Fullstack Software Engineer Internship

About N1:N1 is an innovative blockchain network that is hyper-performant and horizontally scalable. Our mission is to facilitate trustless computing at the scale of the internet, revolutionizing the way digital interactions occur.Our talented team comprises individuals with diverse backgrounds from prestigious institutions such as Harvard, Carnegie Mellon University, DFINITY, VMWare, and Galaxy Digital. We are proud to be supported by leading investment firms like Founders Fund, Kraken Ventures, SALT, and Amber Group.Position Overview:We are excited to invite a Full-Stack Software Engineer Intern to join our dynamic engineering team. This full-time role will involve the development of robust front-end, server-side, and database applications, with a primary focus on blockchain technology. Ideal candidates should be detail-oriented, innovative, and possess a strong product mindset. You will take ownership of enhancing our web platforms and internal tools, ensuring they are user-friendly, secure, and high-performing.

About ClarionAt Clarion, we're transforming communication in healthcare through cutting-edge AI technology.Currently, clinics are missing 30–40% of patient calls, while their staff faces overwhelming administrative burdens. We envision a future where AI agents manage workflows like scheduling, billing, prescription refills, and follow-ups, allowing healthcare teams to prioritize patient care.We are developing the essential communication framework that modern healthcare demands. Our AI agents not only respond to calls—they complete entire workflows, ensuring that patients are always heard. To date, we've facilitated hundreds of thousands of patient interactions across various virtual care providers, healthcare systems, and a $5B health insurance company.Founded by a physician with training from Stanford and Harvard (part of the founding team at Two Chairs and Ophelia) and an ex-Amazon Alexa engineer who led AI/ML initiatives at Salesforce, we have secured $5.4M in funding from notable investors including Accel, Y Combinator, Sequoia (Scout), and prominent healthcare entrepreneurs. Our team operates in-person in New York, moving swiftly to tackle one of healthcare's most pressing challenges.Why This Role Is UniqueOwnership of high-impact projects: You'll be responsible for significant features and systems that are actively used in real healthcare settings.Early traction and strong signal: With numerous paying customers and increasing revenue, you'll have the opportunity to influence critical product decisions.Learn from industry leaders: Collaborate closely with founders and experienced engineers who work at the nexus of healthcare, AI, and real-time systems.Your ResponsibilitiesDevelop and maintain full-stack features that drive AI-enhanced healthcare communication.Integrate with EHRs, legacy healthcare systems, and real-time voice infrastructure.Work collaboratively with product, design, and senior engineers to turn customer feedback into deliverable software.Enhance reliability, performance, and scalability across active systems.Engage in technical discussions, code reviews, and contribute to the evolution of engineering best practices.Technical Challenges Awaiting YouAI-driven workflows: Support and expand LLM-based systems utilized in real-time healthcare interactions.Real-time systems: Contribute to low-latency services that provide seamless healthcare experiences.

About GreenboardAt Greenboard, we are pioneering the future of financial compliance. Our unified, AI-driven compliance operating system serves registered investment advisors (RIAs), fintechs, private funds, hedge funds, and beyond, replacing the disjointed array of legacy tools and automating processes beyond previous capabilities. By centralizing data and streamlining workflows, Greenboard empowers firms to mitigate regulatory risks, simplify their technology infrastructure, modernize compliance operations, and achieve cost savings.Our founding team consists of engineers who have successfully scaled products at industry giants such as Amazon and Google, as well as at several unicorn startups. Supported by esteemed investors including Y Combinator, General Catalyst, and Base10, we have raised over $20 million to date. Renowned financial institutions already trust Greenboard, and our growth trajectory is rapidly accelerating.About the Role:As a pivotal member of our engineering team, you will tackle complex technical challenges ranging from building AI agents for insider trading detection to scaling messaging archiving systems capable of processing tens of millions of messages daily. You will collaborate with a team of world-class engineers, making a significant impact on our innovative projects.This is a full-time, on-site Fullstack Software Engineer position based in New York City.Who You Are:You thrive in fast-paced environments and love to build innovative solutions.You seek deep ownership of the products you develop.You are passionate about understanding and serving the customers you build for.You possess excellent communication skills.You value teamwork and collaboration.You are based in New York City.Qualifications:3-5 years of industry experience.Proficient in Node.js and Python.Experience architecting secure, scalable systems on AWS.Experience in developing scalable data infrastructure.Knowledge of AI and machine learning algorithms.Ability to work effectively in a fast-paced startup environment.Experience in the financial industry is a plus, but not mandatory.Benefits:401(k) plan with 5% company match.Comprehensive medical, dental, and vision insurance.15 days of paid time off plus 11 company holidays and flexible sick leave.

About ClarionAt Clarion, we are revolutionizing communication in healthcare through the power of AI.Currently, clinics are missing 30–40% of patient calls and their staff is burdened with administrative tasks. We envision a future where AI agents manage these workflows, including scheduling, billing, prescription refills, and follow-ups, allowing healthcare professionals to dedicate more time to patient care.We are developing the essential communication infrastructure that modern healthcare needs. Our AI agents do more than just answer calls—they manage workflows from start to finish, ensuring that every patient is heard. To date, we have successfully handled hundreds of thousands of patient interactions across virtual care companies, health systems, and a $5 billion health insurance provider.Founded by a physician trained at Stanford and Harvard, alongside a former Amazon Alexa engineer who led AI/ML teams at Salesforce, Clarion has raised $5.4 million from prominent investors including Accel, Y Combinator, and Sequoia. Our in-person team in New York is rapidly advancing to tackle one of the most pressing challenges in healthcare.

Role Overview Sigma Computing is growing its engineering team in New York City. The Senior Fullstack Software Engineer will help shape how users explore and interact with data. This role focuses on building technology that makes data more accessible and intuitive for a broad audience. What You Will Do Work on complex problems to create interactive experiences for data warehouse users, making analysis and exploration easier. Use modern programming languages and tools, including Rust, Go, GraphQL, and Kubernetes, throughout the development process. Build infrastructure to support Sigma Computing's cloud application. Develop algorithms and techniques that improve performance and interactivity in a multi-tenant cloud environment. Design and implement new features and technologies for a rapidly expanding user base. Collaborate across backend, frontend, design, product, customer support, sales, and marketing teams to deliver a strong product.

About Sei LabsAt Sei Labs, we are pioneers in developing open-source technology for the high-performance Sei Blockchain, the first EVM Layer 1 blockchain designed for parallelization and industry-scale performance. Our unique optimizations enable Web3 applications to achieve Web2 levels of scalability and efficiency, fostering the widespread adoption of digital assets.Our talented teams are composed of industry veterans from leading companies like Google, Goldman Sachs, Robinhood, Nvidia, and Databricks, all dedicated to onboarding the next billion users into a thriving ecosystem of applications.Having raised over $30 million from prestigious investors such as Jump Crypto, Multicoin Capital, Coinbase Ventures, Distributed Global, Hudson River Trading, and Flow Traders, we are positioned for significant growth.Discover more about us on our website and explore our documentation.About the RoleSei Labs is on the lookout for a Fullstack Software Engineer to help redefine the future of Web3 by enabling innovative, impactful applications across the Sei Blockchain. In this role, you will collaborate with a team at the leading edge of blockchain technology, working closely with our ecosystem partners to develop state-of-the-art decentralized applications (dApps) that span various Web3 domains—from decentralized exchanges (DEXs) and gaming to decentralized physical infrastructure networks (DePin), artificial intelligence, and more. If you thrive in a fast-paced, community-oriented environment and are passionate about continuous learning and rapid development, this is an exceptional opportunity to expand the frontiers of decentralized technology.

Join Flex, a rapidly growing FinTech company headquartered in New York City, as we revolutionize the rent payment process. It's 2026, and we believe that paying rent should be affordable, flexible, and hassle-free. Our mission is to empower renters with the ability to pay their rent on a schedule that aligns with their financial needs. After establishing a strong foundation of investor support and a dedicated user base, we are seeking passionate individuals to join our team and help us drive our mission forward.As a Senior Fullstack Software Engineer, you will play a crucial role in propelling our company’s growth. Your expertise will be vital in developing and scaling our platform and application experiences, ultimately facilitating our ambitious goal of achieving 10x growth.

Join WRITER: The Future of AI-Powered WorkAt WRITER, we're revolutionizing the workplace with our cutting-edge AI solutions. Our mission is to augment human capabilities through superintelligence, enabling seamless collaboration between IT and business teams to drive transformative outcomes. Our comprehensive platform empowers renowned organizations such as Mars, Marriott, Uber, and Vanguard to create and deploy AI agents powered by WRITER's enterprise-grade LLMs. With a valuation of $1.9B and support from top-tier investors like Premji Invest, Radical Ventures, and ICONIQ Growth, WRITER is solidifying its status as a frontrunner in the enterprise generative AI landscape.Founded in 2020, we have established offices in San Francisco, New York City, Austin, Chicago, and London. Our dynamic team is fueled by a passion for innovation, and we are eager to welcome talented builders and thinkers to help shape the future of work with AI. Position OverviewWe are looking for a talented fullstack Software Engineer to join our engineering team, focusing on the development of sophisticated AI-driven agent systems. These systems will autonomously execute workflows and manage complex tasks, significantly enhancing productivity across enterprise applications. As a key contributor, you will design, develop, and scale next-generation AI agents that integrate seamlessly with enterprise data and services to address real-world challenges. Collaboration with cross-functional teams will be essential in transforming intricate agent concepts into fully operational systems.‍ Key ResponsibilitiesArchitect, implement, and sustain scalable, secure agent-driven services and systems leveraging modern AI frameworks.Build and enhance robust infrastructure and high-throughput APIs, concentrating on critical agent capabilities such as memory management, communication protocols, skills, intelligent decision-making, security, and workflow oversight.Integrate agent functionalities with backend services, data repositories, vector databases, search/retrieval systems, and third-party APIs.Work closely with product managers, AI researchers, data engineers, and UX teams to convert high-level agent use cases into resilient, production-ready software.Ensure the reliability, monitoring, and observability of all agent components, including metrics, logging, CI/CD processes, and fault tolerance.Participate in architectural design discussions and conduct thorough code reviews to maintain high-quality standards.

About SomethingsAt Somethings, we are pioneering a revolutionary social wellness platform specifically designed for teens. Our mission is to create a supportive environment where young individuals can build meaningful relationships with mentors who truly understand them, are dedicated to their growth, and provide the guidance necessary for them to flourish.In the U.S., 25 million teens face mental health challenges, and each of the countless teens who engage with Somethings requires assistance. Our goal is to ensure that these individuals do not merely use the platform, but instead connect with compassionate humans who are devoted to their well-being and help them thrive.With backing from General Catalyst and esteemed healthcare and consumer investors, we are experiencing rapid growth — achieving a remarkable 1100% increase in 2025 and aiming for a fivefold growth in 2026.If you aspire to contribute to a transformative company within the mental health sector, we welcome you to join us.Role OverviewWe are seeking a Senior Fullstack Software Engineer specializing in React to join our dynamic, high-impact engineering team. You will play a pivotal role in constructing the foundational web experiences that empower our mentors and operational teams.This position offers high levels of agency, craftsmanship, and impact:You will directly influence the platform experiences that assist teens in connecting and genuinely improving their lives.What You'll DoIn this role, you will take complete ownership of essential projects that align with our strategic objectives for 2026:1. Transform our Mentor Operations Platform into a world-class experienceDeliver web experiences that are fast, reliable, and deeply human-centric.Evolve the mentor web experience from basic functionality to a cohesive, elegant, and leading-edge platform.Create user interfaces that are as intuitive and refined as the best consumer applications.Prioritize performance, accessibility, and interaction quality.2. Develop tools that safely scale our mentor operationsDesign features for mentors that enhance consistency, speed, and connection.Implement safety measures that proactively identify risks and minimize human error.Refine mentor workflows to empower users rather than overwhelm them.3. Take charge of full-stack product developmentBuild comprehensive features across React, backend services, and APIs.Engage in close collaboration with design, product, growth, and clinical operations teams.

About MosaicMosaic is an innovative, AI-driven deal modeling platform tailored for private markets, utilized by top-tier investors and advisors such as Warburg Pincus, CVC, New Mountain, and Evercore. Our platform automates and standardizes essential deal analyses—including LBOs and DCFs—enabling investment teams to accelerate their processes, minimize spreadsheet errors, and focus on strategic investment decisions.At Mosaic, we merge deterministic, rules-based calculations with advanced AI capabilities to produce replicable, audit-ready outputs, trusted by private equity, private credit, and investment banking teams across multi-million dollar transactions.We are dedicated to creating the AI-driven operating system for the world’s most sophisticated investors and their advisors. As we rapidly expand, we are seeking talented professionals across engineering, product, customer enablement, and go-to-market teams.This is an exceptional opportunity for those eager to influence the convergence of high finance and technology, shaping the future of the industry for years to come.Learn more about our journey:BloombergFinancial TimesNY PostAbout the RoleAs a Fullstack Engineer at Mosaic, you will create product experiences essential for investors and bankers engaged in high-stakes deal processes. Your responsibilities will span the entire technology stack—from developing sleek, user-friendly interfaces to building robust backend services that facilitate modeling, data ingestion, collaboration, and workflow automation.This position is designed for builders who crave real ownership. You will contribute to feature development from inception to deployment, closely collaborating with product and design teams, while helping to lay the technical groundwork for a platform relied upon in mission-critical situations. You will face challenging tasks such as structured financial computations, document ingestion, compliance, permissions management, real-time collaboration, and performance optimization at scale.

About WRITERWRITER is the premier platform where top global enterprises harness the power of AI to transform work. Our mission is to amplify human abilities through cutting-edge superintelligence. We are demonstrating this capability by providing powerful, dependable AI solutions that bridge IT and business teams, driving enterprise-wide transformation. With WRITER's comprehensive platform, companies like Mars, Marriott, Uber, and Vanguard are developing AI agents that leverage their own data, empowered by WRITER's robust enterprise-grade large language models (LLMs). Currently valued at $1.9 billion and supported by leading investors such as Premji Invest, Radical Ventures, and ICONIQ Growth, WRITER is swiftly establishing itself as a frontrunner in the field of enterprise generative AI.Established in 2020, with hubs in San Francisco, New York City, Austin, Chicago, and London, our team is driven by ambitious goals and a rapid pace. We invite innovative and dedicated individuals to join us on our mission to redefine the future of work through AI. About the RoleWe are on the lookout for a talented fullstack Software Engineer to enhance our engineering team in creating advanced AI-driven agent systems capable of executing autonomous workflows and orchestrating multi-step tasks. In this position, you will be instrumental in designing, developing, and scaling next-generation AI agents that seamlessly integrate with enterprise data and services to address real-world challenges. Collaborating with cross-functional teams, you will convert complex agent concepts into production-ready software solutions.‍ What You'll DoDesign, implement, and maintain scalable and secure agent-driven services and systems that autonomously accomplish tasks using cutting-edge AI frameworks.Enhance and develop robust infrastructure and high-throughput APIs, emphasizing core agent functionalities like memory, communication channels, skills, intelligent decision logic, security, and workflow management.Integrate agent capabilities with backend services, data stores, vector databases, search/retrieval systems, and external APIs.Work closely with product managers, AI researchers, data engineers, and UX teams to translate high-level agent use cases into effective, production-ready software.Ensure the reliability, monitoring, and observability of all agent components (metrics, logging, CI/CD, fault tolerance).Participate in architectural design decisions and conduct thorough code reviews to maintain high standards of quality.

Role Overview Sigma Computing builds a high-performance platform that integrates with modern data architectures. As the team grows in New York City, the company seeks a Senior Fullstack Software Engineer who enjoys solving complex technical problems and shaping features that make data accessible for a wide range of users. The engineering group values collaboration and a shared mission to improve how organizations use data. What You Will Do Work on challenging problems to deliver an interactive, high-performance analytics experience on top of modern data warehouses. Develop software using tools and languages such as Rust, Go, GraphQL, TypeScript, and Slate. Create new algorithms and techniques to improve performance and interactivity for analytics and workflow solutions, supporting some of the largest enterprises. Diagnose and resolve product or system issues by analyzing, tracking, and debugging problems. Design and implement new features to meet the needs of a growing user base. Collaborate with teams across infrastructure, design, product management, customer support, sales, and marketing to build new product capabilities.

Join Brigit, a pioneering company dedicated to enhancing the financial well-being of everyday Americans. We design transparent, equitable, and user-friendly financial products, empowering our members to manage their finances effectively, avoid unnecessary fees, and rapidly improve their credit scores. If you value autonomy, ownership, and the opportunity to make a meaningful impact within a thriving organization, we invite you to become part of our dynamic team!At Brigit, we are making waves in the financial sector, and our achievements have not gone unnoticed:Built In's 2026 Best Midsize Companies to Work For in New York CityBuilt In's 2025 Best Places to Work For In New York CityBuilt In’s 2024 & 2025 Best Startups to Work For In the U.S.Built In’s 2023 - 2025 Best Startups to Work For In New York CityFast Company’s Most Innovative Companies of 2022Business Insider’s Most Promising Consumer Startups 2022Forbes Fintech 50 2022Position Overview:We are seeking experienced fullstack engineers to join our mission of scaling our innovative consumer finance platform to millions of users within the next year. With our success in supporting low-income Americans in achieving financial stability, now is the time to expand our reach. Our technology stack includes React and React Native for our mobile and web applications, and we are looking for individuals who are passionate about building impactful solutions.

Join a Transformative CompanyPalantir is at the forefront of creating powerful software designed to enhance data-driven decision-making across various sectors. Our innovative platforms enable partners to tackle critical challenges, from developing life-saving medications and predicting supply chain disruptions to safeguarding missing children and beyond.The OpportunityAs a Forward Deployed Software Engineer Intern (FDSE), you will engage directly with clients to gain a deep understanding of their most pressing challenges, crafting and deploying data-driven solutions. Our clients depend on Palantir’s platforms to manage pivotal operations, often beginning with complex inquiries such as, "How can we assess wildfire risks and optimize our power grid accordingly?" or "What strategies can we implement to ensure our food supply chain is responsive enough to deliver timely humanitarian aid?" In this role, you will leverage your analytical, creative, and technical skills to help organizations translate data into meaningful impact. This internship provides an exceptional opportunity to gain insights and contribute to some of the world's most critical industries and institutions.This internship is hosted in our New York City office and is available for students and recent graduates from Polish universities.Key ResponsibilitiesAs an FDSE Intern, you will have responsibilities akin to those in a startup environment, but with the resources, stability, and guidance of an established tech company. You will collaborate in small teams with minimal oversight, taking ownership of high-impact projects from inception to completion. Your tasks may involve architectural discussions with engineers, processing large datasets, developing custom web applications, engaging with customer executives, or strategizing with your team.FDSE interns are treated as full-time engineers, enjoying significant autonomy and responsibility for real-world projects that have tangible outcomes our clients depend on.

P-1980At Databricks, we are dedicated to empowering data teams to address some of the most challenging problems in the world—from revolutionizing transportation to accelerating medical advancements. Our mission is realized through the development and operation of the premier Data Intelligence Platform, enabling our customers to extract deep insights from data to enhance their business strategies. Founded by engineers with a strong customer focus, we eagerly embrace every opportunity to tackle technical challenges, whether it’s designing cutting-edge UI/UX for data interaction or scaling our services and infrastructure across millions of virtual machines. And we’re just getting started.As a founding engineer in our New York City Engineering office, you will join a dynamic, agile team committed to innovating and creating new products from the ground up. Our aim is to harness the capabilities of Databricks in data and AI to deliver specialized AI applications catering to both technical and business users. This role offers a unique 0-to-1 environment, merging the excitement of a startup with the robust resources of a leading tech company.Your primary challenge will be to utilize the latest UX/UI technologies to develop intuitive yet powerful interfaces for complex data and workflows. Your team will adopt a UI-first and GenAI-first strategy in product development. Potential challenges might include:Creating interfaces for GenAI agents that produce intricate workflows while ensuring human oversight through transparency and inspectability.Developing advanced visualizations, such as data pipelines, data mappings, customer journey flows, and identity graphs.Implementing features that promote product-led growth via seamless onboarding and sharing capabilities.Facilitating an interactive environment for collaborative data projects at scale, with a straightforward path to production.

Join a Revolutionary CompanyAt Palantir, we develop the world's foremost software for making data-driven decisions and enhancing operations. Our innovative platforms connect critical data with the individuals who need it, enabling our partners to create life-saving medications, predict supply chain challenges, locate missing persons, and much more.About the PositionPalantir has established itself as a premier destination for the top engineering talents from the Grandes Écoles. We are thrilled to introduce a 12-month fellowship program in New York City, tailored for students and recent graduates of the Grandes Écoles. Selected fellows will collaborate with full-time Palantir employees and will benefit from a specialized program designed to foster skill development and critical thinking. The fellowship is set to commence in October 2026. Candidates may seize this opportunity during their gap year, as a third-year internship, or within a year after graduation.As a Forward Deployed Software Engineer (FDSE), you will engage directly with clients to gain a deep understanding of their most pressing challenges, designing and implementing data-driven solutions. Our partners depend on Palantir’s platforms for their most vital operations. Projects often begin with exploratory questions such as, "How can we assess wildfire risks and enhance power grid efficiency?" or "What strategies can we employ to ensure timely delivery of life-saving assistance through our food supply chain?" In this role, you will leverage your analytical skills, creativity, and technical expertise to help organizations harness their data for genuine global impact. You will have the chance to gain unparalleled insights and contribute to some of the world's most significant industries and institutions.This internship is based in our New York City office and is exclusively available to students and recent graduates of the French Grandes Écoles.Key ResponsibilitiesAs an FDSE Intern, your responsibilities will mirror those of a small startup, enriched by the resources, stability, and mentorship of an established tech company. You will collaborate in small teams with significant autonomy, overseeing the entire execution of high-stakes projects. Your daily tasks may include discussing architectural designs with fellow engineers, managing large-scale data, developing custom web applications, engaging with client executives, or formulating team strategies.FDSE Interns are regarded as integral members of our engineering team, enjoying substantial freedom and accountability in their projects. You will take ownership of tangible outcomes that our customers rely on.

At Atrix, we believe that breakthrough medicines begin with extensive research, vast amounts of data, and critical decisions made by leading medical teams within the foremost biopharma laboratories. These pivotal decisions dictate which treatments become available, how they are promoted to healthcare providers, and ultimately, when patients gain access to life-saving therapies.We stand at a transformative juncture. The rise of AI-driven drug discovery, precision medicine, and a surge of real-world evidence have broadened the horizons of what is achievable. Yet, the teams dedicated to translating scientific advancements into patient access are overwhelmed by unmanageable data.Our tools must evolve to meet the urgency of the moment. Atrix is pioneering AI solutions tailored for life sciences, ensuring the precision and rigor that biopharma demands.Currently collaborating with top-tier pharmaceutical companies, we are rapidly scaling our efforts, all with the singular goal of ensuring that the right treatments reach the right patients sooner.Role OverviewAs a founding member of our engineering team, you will play a crucial role in developing the Atrix AI-native platform. You will design and implement features that simplify intricate healthcare and AI workflows, crafting intuitive and user-friendly interfaces trusted by scientific, medical, and commercial teams across leading pharmaceutical organizations.From creating thoughtful front-end user experiences to building resilient backend systems, you will connect our AI core with tangible customer challenges, addressing issues that significantly enhance patient care.We are in the process of constructing a modular, intelligent platform that integrates with customer-approved data sources, transforms chaotic and unstructured data through cutting-edge AI, and delivers structured, actionable insights that facilitate decision-making in regulated environments.Your contributions will be actively utilized by medical, clinical, and commercial teams making critical decisions every day.You will encounter complex engineering challenges in the following areas:Performance — Handling extensive datasets simultaneously.Security & Privacy — Managing sensitive customer data with utmost trust.Explainability — Ensuring AI outputs are verifiable and traceable.Composable UI/UX — Designing adaptable interfaces for diverse applications, from chat interfaces to dashboards and spreadsheets.Join us in revolutionizing patient access and driving meaningful change in healthcare.

Who We AreLightning AI is the innovative force behind PyTorch Lightning. Established in 2019, we provide a comprehensive platform for the development, training, and deployment of AI systems, enabling seamless transitions from research to production.Following our merger with Voltage Park, a neocloud and AI Factory, we have combined developer-centric software with efficient, large-scale computing solutions. Our tools empower teams to experiment, train, and deploy with built-in security, observability, and control.We cater to solo researchers, startups, and established enterprises worldwide, with offices located in New York City, San Francisco, Seattle, and London. We are proud to be backed by industry leaders like Coatue, Index Ventures, Bain Capital Ventures, and Firstminute.Our ValuesMove Fast: We act swiftly and accurately, breaking down complex challenges into manageable steps.Focus: We tackle one goal at a time, working collaboratively to deliver high-quality features.Balance: We believe sustained performance stems from rest and recovery, promoting a healthy work-life balance.Craftsmanship: We strive for excellence and take pride in perfecting our craft, ensuring every detail matters.Minimal: We champion simplicity in our innovations, discarding complexities to focus on what truly matters.What We’re Looking ForWe are seeking a Fullstack Engineer to contribute to the development and scaling of the Lightning AI platform, encompassing frontend, CLI, API, billing, security, and integrations.The ideal candidate will take ownership of crucial features, driving development from conception to completion while collaborating with an exceptional team of engineers, product managers, and designers. You will transition from proofs of concept to final releases, with a strong emphasis on speed, quality, and iterative improvement.This is a chance to create groundbreaking technology that will revolutionize the machine-learning landscape!This hybrid role requires in-office attendance two days a week at our New York City office, with a competitive salary range of $120,000 to $250,000.

At Fortify, we are revolutionizing the way students finance their education.We seek a passionate Fullstack Engineer who is enthusiastic about fintech, capital markets, and innovative products to join our mission in making education more accessible.About Us:Fortify is dedicated to empowering students by providing them with affordable options to finance their education and supporting them post-graduation.In the wake of COVID-19, access to credit has diminished, leaving students from various educational backgrounds—ranging from trade schools to prestigious universities—seeking financial assistance. Fortify is here to assist educational institutions in managing these financing programs more effectively, encompassing everything from financial aid and scholarships to payment plans and institutional loans. Our goal is to simplify student financing while also equipping our students for success beyond graduation.We are building solutions for those who possess the ambition and determination to pursue their education but lack the necessary resources.Supported by Pear VC, Fortify is a well-funded, agile organization.Join our small yet highly skilled team in fintech and lending, led by co-founders with a proven track record of launching successful venture-backed companies, including pivotal roles at SoFi.About This Role:As a Fullstack Engineer, you will be instrumental in developing Fortify's core financing platform.You will enjoy significant autonomy over new product initiatives and play a key role in major launches.Working within a compact team, you will have ample opportunities to lead design and product development if desired.Your contributions will directly support our mission of enhancing educational access and fostering economic mobility.Potential Projects:Taking charge of the architecture and launch of new products, such as a financial aid tool that simplifies the application process for federal (FAFSA) and state aid.Enhancing our online financing application to facilitate smoother access to loans, scholarships, or aid for students.Creating resources aimed at promoting financial literacy among students and assisting them in securing job opportunities post-graduation.Preferred Qualifications:Demonstrated significant ownership of production code at a tech startup.Experience with full-stack development in a collaborative environment.Passion for fintech and a commitment to advancing educational access.

Join us as a Founding Software Engineer with extensive full-stack development expertise to shape the future of our innovative AI platform tailored for market due diligence. You will take full ownership of developing features from the ground up—spanning AI-driven backend systems to sleek frontend interfaces utilized by investment professionals in Private Equity, Hedge Funds, Private Credit, and Corporate M&A to guide billion-dollar decisions.About DiligenceSquaredDiligenceSquared revolutionizes commercial due diligence for Private Equity funds. Backed by Y Combinator, we recently secured a substantial Seed round, and our clientele includes some of the largest PE funds globally.The market is valued at over $10 billion annually, with PE funds investing $500,000 to $1 million per report with firms like McKinsey, BCG, and Bain. Our AI solutions provide these services faster, more cost-effectively, and with superior accuracy compared to traditional methods.Our founders have firsthand experience in this domain, having traded these reports while holding senior positions at Blackstone and BCG. We possess profound insights into the workflows and are now focused on automating these processes.Your Responsibilities:Develop new product features and user experiences end-to-end, from database schemas to API endpoints, and integrate them with UI components for our web application and AI Voice Agent.Design and build AI-powered modules from scratch (e.g., market sizing, competitive analysis) that will be integral to our research platform.Establish and manage product foundations across the stack, including AI agent orchestration, voice AI pipelines, interactive data visualizations, application and API performance, and intelligent automations.Incorporate lessons learned from every project into the product development, ensuring continuous incremental improvements (the Law of Compounding is critical, especially for a company founded by investment experts).Qualifications:Minimum of 3 years of professional full-stack development experience.Strong command of React/TypeScript and Python.Experience in developing intelligent systems using LLM platforms (e.g., Anthropic, OpenAI).Extensive hands-on experience with LLMs in production, focusing on building reliable intelligent systems.Proficient with PostgreSQL and SQL database architecture.Familiarity with modern frontend architecture, state management, and API design.