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.

Founding Full Stack EngineerLocation: San Francisco Bay AreaType: Full-TimeCompensation: Competitive salary + significant equity (founding tier)Supported by 8VC, we are assembling a top-tier team to address one of the industry's most pressing infrastructure challenges.About the RoleWe are seeking a founding full stack engineer to help design and build our platform from the ground up. This is a rare opportunity to influence a substantial portion of the technology stack and advance into a leadership position with considerable equity potential.You will work on infrastructure that merges extensive data systems with AI-driven agents. This role offers a high degree of autonomy and ownership over core architecture and the foundational team culture.Your responsibilities will include writing production code for both backend and frontend, defining interfaces between components, shaping devops and data infrastructure, and translating abstract ideas into functional systems. If you thrive in an environment with rapid feedback, direct impact, and long-term rewards, this position is ideal for you.ResponsibilitiesDesign and develop scalable APIs, backend services, and web application componentsContribute across the technology stack: data pipelines, agents, web UIs, and deployment systemsCreate and implement internal tools, testing frameworks, and CI/CD pipelinesCollaborate closely with product and design teams to quickly prototype and deliver featuresHelp establish engineering processes, contribute to documentation, and foster the early team cultureOur Technology StackWhile familiarity with the entire tech stack is beneficial, the ability to quickly learn and adapt to new technologies is paramount. You will encounter technologies such as:Languages: TypeScript (Node.js), Python (FastAPI)Frontend: React, Next.js, TailwindBackend: Postgres, DuckDB, GraphQL (Hasura), Kafka, RESTCloud/Infra: AWS, Docker, GitHub Actions, ArgoCD, Kubernetes (basic)AI/Agents: LangChain, LangGraph, OpenAI, Anthropic, LLaMA, Pinecone, QdrantGovernance: Keycloak, Open Policy Agent (OPA), OpenTelemetryVisualization: Vega, Flourish, React ReChart

At Ventuals, we are revolutionizing on-chain markets to provide everyone the opportunity to engage with technological advancements. Our focus begins with perpetual futures for pre-IPO companies.The private equity landscape, valued at over $13 trillion, has historically excluded retail investors. As top startups remain private longer, everyday investors have been denied access to their growth.Ventuals aims to democratize private markets, allowing anyone to trade shares in leading private companies such as OpenAI, SpaceX, Anthropic, and Stripe.With our innovative technology built on Hyperliquid, we've achieved impressive traction on the testnet, attracting approximately 10,000 weekly active traders and surpassing 1 million trades within just two months of our launch, all without a dedicated marketing budget.Our seed funding round was spearheaded by Paradigm, complemented by angel investments from Coinbase Ventures, Electric Capital, Ethereum Foundation, Uniswap, and Flashbots.Based primarily in New York, our small yet elite team often collaborates from a stylish office in Soho alongside other early-stage companies funded by Paradigm.About the RoleWe are seeking a senior or staff-level engineer to join Ventuals in anticipation of our mainnet launch. You will play a pivotal role in defining the user experience, trading systems, and infrastructure that will be available to our users from day one.As a versatile engineer, you will engage with the entire technology stack—developing user-facing features on our Next.js application, constructing essential trading APIs, and optimizing the infrastructure that supports our exchange.

Hello there!We appreciate your interest in our open role and aim to provide you with as many details as possible. Should you have any questions, don't hesitate to reach out – we look forward to receiving your application, even if there are certain skills you have yet to master!About UsAt South Geeks, we specialize in connecting top-tier Software Engineers, Security Experts, and Data Analysts from Latin America with innovative companies across the globe. With over 8 years of experience, we have been instrumental in helping forward-thinking organizations accelerate their growth by curating exceptional tech talent and fostering long-lasting partnerships. Our people-centric culture is the driving force behind our commitment to innovation, collaboration, and excellence.About the ClientOur client is a trailblazing biotechnology firm dedicated to harnessing the capabilities of the adaptive immune system to revolutionize disease diagnosis and treatment. By integrating genomics, bioinformatics, and machine learning, they unveil insights that are redefining patient care protocols. Their engineering teams are tasked with developing scalable and secure applications that facilitate breakthroughs in personalized medicine.About the RoleWe are on the lookout for a Full-Stack Engineer (Java + JavaScript) to join our dynamic team. In this capacity, you will be responsible for designing, developing, and maintaining scalable applications that drive essential features across both backend and frontend systems. You will collaborate closely with cross-functional teams, contributing to the entire stack from backend services and databases to web services and user interface development.Key ResponsibilitiesDevelop and sustain scalable applications utilizing Java and Scala.Implement feature enhancements and address bugs across the entire stack.Design and create backend services and controllers.Oversee PostgreSQL databases and execute SQL operations.Manage event file changes and data flow.Develop and integrate web services.Implement user interface changes using Angular or React and JavaScript.Collaborate with various teams to deliver comprehensive solutions.What You Need to Succeed in This RoleProficient programming skills in Java, Scala, and JavaScript.Practical experience with Angular or React for frontend development.Demonstrated ability to work collaboratively in a cross-functional team environment.

About the Role tetrix is hiring a Staff Full Stack Engineer in New York City. This position focuses on building and improving web applications using Python and JavaScript. The work centers on delivering reliable software and refining the platform’s user experience. What You Will Do Develop and maintain web applications with Python and JavaScript Work with teams across engineering, design, and product to deliver scalable solutions Help shape technical direction and ensure software meets customer needs Location This role is based in New York City.

About Pax HistoriaPax Historia is an innovative alternate-history sandbox game that allows players to select a country and a pivotal moment in time, enabling them to rewrite history. Imagine a world where Rome never fell, the Soviet Union thrived, or Genghis Khan reigned longer.Supported by Y Combinator, Pace Capital, and Z Fellows, our game has amassed nearly 20 million rounds played and is experiencing rapid growth. Your contributions will impact a product enjoyed by hundreds of thousands of players.Our CultureMany of our players discover Pax Historia through word-of-mouth, YouTube reviews, and other organic channels, and they return because of our commitment to building an exceptional game. We want every team member to share this passion. History enthusiasts are particularly welcome, but we encourage anyone who can articulate their excitement about our game to apply.As a small company, you will collaborate closely with the cofounders and a select group of employees. We seek self-motivated individuals who are team players and ready to champion their ideas. The leadership style here values autonomy, allowing you to thrive without micromanagement.Flexibility is crucial in our fast-paced environment. As we scale, be prepared to address various challenges that arise.Your RoleWe are looking for a full-time web developer to join us on-site in San Francisco (Dogpatch). You will report directly to the cofounders. This role is intensive, with an expected commitment of 50-60 hours per week initially, transitioning to potentially fewer hours as you settle in. While we prefer candidates who can commit to in-person work, there may be slight flexibility for hybrid arrangements (e.g., 1 day per week remote). Your schedule will have some flexibility.As a web developer, you will play a key role in enhancing the customer experience on paxhistoria.co.Given our small team size, you will also be expected to assist with various ad-hoc projects as they arise. This is a dynamic, evolving role!

unframe is looking for a Full Stack Software Engineer to join the team remotely from New York. This role focuses on building and maintaining software that enhances user experience and supports various projects across the company. Key Responsibilities Develop and maintain scalable applications as part of ongoing initiatives Collaborate with cross-functional teams to design and implement effective software solutions Contribute to projects that have a direct impact on users and support business objectives Location This is a fully remote role based out of New York, New York.

Founding Full Stack EngineerAt Syncopate, we're revolutionizing the back office of the music industry. To learn more about our vision and the significance of our work, check out our blog post.As an engineer myself, I understand the challenges of navigating through numerous startups that lack product-market fit, are overly reliant on venture capital, or don't offer competitive salaries. At Syncopate, we're dedicated to creating a business with robust product-market fit, complete independence, and tangible financial rewards, all while pursuing an ambitious and impactful goal. If you're a skilled engineer eager to earn what you're worth while tackling meaningful challenges in a bureaucracy-free environment, this opportunity is for you.Your RoleUtilize cutting-edge LLM technology to develop AI-driven products.Construct data systems capable of processing trillions of music data rows.Collaborate with the design team to create aesthetically pleasing frontend experiences for users.Take ownership of your projects from design through implementation, testing, and release.Note: As a small company, we encourage growth in various directions based on your interests.Qualifications3+ years of experience in software engineering.A strong desire to build something you can take pride in.Proficient in Typescript and the NodeJS ecosystem.Experience with OLAP DBMS such as Clickhouse.Familiarity with React.Experience in cloud-based DevOps workflows.Preferred TraitsA genuine interest in the music industry, as understanding its nuances is crucial for this role.Comfortable working with extensive and complex third-party datasets.Experience in building production-ready AI-native applications using LLMs for mission-critical components.

Company Mission Aktos is an innovative seed-stage Vertical SaaS Fintech startup on a mission to revolutionize the $18B Credit Collections industry. We are seeking a Founding Full Stack Engineer (70/30 Backend focused) who will play a pivotal role in developing the Operating System that empowers credit collectors to help consumers improve their financial well-being. Credit collectors play a crucial yet often underappreciated role in our financial ecosystem. By assisting consumers in managing their debts and enhancing their credit scores, they provide a valuable service that enables individuals to start anew. Furthermore, collectors help vital businesses—such as medical practices and local governments—minimize payment default risks, ultimately securing their revenue streams. At Aktos, we are committed to creating a modern software platform tailored to the unique workflows of collectors, transforming the credit recovery process into a more positive experience for all stakeholders. Our Team Aktos was founded by a team of experienced Product and Engineering leaders with backgrounds from top-tier companies including Zenefits, TikTok, Meta, LinkedIn, Google, Apple, Amazon, WeWork, and Flatiron Health. Join us and collaborate with industry experts as we build, launch, and scale world-class software solutions. Our Tech Stack: Frontend: ReactJS, Redux, RTK Query Backend: Django, DRF, Postgres DevOps: Kubernetes, Celery, GitHub Actions, Terraform, AWS Key Responsibilities: Collaborate with our CEO, CTO, and a small team of engineers to develop full-stack features and enhance our product. Engage with the entire tech stack using cutting-edge frameworks and tools while taking ownership of your execution. Assume end-to-end responsibility for your contributions and lead significant components of our product roadmap.

About Glass HealthFounded by physicians, Glass Health is dedicated to harnessing technology to enhance medical practice and elevate patient care. We are committed to creating superior tools that allow healthcare professionals to focus on what truly matters—spending quality time with patients.Our mission is to empower clinicians with cutting-edge AI solutions for clinical decision support (CDS).We strive to enhance diagnostic precision, facilitate the application of evidence-based medicine, promote health equity, alleviate clinician burnout, and ultimately elevate patient outcomes on a global scale.About the Role:We are in search of skilled, innovative engineers proficient across the technology stack (Product, Full-Stack, Backend, Applied AI/LLM) to develop new products and enhance our existing offerings. Your expertise will be crucial in enabling rapid iterations while ensuring our solutions are high-performing and reliable. In this dynamic, collaborative, and fast-paced environment, you will play a pivotal role in delivering our technology to a vast user base, ensuring it is executed with excellence and reliability.This is a Founding engineering position, providing you with significant ownership and influence over the company’s success, while playing an integral role in shaping the future of healthcare.

Join our team as a dedicated Full Stack Software Engineer with expertise in JavaScript and React, where you will leverage cutting-edge technologies to support the Department of Defense (DOD). We are looking for motivated professionals at the Mid-Level to Senior level who are eager to contribute to innovative projects.This position is based in an Agile development environment, working within a DOD research lab situated in Reston, VA. You will collaborate closely with Data Scientists and fellow Engineers to create sophisticated visualizations for various datasets and analyses, utilizing OpenLayers, React, and Redux for the user interface, alongside Express.js interfacing with PostgreSQL as the database solution. Additionally, if you possess experience in automation, there will be opportunities to enhance our processes further.We pride ourselves on fostering a collaborative workspace, utilizing Atlassian tools such as Jira, Confluence, and Bitbucket for project management.

We are seeking a talented and motivated Remote Full Stack Software Engineer to join our dynamic team at Jobgether. In this role, you will be responsible for developing and maintaining both client-side and server-side applications, ensuring seamless user experiences and efficient backend processes. You will work alongside cross-functional teams to deliver high-quality software solutions.As a Full Stack Engineer, you will have the opportunity to engage in the entire software development life cycle, from conception to deployment. Your expertise in various programming languages and frameworks will be crucial in driving innovation and improving our products.

Join Us at CredalAt Credal, our mission is to leverage frontier AI technology to empower those who are committed to building a brighter future for all.We specialize in streamlining the most intricate operations for some of the world's most influential organizations, incorporating security and governance at every stage of our product development. Our esteemed clients include the U.S. Department of Health and Human Services, MongoDB, Comcast NBCUniversal, Lattice, Wise (TransferWise), Checkr, and incident.io, among others.Having successfully raised over $10 million to date, we have substantial runway to support our growth. You will become a valuable member of our team of Thoughtful Doers™, who hail from renowned companies such as Palantir, Cruise, Meta, Uber, and Google. Our team operates in-person from our spacious Brooklyn office, with meals provided.About the RoleWe are seeking a founding Full Stack Engineer to build upon our existing progress, catering to the proven market demand from global enterprises, while creating a scalable and high-performance architecture that upholds our industry-leading security standards.Responsibilities include:Enhance our platform to empower customers in building top-tier agents and MCP servers, facilitating productivity in their workflows.Contribute to architectural and design decisions, along with establishing strategies for code and product quality.Ensure reliable synchronization of billions of records into our data platform from customer SaaS tools.Collaborate directly with customers and our Go-To-Market (GTM) team to identify and address complex, cutting-edge challenges.Take full ownership of our core products, which utilize the following technologies:Frontend: React, TypeScript, Next.js, TailwindBackend: TypeScript, Temporal, Next.js, Gel/PostgreSQLAI/ML: OpenAI, Anthropic, Cohere, Gemini, Milvus/QDrant/MongoDBCloud: AWS, Terraform, Helm, KubernetesAbout YouYou could be an excellent fit if you're a passionate developer with proficiency in both frontend and backend technologies, and possess a keen interest in Agentic AI and LLM applications, even if you lack direct experience in AI.You are motivated to join our mission of advancing frontier intelligence in sectors that significantly impact human welfare, such as healthcare, government, and financial infrastructure.Coding is second nature to you, and you thrive in dynamic environments.

Why Join Dotmatics?At Dotmatics, we are committed to integrating science, data, and decision-making to drive innovation in scientific research.Our portfolio includes leading solutions such as Luma, LumaLab Connect, ELN Platform, and many more, supporting over 2 million scientists worldwide.Our Vision: We are transforming the landscape of scientific research with our comprehensive digital science platform, designed to enhance the effectiveness of scientific enterprises, ensuring that critical advancements in health and environmental science are achieved without delay.About Us: With a global team of over 800 professionals, we are dedicated to accelerating scientific innovation and making the world a healthier, safer, and cleaner place. Join our collaborative team and make a real impact in the scientific community.

OverviewTetrix is an innovative startup dedicated to empowering institutional investors to confidently navigate alternative markets, akin to Bloomberg but specifically for private markets. Our cutting-edge, AI-driven platform streamlines complex, unstructured private market data into actionable insights, featuring automated document retrieval, AI-enhanced data extraction, and real-time portfolio analytics—all integrated into a single, user-friendly solution. As we rapidly expand into a category-defining product, we collaborate with prominent capital allocators globally. Join our passionate team on this unique journey to reshape the future of financial market infrastructure, backed by distinguished investors including Innovation Endeavors, Eric Schmidt’s VC firm, and influential angels from BlackRock, CPPIB, SoftBank, Lending Club, and Plaid. Who We AreOur team may be small, but we are driven and experienced, boasting solid expertise in financial markets and modern technology. We have cultivated a culture of trust, ownership, and curiosity, where each member is encouraged to contribute, challenge ideas, and grow collectively. Led by co-founders Olivier (CEO) and Naunidh (CTO), who forged their partnership during their MBA studies at Stanford, Tetrix was founded in the summer of 2023. Who You AreYou are proactive and hands-on, taking the initiative to drive projects forward.You learn and adapt swiftly, tackling challenges with creativity and resourcefulness.You prioritize the customer experience, ensuring that your decisions enhance user satisfaction.You excel in a collaborative environment, valuing open communication and teamwork.You bring 5+ years of experience in Python and JavaScript, ideally within dynamic or entrepreneurial settings. Open-source contributions are a plus. What You’ll DoDesign, develop, and maintain robust web applications using Python and JavaScript.Collaborate with cross-functional teams to define, design, and ship new features.Ensure the performance, quality, and responsiveness of applications.Identify and fix bugs and performance bottlenecks.Contribute to all phases of the development lifecycle.

Found delivers a personalized weight management platform that combines modern medicine, behavioral support, coaching, and community. Since launching in 2019, the company has served over 250,000 patients across the U.S., offering affordable care backed by more than $130M in funding from investors such as Atomic, GV, WestCap, IVP, TCG, and Define Ventures. Found’s team focuses on clinically sound and cost-effective solutions for sustainable weight loss and metabolic health, pairing board-certified clinicians and a variety of medications with a modern member experience. The company is profitable, growing rapidly, and committed to treating weight as a chronic condition. Role overview This fully remote Senior Lifecycle Marketing Manager position leads Found’s pre-purchase lifecycle marketing efforts, guiding both growth and retention strategies from planning through execution. The role develops and runs lifecycle programs, manages campaigns in Braze, tests new approaches, and measures outcomes. Over time, responsibilities will expand to include post-purchase retention. As a senior individual contributor, this position will take on much of the work currently handled by agencies and will collaborate closely with Product, Clinical, Creative, and Paid teams. The role also involves building an AI-supported content engine to help scale campaign output, streamline testing, and ensure compliance. Direct access to the VP of Growth and executive leadership is part of the position, along with the opportunity to use AI tools to maximize impact. Key responsibilities Pre-purchase lifecycle ownership: Lead nurture campaigns, abandoned checkout follow-ups, reactivation strategies, Benefit Verification, lapsed-member re-engagement, cold-lead programs, and product launch communications. Manage these initiatives from strategy through Braze implementation, quality assurance, launch, and iteration. Hands-on Braze execution: Design canvases, create segments, conduct QA for push, SMS, and email, manage suppressions, and monitor deliverability. Use Liquid as needed for builds. Measurement and reporting: Set up holdouts, run incrementality assessments, and track lifecycle marketing conversions in Amplitude and Sigma. Provide monthly reports connecting lifecycle metrics to CAC and LTV:CAC goals.

Role Overview Capstone Integrated Solutions is hiring a Senior Full Stack Developer with strong skills in JavaScript and AWS. This fully remote position focuses on building and scaling web applications that support a range of innovative projects. What You Will Do Design, develop, and implement scalable web applications Work closely with cross-functional teams to deliver project goals Contribute expertise in JavaScript and AWS throughout the development process About Capstone Integrated Solutions Capstone Integrated Solutions delivers technology solutions that help clients move their businesses forward. The team values collaboration and practical problem solving.

About Uplane (YC F25)At Uplane, we're on a mission to revolutionize how companies manage their marketing budgets. Our cutting-edge AI system replaces outdated methods like disjointed agencies and spreadsheets, drastically reducing inefficiencies. By creating targeted ads, developing cohesive landing pages, and optimizing budget allocations across multiple channels, we empower our clients to maximize their marketing potential. Join us in building the AI engine that will redefine marketing strategies globally.About The RoleWe are looking for a talented and enthusiastic Full-Stack Engineer to become a pivotal part of our dynamic team in San Francisco. This role presents an incredible opportunity to take full responsibility for developing features from the initial concept through to deployment, all within the exciting environment of an early-stage startup.Why Join Us?Be part of an innovative startup from the ground upTackle significant challenges within a vast marketTake ownership of your work and advance rapidly in your careerExperience a culture that is fast-paced, ambitious, enjoyable, and groundedResponsibilitiesFull-Stack Development: Design, implement, and sustain scalable applications with Node.js, TypeScript, and Nuxt (Vue).System Architecture: Develop and manage effective database schemas using PostgreSQL and Supabase, ensuring data integrity and optimal performance.Infrastructure & Operations: Oversee application deployments and background tasks via Render and Inngest, while contributing to the maintenance of dedicated deployments on Microsoft Azure.Product Ownership: Lead projects through all phases, including ideation, execution, deployment, and continuous support.User-Centric Design: Utilize strong product and design acumen to develop software features that are user-focused and aligned with market demands.Collaboration: Work closely with the operations team and customers via Slack and Notion to guarantee that technical solutions meet user needs.QualificationsBachelor’s or Master’s degree in Computer Science or a related field, or equivalent hands-on experience.Experience with full-stack development, including proficiency in Node.js, TypeScript, and Vue.js frameworks.Strong background in database management, particularly with PostgreSQL and Supabase.Familiarity with cloud services such as Microsoft Azure.Excellent problem-solving skills and a passion for building user-friendly applications.Effective communication skills for collaborating with team members and stakeholders.

The future of AI begins with high-quality data.At HumanSignal, we are creating the platform that enables the creation, curation, and evaluation of that data. From fine-tuning foundational models to validating behaviors of agents in production, our tools play a crucial role for leading AI teams, ensuring that models reflect real-world signals, not noise.Our open-source product, Label Studio, has risen to become the de facto standard for labeling and evaluating data across various modalities—ranging from text and images to time series and agents-in-environments. With over 250,000 users and hundreds of millions of labeled samples, it stands as the most widely adopted open-source solution for teams focused on developing AI systems.Label Studio Enterprise enhances this foundation by incorporating the security, collaboration, and scalability features essential for supporting mission-critical AI pipelines—fueling everything from model training datasets to evaluation test sets and continuous feedback loops. We started our journey before foundation models were mainstream, and we are committed to advancing now that AI is reshaping the world. If you are eager to assist leading AI teams in building smarter and more accurate systems, we would love to connect.This is a product-engineering role: not merely “build what you’re told,” but rather shape what we build—own the problem, propose solutions, and deliver outcomes that are meaningful to users and the business.