Lead Software Engineer - Full Stack Development

Join Alloy and Shape the Future! At Alloy, we tackle the identity risk challenges faced by companies offering financial products, allowing them to combat fraud effectively and serve a broader audience worldwide. Over 800 leading financial institutions and fintech companies trust Alloy to manage fraud, credit, and compliance risks while gaining a comprehensive understanding of their customers. Guided by our core values of Boldness, Resourcefulness, Collaboration, and Diversity, we foster a vibrant workplace where you can grow, succeed, and feel a sense of belonging. Discover why we have consistently been recognized as one of Inc. Magazine’s Best Workplaces, Forbes America’s Best Startup Employers, and Best Fintech to Work for by American Banker year after year. Learn more about our investors and what we do here.

About UsSapien is revolutionizing the operational dynamics of finance teams in the AI era. Our vision is to create an autonomous CFO—a comprehensive system managing company financials seamlessly. Our platform provides real-time analytics of intricate financial data, enhancing decision-making speed, mitigating costly errors, and delivering substantial value. We have successfully identified multi-million-dollar discrepancies, preserved thousands of jobs, and significantly boosted our clients' profitability.Partnering with diverse industries—manufacturing, healthcare, dining, and large corporations—we strive to thoroughly grasp and automate their financial workflows. Based in Madison Square Park, NYC, we have garnered support from General Catalyst, Neo, and leading professionals from Google, OpenAI, Microsoft, Ramp, and Stripe, raising over $9M.Position OverviewAs a Full-Stack Engineer, you will develop features from inception to deployment for Sapien's core platform. This encompasses transforming designs into frontend implementations, crafting backend APIs, modifying databases, and integrating agents. You will take ownership of the entire user experience, ensuring functionality and performance.In this role, you will strike a balance between launching innovative features and maintaining platform stability and performance. Engaging directly with clients, you will observe how they utilize your developments and refine them based on genuine feedback.Key ResponsibilitiesDevelop features that position Sapien as an essential tool for finance teams, crafting experiences that engage users daily by proactively delivering insights and addressing potential issues before they escalate.Create intuitive interfaces that simplify complex operations for finance professionals lacking technical expertise.Establish human-in-the-loop systems allowing users to provide feedback, rectify mistakes, and educate the system on specific business processes, enhancing agent intelligence over time.Make pivotal product and technical choices: determine feature functionalities, UI design, database architecture, and appropriate technologies. You will not merely implement specifications; you will conceptualize what to build.QualificationsProficient in modern web technologies such as React, TypeScript, Python, SQL, and common backend frameworks. While you don’t need to be an expert in all areas, you should be capable of navigating the entire stack.A product-oriented mindset, prioritizing user experience in your development approach.

Join Antimetal as a Full-Stack Product Engineer, where you'll be at the forefront of crafting our core product driven by innovative AI technology. Your role will involve designing robust APIs, orchestrating system layers, and implementing essential business logic while creating seamless and user-friendly interfaces.We seek a proactive individual who thrives in tackling ambiguous challenges, managing projects from inception to completion, and effectively translating user feedback into actionable product enhancements.About AntimetalAntimetal is revolutionizing infrastructure management. Our mission is to create a platform that not only identifies and resolves issues but also anticipates them, allowing engineers to reclaim their time for what they excel at: developing exceptional products.Your Responsibilities:Develop AI-driven tools and productsDesign and implement new features across the technology stack, from backend data models to React-based frontendsEngage with users to gather insights and shape product developmentCollaborate with design teams to enhance frontend experiences and establish interaction standardsLead projects through uncertainty, breaking them into manageable milestones and ensuring timely deliveryWork closely with customers to refine features and validate the product trajectoryYour Qualifications:5+ years of experience in professional software engineering within full-stack rolesProven track record of owning projects from start to finish in a startup environmentStrong proficiency in Typescript, React, Postgres, and NestJSDemonstrated ability in product design, crafting features that resonate with usersCapability to lead initiatives through ambiguity and drive alignment across cross-functional teamsPreferred Qualifications:Experience with AI-native product developmentBackground in development tools, infrastructure, or observabilityFamiliarity with cloud infrastructure (AWS, Docker, Kubernetes, Terraform)Experience in direct customer engagement to shape product offeringsPrevious exposure to shaping product direction based on user interactions

Join a pioneering AI engineering team in New York City, dedicated to creating and scaling innovative AI-driven products that will revolutionize user experiences for millions. Our workspace is akin to a state-of-the-art AI laboratory, merging groundbreaking innovation with the extensive reach of our diverse ecosystem. The team comprises exceptionally skilled AI engineers, full-stack developers, product managers, and designers all committed to expanding the possibilities of AI technology.General InformationWe are on the lookout for extraordinary engineers who have successfully deployed AI features that are actively utilized in production environments. The ideal candidate should possess full-stack capabilities, flourish in dynamic and collaborative settings, and have a fervent passion for crafting seamless user experiences powered by AI.Key ResponsibilitiesDesign, develop, and launch user-centric AI features across various products, including content creation tools, e-commerce recommendations, and messaging platforms.Quickly prototype and refine AI-driven solutions, transforming them into robust production-ready systems.Work in close collaboration with product managers, designers, and fellow engineers to conceptualize, implement, and scale innovative features.Remain informed about advancements in AI technology and utilize them to enhance user experiences.Contribute to the technical vision and strategy for the progression of AI products within the ecosystem.RequirementsA proven history of successfully deploying AI features into production with verifiable user engagement.Hands-on experience with large language models (LLMs), either through APIs or custom implementations, at scale.Proficient full-stack development skills in PHP, Python, or JavaScript.Capability to create high-performance AI-enhanced user interfaces.Preferred QualificationsExperience in developing consumer AI products that have grown to serve large user bases.Strong proficiency in PHP.Familiarity with WordPress, e-commerce platforms, or messaging frameworks.Contributions to open-source projects demonstrating technical acumen and innovative thinking.BenefitsBecome part of a meticulously selected team comprising some of the brightest minds in AI and product development.Open to both on-site and remote candidates.Develop products that will have a direct impact on millions of users across a varied ecosystem.Opportunity to be part of an elite AI laboratory with the capability and reach of a global platform.Long-term, full-time role.

About Sailor HealthSailor Health is dedicated to addressing the urgent mental health crisis affecting older adults. In the U.S., seniors are the demographic with the highest suicide rates but often lack adequate mental health services. With projections indicating that by 2030, over 65 million seniors will represent nearly a quarter of the U.S. population, this issue demands immediate attention.We are developing an innovative platform focused on senior mental health, facilitating connections between older adults, therapists, healthcare professionals, and insurance providers. Our AI-driven operating system enhances care coordination, provides real-time clinical insights, and simplifies insurance billing, allowing therapists to dedicate more time to compassionate care.Our rapid growth and partnership with Medicare enable us to deliver exceptional and affordable psychotherapy to hundreds of patients. We are proud to have the support of distinguished founders from Ramp, Nourish, Headway, Charlie Health, and Spring Health.⭐ About the RoleLocation: HQ - New York City - Remote.We are seeking a Founding Full-Stack Engineer who will spearhead the development of our AI-enhanced platform from its architectural design through to launch. You will collaborate closely with our co-founders to establish the systems and AI infrastructure that drive our platform, including tools for therapists and care navigation support.This is a unique opportunity to create and launch an AI-first product from the ground up at a startup that has achieved exceptional product-market fit. You will be responsible for significant technical decisions, influence our engineering culture, and rapidly bring innovative ideas to fruition. If you thrive in a fast-paced environment and seek to make a meaningful impact through your coding, we want to connect with you.

About N1:N1 is a groundbreaking, hyper-efficient, and horizontally scalable blockchain network, crafted to facilitate trustless computing on an internet scale. Our diverse team boasts expertise from prestigious institutions such as Harvard, CMU, DFINITY, VMware, and Galaxy Digital, and is supported by leading investors including Founders Fund, Kraken Ventures, SALT, and Amber Group.Position Overview:We are on the lookout for a dedicated Full Stack Software Engineer to become a vital part of our engineering team. This full-time role encompasses the development of front-end, back-end, and database applications, particularly focused on innovative blockchain products. The ideal candidate will be highly organized, service-oriented, resourceful, 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 optimized for high performance.

Join Our Team at TennrAt Tennr, we revolutionize the referral process in healthcare. When a patient is referred to a specialist, the journey can often be fraught with delays and confusion. We bridge this gap by ensuring every referral reaches the right specialist with the necessary information promptly, empowering healthcare providers to enhance their efficiency and service delivery.Your RoleWe are seeking a dynamic Full Stack Product Engineer who thrives on transforming innovative ideas into practical solutions that address real customer challenges. You will be responsible for designing and implementing features that span frontend and backend systems, thereby delivering substantial value to our clients. This includes creating database schemas, developing backend APIs, and designing user-friendly interfaces that healthcare professionals adore.In collaboration with product and design teams, you will gain insights into user interactions with our platform and translate these into strategic product enhancements. Additionally, you'll partner with sales and customer success teams to integrate valuable customer feedback into our product offerings. You will engage with cutting-edge artificial intelligence techniques, positioning yourself at the forefront of technological advancements in the healthcare space.Ideal candidates will possess a founder’s mindset, excel in fast-paced, ambiguous environments, and take ownership of the entire lifecycle of features—from ideation through implementation to continuous improvement. You will spearhead performance optimization initiatives, ensuring code quality, scalability, and adherence to best practices as we expand.This position is ideal for a versatile engineer eager to work across the software stack and passionate about creating impactful user experiences that shape the future of healthcare.

About the RoleJoin april as a Senior Full-Stack Engineer, where your innovative mindset and data passion will contribute to revolutionizing tax solutions for millions. We're seeking a talented individual ready to lead projects, enhance customer experiences, and drive professional growth. Based in the New York City metropolitan area? You'll need to collaborate on-site at least three days a week.Key ResponsibilitiesTake ownership of end-to-end projects that impact millions of users, from concept to deployment.Collaborate with product management and UX teams to define product specifications and ensure seamless execution.Architect robust system designs and evaluate tool selections to optimize performance.Develop cloud-native microservices that enhance our platform's functionality.Mentor team members and elevate our technology stack and practices.

Role overview Rowspace seeks a Full Stack Product Engineer in New York City to help shape and build its platform. This position spans the full product lifecycle, from early development through launch. Projects include building data pipelines that transform long investment memos into searchable formats, designing interfaces for analysts to trace AI-generated answers back to original sources, and deploying custom agent workflows based on real customer feedback. What you will do Design and implement user interfaces that fit smoothly into investors' daily routines. Develop APIs to integrate Rowspace with chat platforms, custom workflows, and external tools such as ChatGPT, Claude, and Excel. Build ingestion pipelines that organize unstructured data like PDFs, emails, and spreadsheets into a unified knowledge system. Work directly with customers to understand needs and deliver solutions quickly. Maintain high standards for security, privacy, and reliability when handling sensitive investment data. Create evaluation sets to test and validate the reliability of LLM systems. Requirements Experience delivering full-stack products using tools such as React/Typescript and Python or Node (or similar stacks). Enjoy designing scalable data models and APIs, and take pride in refining schemas. Motivated to bring AI into production, focused on building reliable products that deliver value to customers. Background in finance or fintech is helpful, but curiosity about investor workflows is essential. Committed to engineering quality, improving workflows, sharing knowledge, and maintaining high standards. Interested in joining early, as one of the first 20 engineers at a Series-A startup, with real ownership and impact. Benefits Comprehensive medical, dental, and vision insurance. 401(k) plan with employer matching while employed at Rowspace. Unlimited Paid Time Off (PTO) policy.

About Standard BotsAt Standard Bots, we aim to democratize real-world automation, merging the digital and physical realms to enhance productivity across diverse industries. Our innovative applications and APIs empower individuals and developers alike to tackle challenges without needing extensive backgrounds in robotics or automation. With a strong emphasis on user-friendliness, we bring transformative potential to new users and sectors.Your Role:We are seeking experienced technical leaders to help shape the future of robotics using modern software engineering methodologies. As a Senior Full-Stack Software Engineer, you will collaborate with fellow engineers, leadership, and users to enhance products that significantly impact our users and unlock new opportunities for them. Location and BenefitsThis position is hybrid, requiring 3 days a week onsite at our NYC office, conveniently situated near Grand Central Station. Our office is equipped with robots for demonstrations and testing!Key Responsibilities:Identify, scope, and lead impactful technical and user-facing projects.Provide strategic technical guidance to leadership.Mentor and support fellow engineers in their technical and personal development.Drive technical decision-making through hands-on, in-depth work.Technology Stack:Front-end: React, TypeScriptBack-end: Node.js, Python, C++Containerization: KubernetesVirtualization: DockerCI/CD: GitHub ActionsWho You Are:No prior experience in robotics is required or preferred.We seek engineers who are motivated, optimistic, innovative, and resourceful. While a robotics background is not needed, we find candidates thrive when they are enthusiastic about this domain and eager to apply their skills in a new context.Our ideal candidate will engage in approximately 70% back-end and 30% front-end work, with flexibility to adjust focus as needed.

About UsAt NewForm, we are revolutionizing the marketing landscape by creating innovative tools tailored for the modern advertising era. As the industry shifts towards a content-first approach, traditional audience-focused marketing analytics are becoming less effective. We pride ourselves on being a tech-enabled service, combining our proprietary technology with expert services to deliver measurable outcomes for our clients.Our Advanced ProductsOur AI-driven toolkit features:Framework: A unique statistical engine optimizing creative testing by 30%, enhancing budget efficiency and speeding up the identification of successful content.WillBot: An AI-integrated Slack chatbot designed to keep teams updated on their marketing metrics in real-time.More: Custom solutions for reporting, dashboards, and media buying automation.Our ImpactWe collaborate with forward-thinking brands across various sectors, such as Acorns, Bluechew, Found, Coffee Meets Bagel, RentApp, and Western Union.Our Competitive EdgeWhat differentiates us is our rare blend of extensive marketing knowledge and state-of-the-art AI technology. We apply years of practical marketing experience to create solutions that achieve tangible results, leveraging a robust network of existing client relationships to expedite and enhance our offerings.Your RoleOwnership of Projects: You will manage projects from inception to deployment. We're seeking a candidate who has experience establishing production systems and is not hesitant to construct and launch products from ground zero.You will work independently, closely collaborating with leadership to outline the product roadmap and implement new features. There are no product managers here; you will engage directly with our internal team and clients, developing solutions that truly impact results.Full-Stack Expertise: You should possess strong experience with LLM, Node/Typescript, and React (Next.js), and be open to learning new technologies. Our current stack includes a Typescript backend, Next.js frontend, and LLM API for chat and classifiers. As our product evolves, you will be equipped to address challenges as they arise.

The Role Join Hex Technologies as a talented Software Engineer within our dynamic Growth & Monetization team. This team works on various initiatives, including product-led growth (PLG), user activation, pricing models, billing systems, and innovative product developments. Your contributions will empower a diverse clientele ranging from emerging startups to established Fortune 500 companies, enabling them to maximize the value they derive from Hex. This position is perfect for an engineer who operates with a business mindset and possesses a strong product intuition. Your responsibilities will extend beyond coding; you will focus on optimizing conversion rates, enhancing user experience, aligning business objectives, and transforming user interest into indispensable engagement. Collaborate with Product, Design, Data, and Marketing teams to drive significant business outcomes for Hex. Our PLG strategy is central to Hex’s growth trajectory. Each day, countless data scientists and analysts discover and explore Hex. As a vital part of our team, you’ll play a crucial role in converting that initial interest into long-term engagement and revenue through experimentation, product enhancements, and a steadfast commitment to driving business performance. If you aspire to integrate the precision of engineering with the impact of business leadership, then this is the opportunity for you. This full-time position offers the flexibility of working from our New York, NY or San Francisco, CA locations, or remotely from anywhere within the United States.

About AirgoodsAt Airgoods, we are revolutionizing the food and beverage distribution landscape. Founded in January 2023, we empower emerging brands, such as Fishwife, Ghia, and David Protein, to quickly scale their wholesale operations and secure shelf space in the finest specialty food stores across the nation.Having raised $7 million from prestigious investors including Y Combinator and Initialized Capital, we operate from our vibrant office located near Madison Square Park in New York City. Meet the TeamYou'll collaborate with our co-founders: Paolo, our CTO with a background in Computer Science and Economics from Yale, alongside Elian, our COO who captained the soccer team at Yale, and Aaron, our CEO who has a rich history in retail and venture capital.Join us as we shape the future of the food industry!

The ideal candidate is encouraged to work from any of our offices (Silver Spring, NYC, SF, Miami, Denver) 1-2x weekly.ABOUT ROCKET MONEY At Rocket Money, our mission is to significantly enhance the financial well-being of millions. We provide our members with a profound understanding of their finances along with a range of valuable services designed to save time and money, ultimately empowering them on their financial journey.ABOUT THE TEAM The Core team plays a critical role in enabling all engineering teams at Rocket Money to operate efficiently by ensuring that our foundational systems are reliable and easy to build upon. We are responsible for the evolution of platforms and services that are central to our product and company operations, including:Authentication (registration, login, account access, and user lifecycle workflows)Data Privacy and Trust Systems (handling privacy requests, user deletions, and secure management of sensitive data)AI Enablement (providing shared AI infrastructure and tools that other teams use to create exceptional product experiences)Internal Tooling (developing admin tools, operational systems, and data integrations to enhance the effectiveness of our operations and engineering teams)We prioritize accuracy, resilience, and creating the most straightforward pathways for our teams. If you are passionate about building high-impact systems that others rely on, we would love to hear from you.IN THIS ROLE, YOU'LL:Develop and manage Core services and platforms that underpin essential systems like authentication, data privacy workflows, AI capabilities, and internal tools.Take ownership of projects from inception to completion: defining problems, designing solutions, implementing changes, launching, and ensuring ongoing reliability.Collaborate closely with product engineers, data teams, and operations colleagues to create systems that are safe, scalable, and user-friendly.

Join Verse Medical as a Full Stack Software Engineer where you will engage in the development of cutting-edge software solutions that enhance healthcare delivery. You will collaborate with multidisciplinary teams to design, implement, and maintain innovative applications that support our mission to improve patient outcomes.

About the Role Alpaca Health is looking for a Full Stack Software Engineer based in New York City, NY. This role involves building and maintaining web applications that support better patient care and smoother healthcare operations. What You Will Do Work on both front-end and back-end development for web applications Design, develop, and maintain software with a focus on performance and user experience Collaborate with cross-functional teams to deliver solutions that meet real healthcare needs Team and Impact Join a group committed to improving healthcare technology. Projects at Alpaca Health aim to make a direct impact on patient care and operational efficiency.

Position OverviewJoin our innovative team as a Senior Full Stack Engineer I at DoubleVerify, where you will play a pivotal role in enhancing our full-stack billing system. Your expertise will help our clients leverage DoubleVerify’s extensive suite of products through the development of robust backend services and user-friendly frontend applications. We are a technology-driven organization that thrives on solving complex challenges with cutting-edge solutions. In this collaborative environment, you will liaise with various development, product, and client services teams, focusing on delivering exceptional user experiences.

Join AtrixAt Atrix, we empower medical affairs teams within pharmaceutical companies to navigate the overwhelming sea of unstructured data—from field notes taken by medical science liaisons to insights gleaned from conferences and post-market studies. Our mission is to ensure that valuable insights reach clinicians promptly and effectively, improving patient outcomes.We have built a robust platform that transforms disorganized data into actionable insights, collaborating with leading pharma companies and outperforming larger competitors by prioritizing customer needs and delivering innovative solutions.About UsWe are a dynamic, senior team with backgrounds from industry giants like Google, a16z, Plaid, and Kickstarter. As a seed-stage startup based in New York City, we are dedicated to building and scaling impactful products.Your RoleAs our fourth engineer and first dedicated frontend hire, you'll have a unique opportunity to shape the frontend landscape as we expand. You will develop responsive, server-rendered features using React and Next.js, enhance performance, and collaborate on Python services that power our applications.Your ResponsibilitiesLead the development of our Next.js application (SSR + SSG), with a focus on complex data tables and visual analytics handling large datasets.Make key decisions regarding frontend architecture and establish long-term technical strategies.Develop product analytics strategies and implement the necessary tools.Contribute to backend development using FastAPI as needed.Your Qualifications5+ years of experience with JavaScript/TypeScript, and at least 3 years of production experience with React.Proficiency with Redux Toolkit or a similar state management library.Experience with SCSS or CSS-in-JS, along with a solid understanding of accessibility standards (WCAG).At least 2 years of experience with Python in various contexts (scripts, CLI, data pipelines, etc.).Minimum of 2 years of backend development experience in any language.Preferred QualificationsFamiliarity with React Query or TanStack Query.Experience with virtualized grids or tables.

Role overview Pearl Health is hiring a Senior Full Stack Software Engineer. This role focuses on building and improving web applications that support healthcare technology. The position can be based in Seattle, New York City, Boston, or fully remote. What you will do Develop web applications that are reliable and can scale as usage grows Work with teams across product, design, and engineering to create new features and solutions Contribute to both front-end and back-end codebases, helping projects move from early ideas to launch Find ways to improve user experience within Pearl Health's products Who succeeds in this role Experienced engineers comfortable working across the stack Those who enjoy collaborating with a variety of disciplines People who care about building technology that supports better healthcare outcomes