Full-Stack Product Engineer at Valthos | New York

Valthos Inc. develops software and biological AI systems aimed at protecting humanity. The team includes experts from Palantir, MIT's Broad Institute, and DeepMind, with experience spanning autonomous vehicles, rocket landing, and biological design. Their current work addresses the challenges of nature's mutational complexity for both federal and commercial applications. Role overview Valthos is seeking a full-stack product engineer in New York to help build a new biodefense platform. This role focuses on designing and developing the user-facing layer of the company's biodefense operating system. The engineer will create interfaces that highlight anomalies and deliver insights from biological data, making complex workflows more accessible and efficient. What you will do Design and implement intuitive interfaces for the biodefense platform Develop and maintain full-stack systems that support these user experiences Transform complex biological data and workflows into clear, actionable products Work closely with engineers and scientists to refine and deliver solutions Team and collaboration Work alongside software and biological machine learning engineers with backgrounds at organizations such as Palantir, MIT's Broad Institute, and DeepMind. The team values technical depth, strong product instincts, and a commitment to making computational biology more accessible. Location This position is based in New York.

Full Stack Software EngineerValthos Inc.At Valthos, we harness the power of applied biological intelligence to develop innovative software and biological AI systems aimed at protecting humanity. Our advanced AI architectures, which drive self-driving cars and enable precision landings of rockets, are now being integrated into biological design. To maintain our leading edge, we strive to enhance our toolkit to effectively navigate the complexities of nature's ongoing mutational landscape.Our team consists of dedicated software engineers from renowned organizations like Palantir, as well as biological machine learning engineers from MIT's Broad Institute and DeepMind. Together, we aim to translate cutting-edge computational biology advancements into practical applications for both federal and commercial sectors.We are on the lookout for talented full stack software engineers who will contribute to the design and implementation of platforms that enable Valthos to deliver pioneering methods to our scientific and technical users. Your daily tasks will involve building sophisticated distributed systems, managing scalable container-based infrastructures, developing REST APIs, integrating open-source solutions, and adapting our software to meet user needs. You will work in close collaboration with both technical and non-technical teams to identify challenges faced by our developers and clients, and to create software and infrastructure solutions that address these issues.

Join Allium: Pioneering Blockchain Data SolutionsTaming the Chaos of Blockchain DataAt Allium, we believe that blockchain data should be accessible, clear, and efficient. Since our inception in late 2021, we have recognized the complexities surrounding blockchain data, which, despite being public and free, is often cumbersome to interpret and manage. For example, answering a simple query like “Who are the biggest Ethereum token holders over time?” typically requires substantial engineering effort, including running RPC nodes, ingesting large datasets, and performing extensive data transformations.Overcoming the Challenges of Data AccessThe inherent structure of blockchains has traditionally favored Writes (data entry) over Reads (data retrieval). This design choice was made to enhance transaction throughput and build robust consensus algorithms. Consequently, extracting reliable data at scale has become a significant challenge.The Need for Expertise in Blockchain DataParsing and interpreting blockchain data necessitates both specialized knowledge and advanced data manipulation skills. As noted by Columbia Professor Tim Roughgarden, “Blockchains are (virtual) computers, not databases.” This complexity gives rise to diverse data schemas tailored for specific applications, making standardization crucial yet difficult. Our team is dedicated to transforming intricate technical outputs into comprehensible insights on concepts like tokens, NFTs, stablecoins, and decentralized exchanges (DEXs).Allium: Simplifying Blockchain Data QueriesAllium is committed to streamlining the chaos of blockchain data through our innovative approach to data ingestion, sanitization, and standardization. To date, we have archived data from over 100 blockchains, accumulating petabytes of information and continuously expanding.A Mission to Organize Blockchain DataJust as Google and Bloomberg organized the world’s public financial and web data, Allium is on a mission to do the same for blockchain data. We are at a pivotal moment in history where indexing vast public datasets is essential for industry advancement, and we are proud to support innovators and contribute to the growth of this sector.

About LiveFlowAt LiveFlow, we're revolutionizing the accounting and finance landscape by developing a cutting-edge platform that empowers lean finance teams to efficiently manage expansive enterprises.Having successfully secured over $21 million in funding from prestigious investors such as Y Combinator, YC Continuity, Valar, Seedcamp, WndrCo, Moonfire, and Bradley Horowitz (VP Product, Google), we've positioned ourselves as a frontrunner in the industry.Our platform is already assisting thousands of companies in optimizing their financial operations, evidenced by our hundreds of 5-star ratings on G2.Our founding team boasts experience from Europe's fastest-growing fintech, Revolut, which fuels our ambition and innovation. Why Join Our Team?At LiveFlow, you have the unique opportunity to shape your role based on your skills, passions, and aspirations.We encourage you to work intelligently, share your insights, and engage deeply with our mission and methodologies. Your contributions will be essential in cultivating an inspiring workplace culture and scaling our organization as we grow.Are you a problem solver? Our enthusiastic customers are eagerly waiting for the innovative solutions you'll bring forth. We face a multitude of stimulating challenges—both technical and non-technical—and while we may not have all the answers yet, we're committed to asking the right questions every day.If you take pride in customer satisfaction and are excited to contribute to a product that brings value, while maintaining a balance between detail and progress, we want to hear from you!

We are seeking a talented and driven Full Stack Engineer to join our dynamic team at mlabs in New York. In this role, you will be responsible for developing and maintaining our web applications, ensuring a seamless user experience while collaborating with cross-functional teams to deliver high-quality software solutions.

OffDeal is pioneering the future of finance as the world's first AI-native investment bank tailored for small businesses. Rather than simply providing AI solutions to established firms, we are reimagining what an investment bank could look like in 2025.While traditional Wall Street strategies excel in handling billion-dollar transactions, they often fall short in addressing the needs of smaller enterprises. Conventional firms typically rely on large teams and outdated systems, rendering smaller mergers and acquisitions (M&A) unviable. This gap has left countless small business owners without reliable options for their most critical sales.Our innovative engineering team has developed software that automates over 80% of analyst tasks using AI, allowing our dedicated bankers to concentrate on building trust with business owners and finalizing deals.Recently, we secured $12 million in Series A funding (totaling $17 million) from Radical Ventures and Y Combinator, propelling our rapid growth. Within less than a year, our team has successfully facilitated more than 30 sell-side M&A transactions, providing transformative exits for our clients—and we are just getting started.For more about our journey, explore the following articles:Financial Times ArticleCNBC Video InterviewThe Bull Case for AI-Native InvestmentYour RoleAs a Full Stack Engineer, you will collaborate closely with our CTO to develop our AI-native platform, empowering our investment bankers to enhance their productivity tenfold. Your contributions will significantly influence the transfer of $10 trillion worth of small businesses in the coming decade.Key ResponsibilitiesPartner with our investment banking team to lead projects from conception to deployment.Engage in full-stack development within our 100% TypeScript environment (ReactJS + NodeJS).Utilize cutting-edge AI technologies to enhance our internal systems.

Kontakt.io is revolutionizing the way care operations are managed.Our mission is to minimize waste, lower costs, and enhance revenue by optimizing asset utilization and boosting staff productivity.Leveraging AI, RTLS, and EHR data, our platform empowers self-learning agents to automate workflows, adapt in real-time, and seamlessly orchestrate all aspects of care delivery operations. It is designed for easy deployment and scalability, providing a comprehensive overview of spaces, equipment, and personnel, thereby eliminating inefficiencies and enhancing the patient experience. With a remarkable 10X return on investment and over 20 successful use cases, Kontakt.io stands as the preferred platform for expedited and improved care delivery operations.We invite you to join us in creating the next generation of patient-flow intelligence. As a Full Stack Engineer at Kontakt.io, you will design and develop systems that manage patient milestones, identify and mitigate discharge barriers, and proactively address unit-level bottlenecks. Your contributions will play a pivotal role in enhancing care delivery by automating escalations and facilitating high-census communications throughout hospital operations.

About HyphaHypha is an innovative AI-driven platform that is redefining asset management throughout its entire lifecycle—covering acquisition, management, and exit strategies. With a special focus on healthcare facilities and multifamily real estate, we are leading a transformative journey in the industry through three pivotal pillars:Observability: Ensuring real-time insights into asset performance, deal progress, and market dynamics for all stakeholders.Intelligence: Facilitating AI-powered multidimensional optimization, complete with risk assessments, tax strategies, and benchmarking.Orchestration: Crafting seamless workflows and a unified source of truth to eradicate inefficiencies.Role OverviewAs a Full Stack Product Engineer at Hypha, you will be at the forefront of building the features that our users rely on daily. Your responsibilities will include developing systems for data visualization, entity management, search functionalities, dashboards, and document workflows. You will collaborate closely with product managers and designers to translate complex challenges into clear, user-friendly product experiences.This role sits at the crossroads of frontend, backend, and product strategy. You will engage across the entire technology stack, delivering features from concept to production, while also influencing the product's evolution. The emphasis is on more than just coding; it’s about deeply understanding user needs and crafting thoughtful, well-designed solutions.We are eager to hire candidates from diverse experience levels for this role, ranging from early-career engineers to seasoned professionals with extensive systems and product backgrounds. The level of the position and corresponding compensation will be established through the interview process.

Join Basic Capital as a Full Stack Software EngineerAt Basic Capital, we are revolutionizing the $1 trillion retirement industry in the United States by creating innovative financial solutions that empower Americans to build wealth for their future. Our mission is to design cutting-edge products, platforms, and a credit marketplace that fundamentally transforms the retirement landscape.Our founding team comprises experts from prestigious organizations such as Goldman Sachs, Uber, Block, Stripe, and Robinhood. Supported by top-tier investors including Lux Capital, Forerunner Ventures, BoxGroup, SVAngel, Inspired Capital, and Henry Kravis, we are located in the vibrant SoHo neighborhood of NYC. We are building a dynamic, high-performance team dedicated to tackling wealth inequality.Discover more about us at Basic Capital’s website.Your RoleCollaborate with a small, impactful team to create outstanding user experiences on iOS, Android, and web platforms.Design and implement our new developer-facing API to facilitate third-party integrations.Architect and deploy AI-driven features to enhance user interaction.Oversee the entire product development lifecycle, from design collaboration to deployment and monitoring.Engage in architecture discussions, planning, and code reviews across the technology stack.

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.

Join Odyssey:At Odyssey, we are dedicated to revolutionizing access to exceptional education nationwide, irrespective of income or location. Our innovative technology simplifies educational choices for parents in the regions we serve. By collaborating with state agencies and educational vendors, we streamline the process that empowers parents to secure the essential tools for their children's success.As the pioneering company focused on education savings accounts (ESAs), our platform currently facilitates programs that assist over 200,000 students in accessing more than $2 billion in state funding.Role Overview:As a Full Stack Engineer at Odyssey, you will play a pivotal role in developing the foundational technology that drives our platform. Your work will span the entire technology stack, including program eligibility systems, educational fund ledgers, and a marketplace that allows schools and vendors to process tuition and service payments.This position emphasizes the creation of full-stack systems, which encompasses scalable services, APIs, data models, frontend user interfaces, and internal tools designed to support families, educational institutions, providers, and operational teams as our platform expands.By joining our dynamic team, you will utilize your expertise to make a tangible difference in the quality and accessibility of K-12 education throughout the United States.Your Responsibilities:Design, architect, and develop engaging functional experiences for users leveraging TypeScript, AWS Lambda, Next.js, and a variety of other technologies.Create, implement, and execute robust testing protocols to ensure the reliability and stability of our applications.Develop sophisticated database models with a focus on scalability and performance optimization.Build and maintain APIs for both public and internal utilization, enhancing our mobile applications and other systems.Collaborate with the product team to drive ongoing enhancements of Odyssey’s Marketplace platform.Work with cross-functional teams to identify challenges, devise solutions, and close product gaps.Encourage open communication within the team, sharing both obstacles and achievements transparently.Participate in system design, platform management, code reviews, and capacity planning.

GovWell builds AI-powered software to help local governments deliver better, faster services. By replacing outdated municipal systems, the team aims to cut processing times for permits and licenses by up to 90 percent. Since its founding in 2023, GovWell has enabled over 5,000 essential workflows for agencies in more than 30 states, reaching millions of residents. The company is headquartered in New York City and has raised $10 million in seed funding from Work-Bench and Bienville Capital. For more on GovWell’s story, see their recent feature in TechCrunch. Why work at GovWell? Meaningful mission: GovWell focuses on building AI-driven solutions that modernize government systems, aiming to improve how citizens interact with public agencies. WATCH: Mission & Vision with CEO & Co-Founder Troy LeCaire Real-world impact: The platform serves as the official record for government services, directly affecting millions of Americans. Projects range from streamlining small business permitting to supporting affordable housing initiatives. Startup growth: GovWell has achieved 4X ARR growth in the past year and continues to expand quickly. Early team members work closely with founders and take ownership of significant projects. Role overview The Full-Stack Software Engineer will help build and improve GovWell’s core platform, which powers faster and more efficient government services. This role involves working across both frontend and backend systems to design, develop, and launch new features that support government operations and resident access. Reporting directly to the CTO and Co-Founder, Ben Cohen, this engineer will take responsibility for key product areas and have the chance to shape the platform in a growing company based in New York.

Join Claylabs as a Full Stack Software Engineer!At Clay, our mission is to empower organizations to bring their growth ideas to fruition. We believe that growth is a creative journey rather than a mere formula. Identifying and engaging with your ideal customers requires unique insights and continuous innovation. In a rapidly evolving AI landscape where tactics can be easily replicated, creativity stands as the true differentiator.We have successfully partnered with thousands of clients, including industry leaders like Anthropic, Notion, Google, and Ramp, helping them leverage unique data, insights, and AI-driven research to effectively market their offerings.As of 2025, we celebrated exceeding $100 million in revenue and secured a $100 million Series C funding round, achieving a valuation of $5 billion. Our growth is supported by esteemed investors such as Sequoia, CapitalG, and First Round. Additionally, we have successfully executed our second employee tender offer and initiated a community equity round for our customers, agency partners, and club members.Here are some key highlights about Clay:Our community consists of over 11,000 customers, 150+ integration partners, 125+ agencies, 50+ Clay clubs, and 30,000 members on Slack.Our culture is vibrant both inside and outside of work, featuring team members who are DJs, activists, writers, marathoners, and more.All employees have the opportunity to work alongside world-class coaches specializing in creativity, management, and more.Our guiding principles — including negative maintenance and non-attached action — shape our approach to work. Learn more about them here.You can read more about our achievements in the New York Times.

About BleeAt Blee, we are revolutionizing traditional workflows that often rely on spreadsheets and emails by introducing AI-driven software that unifies organizations to meet compliance requirements more efficiently, thoroughly, and transparently. Our platform is already empowering thousands of active users from numerous enterprise clients who are engaged in long-term contracts. Our leadership team boasts experience from prestigious organizations such as Adobe, Chime, PayPal, AWS, Wachtell, Harvard Law, and Columbia Law.We have engineered a unique platform that addresses the specific challenges faced by our customers from end to end. The ideal candidates for Blee will not only be adept problem solvers but also relish the challenge of identifying user needs, particularly as many of our users are new to products like ours.With offices in downtown San Francisco and New York City, our team is primarily distributed across these vibrant locations.The RoleThis Full Stack Engineer position is designed for a versatile generalist who excels at constructing solutions to specifications and tackling complex implementation challenges. While your expertise will span the entire technology stack, you will predominantly focus on backend services, database architecture, and infrastructure — laying the groundwork that powers our platform. You will translate product requirements into polished, production-ready features through close collaboration with engineering leadership, product teams, and customer-facing staff.

Join our dynamic New Patient Experience team at Talkiatry as a Senior Full-Stack Engineer. This innovative product team is dedicated to enhancing the patient journey from their initial interaction to their first appointment. By optimizing how new patients find, assess, and begin their care with us, we contribute significantly to Talkiatry's mission of making mental health services more accessible.In this pivotal role, you will spearhead the development of impactful features and systems aimed at increasing patient conversion rates and simplifying the onboarding process, ensuring a smooth digital start to care. You will work closely with product, design, and data teams to create robust, extensible, and maintainable systems using TypeScript, running on AWS.

Full Stack EngineerSalary: $170,000 – $225,000 • Meaningful EquityAbout NovigAt Novig, we are revolutionizing sports betting by creating America’s premier sports prediction market. Founded by visionaries Jacob Fortinsky and Kelechi Ukah, our platform uniquely offers commission-free sports trading, delivering enhanced pricing, complete transparency, and an efficient market structure by moving beyond the conventional sportsbook model.Supported by top investors from Silicon Valley, Novig has raised over $100 million from notable names such as Pantera, Forerunner, Lux, NFX, Paul Graham, and Joe Montana.Our MissionWe are dedicated to transforming a flawed system where the house consistently wins and fans lose. Our goal is to democratize and innovate sports betting, creating an equitable market where users are empowered.Why You Should Join UsEager to collaborate across the entire tech stack to develop advanced sports betting infrastructure.Leverage technologies from modern financial exchanges to promote transparent and efficient market practices while ensuring an enjoyable user experience.Significantly influence both the market engine and the user interface.Create and sustain a developer-friendly API experience for algorithmic trading and advanced users.Enhance product features by extending backend services and contributing to frontend components.Scale real-time data ingestion, processing, and distribution systems.Work closely with Design and Product teams to create efficient and user-friendly interfaces.Contribute to architectural and system design decisions across the technology stack.Enhance observability and reliability of both backend and frontend systems.Bring a passion for sports, markets, and technology, along with an inquisitive mindset for complex computer science challenges.Hold a Bachelor’s or Master’s degree in Computer Science or a related technical field.Possess a minimum of 3 years of professional experience in building full-stack applications.Demonstrate proficiency in a systems programming language.

Are you frustrated with the inefficiencies and complexities of traditional finance? At Superstate, we are too. We are pioneering investment solutions that leverage the rapid, programmable, and compliant nature of blockchain tokenization.In your role as a Senior Full-Stack Engineer, you will play a crucial part in guiding our team to develop exceptional user experiences that are distinctive, reliable, and scalable across all Superstate frontend platforms. You will have the chance to shape the direction, design, and implementation of future product experiences.

About Us:ether.fi is a leading player in the cryptocurrency sector, managing over $10 billion in assets with a dedicated team of 30 technical experts. Profitable since our inception, we focus on developing genuine consumer applications.We envision a future of on-chain banking with innovative products like Stake, Liquid, and Cash, allowing users to earn yields through diverse DeFi strategies and utilize their assets in the real world via our credit cards. Explore our public analytics for Cash and Stake.Position Overview:We are seeking a Senior Full Stack Software Engineer to take ownership of feature delivery for our core products. This position is integral to our engineering team, focusing on the complete development of user-facing features, including on-chain portfolio reporting, corporate card functionalities, DApp interfaces, banking transfers, and notification systems. Our roadmap includes everything a neobank would build.Responsibilities:Lead end-to-end feature delivery, working on both backend and frontend components.Collaborate with designers to define the scope and break down technical requirements for new features.Partner with fellow engineers to produce high-quality code and uphold engineering standards.Monitor core business metrics such as user adoption, revenue, and error rates.Qualifications:Solid foundation in software engineering principles and problem-solving skills.Proven track record of successfully launching products with a substantial user base.5+ years of professional coding experience.Motivated, hardworking, and committed to achieving ambitious goals as part of a driven team.Experience in the web3 space is a plus.Benefits:Competitive salary, performance-based bonuses, and token allocation grants.Flexible working hours and opportunities for professional growth.Access to comprehensive health benefits and wellness programs.

Patlytics develops AI-powered tools for patent intelligence, supporting legal and intellectual property teams as they protect and monetize IP. The platform relies on generative AI and large language models to simplify patent workflows, including drafting and litigation, and provides timely, accurate insights. After raising $40M in Series B funding led by SignalFire, Patlytics is expanding its product suite and growing its global presence. The company values diversity, creativity, and an entrepreneurial approach. Curiosity and a drive to improve IP intelligence shape the team’s work. Role overview The Full Stack Software Engineer will build and deliver features across the platform’s stack. This platform is trusted by Fortune 500 legal and IP teams. The position plays a part in reshaping how intellectual property is managed and protected.

About JuniorAt Junior, we are revolutionizing the investment research landscape with innovative LLM-powered tools designed specifically for private market investors. Our clientele includes some of the world's leading private equity and consulting firms, collectively managing billions in annual investments. As a profitable and bootstrapped startup, we pride ourselves on our dynamic team of 24 professionals located in both London and New York City.Discover more about our mission and values here. Role OverviewAs one of our inaugural engineering team members, you will have the exceptional chance to:Rapidly deliver high-quality featuresConceptualize and develop new methods for interacting with technologyEngage in pioneering projects involving LLMsCollaborate closely with our partners to drive growthInfluence product direction and prioritize initiativesHelp shape our engineering culture from the ground up Sample ProjectsDevelop innovative products to integrate diverse research inputsCreate a voice-to-voice survey tool that autonomously performs high-volume research tasks with minimal latencyLaunch a mobile application from the ground up within three weeksConstruct segmented knowledge graphs from the transformation of unstructured into structured dataDesign an AI-native CRM system linked to the aforementioned knowledge graph About YouWe are searching for product-focused full-stack engineers who:Are based in NYCAre enthusiastic about making substantial contributions to product strategyPossess excellent communication abilities and enjoy client interactionAre skilled in our technology stack: Next.js, TypeScript, PostgreSQLBonus points for experience in developing and designing AI-driven products!Are driven to build rapidly and efficiently