Full Stack Application Engineer Jobs

Location: Fully remote, ideally located in CA, CO, NY, TX, FL, GA, MA, NJ, PA Open Core Ventures (OCV) is looking for a Full Stack Software Engineer to build web applications and embed AI capabilities across all our core functions. Your primary responsibility is to improve workflow efficiency and empower the entire business through smart, scalable AI and custom software. The ideal candidate will also participate in sourcing, evaluating, and starting new open source projects that support OCV’s thesis. As a key member of our small but mighty team, you’ll help us achieve our ambitious goal of launching 2,000 new companies per year. From reviewing open source codebases to owning internal systems like domain transfers and access controls, your work will directly support the company formation engine at the heart of OCV. What You’ll Do You will own the custom, internal software that we use to launch and support 2 companies per month currently, and 100+ companies per month in the future. You will use AI to build this software and to automate the various manual workflows. You will help us find and assess open source projects that we will start companies around. You will help support our companies, sometimes before we even have founders, by making contributions to the underlying OSS. You will be the system administrator for OCV. Who You Are A self-starter who thrives in fast-paced environments. Able to identify automation opportunities and independently bring them to life. Passionate about AI and systems design, with a strong drive to innovate and improve how work gets done. Passionate about open source software and love to solve new technical challenges. Requirements Bachelor’s degree in Computer Science, Engineering, or related field — or equivalent experience. Software engineering background, especially in backoffice systems and workflow automation. Proficiency with LLMs (OpenAI, Claude, etc.), APIs, RAG, and prompt engineering. Experience with Ruby

Who we are Lab37 Robotics , is a technology company focused on the development and deployment of robots designed specifically for direct-to-customer food production. Our mission is to revolutionize the food industry by creating innovative robotic solutions that enhance efficiency, quality, and customer satisfaction. We are passionate about pushing the boundaries of technology to deliver cutting-edge products that meet the evolving needs of our clients. What you’ll do You will work across frontend, backend, cloud infrastructure, integrations, and robot-adjacent interfaces. You will partner closely with product, culinary, operations, robotics, firmware and mechanical teams to turn ambiguous operational problems into reliable software. As we scale up, this team will work closely with our product and robotics software teams to solve exciting problems around release and deployment, configuration, learning management, and refining the robot interface. Work with a team to both lead and provide feedback on new designs, triage issues, and analyze system performance. Responsibilities Take ownership of frontend and backend software for configuring, observing, and managing kitchen operations Collaborate with culinary and product teams to gather requirements and translate them into technical solutions Integrate with delivery service providers to receive orders, provide status updates, and synchronize menus Create and integrate with the on-robot control panel interfaces Work alongside firmware, mechanical, electrical, and robotics engineers to ensure cohesive system functionality Contribute to code reviews and architectural decisions What we are looking for Proficiency in Go or C++ for writing backend services, particularly REST-based Proficiency in Vue3 or Svelte (preferred) and TypeScript for writing frontend web applications Familiarity with documentation tools (for example wikis, markdown, docs) and writing design documents and playbooks Ability to work collabor

Scale’s rapidly growing International Public Sector team is focused on using AI to address critical challenges facing the public sector around the world. Our core work consists of: Creating custom AI applications that will impact millions of citizens Generating high-quality training data for custom LLMs Upskilling and advisory services to spread the impact of AI As a Full Stack Software Engineer (Forward Deployed), you’ll collaborate directly with public sector counterparts to quickly build full-stack, AI applications, to solve their most pressing challenges and achieve meaningful impact for citizens. At Scale, we’re not just building AI solutions—we’re enabling the public sector to transform their operations and better serve citizens through cutting-edge technology. If you’re ready to shape the future of AI in the public sector and be a founding member of our team, we’d love to hear from you. You will: Serve as the lead technical strategist for public sector engagements, converting ambiguous mission requirements into robust architectural roadmaps and guiding onsite implementation Architect the fundamental frameworks for production-grade AI applications, setting the gold standard for how interactive UIs, backend systems, and AI models are integrated at scale to deliver reliable outcomes. Guide the evolution of cloud infrastructure, ensuring security, global scalability, and long-term system integrity across all environments. Direct the development of core platforms and shared services, ensuring they solve cross-cutting needs for diverse global client use cases. Partner with cross-functional leadership to steer the technical roadmap, mentoring senior and junior staff and ensuring all products align with a cohesive, future-proof technical architecture. Bridge the gap between the field and the core platform by turning real-world client lessons into the reusable patterns that power the entire engineering team. Ideally you’d have: Masters or Phd in Computer Science or eq

Scale’s rapidly growing Global Public Sector team is focused on using AI to address critical challenges facing the public sector around the world. Our core work consists of: Creating custom AI applications that will impact millions of citizens Generating high-quality training data for custom LLMs Upskilling and advisory services to spread the impact of AI As a Full Stack Software Engineer (Forward Deployed), you’ll collaborate directly with public sector counterparts to quickly build full-stack, AI applications, to solve their most pressing challenges and achieve meaningful impact for citizens. At Scale, we’re not just building AI solutions—we’re enabling the public sector to transform their operations and better serve citizens through cutting-edge technology. If you’re ready to shape the future of AI in the public sector and be a founding member of our team, we’d love to hear from you. You will: Partner with public sector clients to scope, collect feedback and implement solutions for complex problems, including spending up to two weeks per month in client offices for feedback and delivery. Architect production-grade applications that integrate AI models with full-stack frameworks, managing everything from interactive UIs to backend APIs and systems. Deploy and manage infrastructure within cloud environments, ensuring the highest levels of system integrity, security, scalability, and long-term reliability. Contribute to core platform features designed to be reused across diverse international client use cases. Partner with design, product, and data teams to build robust applications aligned with the broader technical architecture. Ideally you’d have: Bachelor’s degree in Computer Science or a related quantitative field 5+ years of post-graduation, full-stack engineering experience with demonstrated proficiency in React (required), TypeScript, Next.js, Python, Node.js, PostgreSQL or MongoDB plus hands-on experience with Docker, Kubernetes, and Azure

Job Title: Full Stack Software Development Engineer II (SDE II) Team: Product Engineering Location: Bangalore, India Employment Type: Full-time About the Role As a Full Stack SDE II in Sigmoid's Product Engineering team, you will take ownership of building scalable, reliable, and user-centric web applications. You will collaborate closely with product managers, designers, and system architects to drive features from design to deployment, ensuring robust frontend performance, clean backend services, and efficient database architectures. Key Responsibilities Full Stack Development Design and build responsive, high-performance web interfaces using React, TypeScript, Tailwind CSS, and Shadcn UI, backed by reliable API services using Node.js or Python (FastAPI). Database & API Design Model, query, and optimize relational data structures in PostgreSQL. Design, build, and maintain clean RESTful APIs and microservices. Code Quality & Best Practices Apply SOLID principles, basic design patterns, and clean code principles to write maintainable, scalable, and self-documenting code. Testing & Quality Assurance Implement comprehensive test suites using Jest, React Testing Library, or backend testing frameworks (e.g., PyTest) to maintain high code coverage and prevent regressions. Agile Execution Actively participate in Agile ceremonies (sprints, stand-ups, retrospectives, and planning) to deliver quality code incrementally. Collaboration & Mentorship Partner with cross-functional teams and mentor junior engineers through constructive code reviews and technical guidance. Requirements & Qualifications Technical Skills Frontend 3–5 years of hands-on experience with React, TypeScript, Tailwind CSS, and modern UI component libraries like Shadcn UI. State & Data Fetching Experience with modern client-side state management and data-fetching libraries (TanStack Query, Zustand, or Redux Toolkit). Backend Strong expertise in server-side development using Node.js or

Who we are About Bridge Bridge is building a new payments platform powered by stablecoins to make global money movement simpler, faster, and more accessible. Through our APIs, businesses can send and receive funds across borders, give customers access to dollars through virtual accounts, and disburse USD globally. We believe stablecoin rails will become a foundational part of financial infrastructure, moving and settling trillions of dollars worldwide. Bridge is helping bring that future forward. Our team has built financial infrastructure at companies including Coinbase, Stripe, Square, Brex, Upstart, DoorDash, and Airbnb. We are united by the conviction that stablecoins can materially improve how money moves around the world. What you’ll do Build and ship end-to-end product experiences across frontend applications, backend services, APIs, and data systems. Design reliable, performant, and intuitive interfaces for developers, operations teams, and end users interacting with Bridge products. Develop and maintain the APIs and backend systems that power global payments, virtual accounts, and payouts. Own projects from technical design through launch and iteration, often operating with substantial autonomy and without dedicated product management support. Debug and resolve production issues across the stack, with a focus on reliability, performance, and customer impact. Make thoughtful tradeoffs among business priorities, user experience, speed of execution, and long-term technical quality. Who you are We’re looking for someone who meets the minimum requirements to be considered for the role. If you meet these requirements, you are encouraged to apply. The preferred qualifications are a bonus, not a requirement. Minimum requirements 6+ years of professional software-engineering experience. We are open to candidates across a range of seniority, from experienced individual contributors through senior technical leaders. Experience building and shipping production software

About the Team OpenAI’s API Platform organization builds the products and infrastructure that help first-party and third-party developers build with OpenAI models. We ship the API primitives, tools, SDKs, documentation, playgrounds, and platform experiences that make OpenAI’s capabilities reliable, understandable, and useful in production. The API Experience team is focused on the end-to-end developer experience for the OpenAI API. We own the surfaces developers touch every day: docs, SDKs, the Playground, examples, onboarding flows, and the systems that help developers go from first request to production deployment quickly and confidently. About the Role We’re looking for full stack and frontend engineers to help define and build the next generation of OpenAI’s developer experience. In this role, you’ll work across frontend product surfaces, backend systems, SDK and documentation pipelines, and API workflows that serve millions of developers and companies. You’ll partner closely with product, design, research, API engineering, and developer-facing teams to make complex AI capabilities simple to understand, easy to test, and safe to launch in real-world applications. This is a highly cross-functional role for someone who cares deeply about craft, developer empathy, reliability, and product velocity. In this role, you will: Build and scale developer-facing products including the OpenAI API Playground, documentation experiences, onboarding flows, examples, and API workflow tools. Own full stack projects end to end, from product definition and UX collaboration through backend implementation, launch, measurement, and iteration. Improve the systems that generate, maintain, and publish SDKs, API references, docs, guides, and developer examples. Partner with API, research, design, and infrastructure teams to bring new model capabilities and API primitives to developers in a clear, usable way. Use developer feedback, product analytics, and direct customer insight to identif

Our mission: Creating the freedom for SMEs to succeed in business and beyond, by delivering Europe's leading finance workspace. Our journey: Founded by Alexandre and Steve in July 2017, Qonto has rapidly gained trust, serving over 600,000 customers with a team of 1,600+ Qontoers across Europe. Our beliefs: We evaluate applicants based on skills and potential — no boxes to tick. Our team is 55% international, 44% women, and 20% parents. Discover the steps we took to create a discrimination-free hiring process. ⭐ Mission Join us as a Freelance Full-Stack Engineer to build one of Qonto's first internal applications: a modern, high-quality People platform that transforms the daily experience of 1,700+ Qontoers - from compensation cycles and performance reviews to everyday HR workflows. You'll work hand-in-hand with Mélodie, our Head of People Systems, on a high-ownership mission: co-define the product vision, design the architecture, and ship to production. This is not a staff-augmentation engagement - it's a mandate for someone who builds like an owner. 👩‍💻🧑‍💻 As a Freelance Full-Stack Engineer, you will • Ship the People platform MVP by December 2026: migrate key Workday modules into a custom internal app (React for the front, Go for the back) that handles comp cycles, performance reviews, and daily HR workflows for 1,700+ Qontoers - on time and with zero compromise on quality. • Co-define the product vision and roadmap with Mélodie: run user discovery with People teams, challenge specs, and help decide what gets built first - not just how to build it. • Design for security and compliance from day one: architect systems that handle sensitive People data (GDPR, access controls, data residency) with the rigor the context demands. • Ship faster with AI: leverage AI tools (Cursor, Claude Code, Copilot…) in your daily workflow and build AI-enabled features where they create real leverage for the People team. • Enable long-term adoption: document your work, r

About the Team: GTM Innovation is a product engineering team with a charter to automate 100% of digital knowledge work in OpenAI's GTM, so sellers spend more time directly with customers. AGI-level reasoning doesn’t mean organization-level transformation “just works” out of the box; orgs must be redesigned around abundant intelligence and persistent virtual coworkers. Our team builds and scales a fleet of virtual coworkers that operate as full-time members of the account team, and redefines how our human-first revenue organization interacts with their agentic teammates. About the Role We’re looking for Full Stack software engineers with a product mindset to join the GTM Innovation team. As a product engineer on this team, you’ll help OpenAI meet the world at scale. You’ll partner closely with go-to-market teams to understand their workflows, identify leverage points, and ship novel solutions using OpenAI’s API platform. You’ll move quickly from prototype to production, and your work will directly shape how customers experience our technology in the field. This role is ideal for engineers who want to be close to users, own end-to-end outcomes, and help define entirely new categories of enterprise software. In this role, you will: Build high-impact applications and tools that accelerate OpenAI’s go-to-market efforts Work across the full product lifecycle for GTM: prototype, iterate, ship, and maintain Embed with Sales, Technical Success, and Revenue Operations to identify user needs and build for them Apply OpenAI’s models in novel ways to solve real-world customer and internal workflow problems Translate learnings into feedback for Applied and Research teams to inform product development You’ll thrive in this role if you: Have 4+ years of experience as a software/ML/product engineer working on user-facing systems Former founder, or early engineer at a startup who built a product from scratch is a plus Are fluent in Python or JavaScript and comfortable building full-s

SIXGEN’s mission is to deliver agile, mission-ready cybersecurity solutions that empower government and critical infrastructure organizations to stay ahead of advanced cyber threats. We combine innovation, deep expertise, and cutting-edge capabilities to uncover vulnerabilities, protect vital systems, and ensure operational superiority in an ever-evolving digital landscape. Position: Software Engineer Job Type: Full Time Location: Onsite, Ft-Meade, MD Clearance Requirements: TS/SCI w/ Poly Travel: None ABOUT THE TEAM SIXGEN supports missions by serving government and commercial organizations as they overcome global cybersecurity challenges. In this position, you’ll provide meaningful support to our customer’s missions and operations. You’ll work alongside a team of highly skilled operators who are dedicated to using innovative processes, tools, and techniques to get things done. WHAT YOU’LL DO Design, develop, test, and deploy software applications and systems in support of government and customer missions. Collaborate with systems engineers, analysts, and end users to understand technical requirements and translate them into software solutions. Write clean, efficient, and maintainable code using modern programming languages and development practices. Support integration, debugging, and testing activities in both lab and operational environments. Ensure software meets security, performance, and reliability standards, in compliance with government policies and frameworks. REQUIRED QUALIFICATIONS US Citizen with the ability to obtain a US Government Security clearance up to the Secret or TS level Proficiency in one or more programming languages such as Python, C++, Java, or C. Experience developing software in Linux-based environments. Familiarity with secure coding practices and software lifecycle principles. Strong problem-solving skills and the ability to work independently or as part of a collaborative team. Experience supporting DoD, IC, o

Full Stack Engineer About LaunchDarkly Engineering LaunchDarkly helps engineering organizations ship software and AI with speed , safety, and control. Our platform gives teams the confidence to release gradually, target experiences to the right audiences, learn through experimentation, understand what is happening in production, and respond quickly when risk appears. Our engineers build the systems, services, SDKs, developer tools, cloud infrastructure, and product experiences that make this possible. The work spans high-scale distributed systems, reliable data and event pipelines, intuitive enterprise workflows, and AI-powered capabilities that help teams manage the next generation of software delivery. LaunchDarkly’s SDKs are used in systems that perform trillions of feature flag evaluations each day, giving our engineering work a direct connection to the reliability and customer experience of software around the world. As the company grows, we are expanding beyond traditional feature management into experimentation, observability, and AgentControl—helping customers control more of the software and AI lifecycle. That creates an unusually broad set of technical challenges, visible customer impact, and room for engineers to shape what comes next. We believe in the power of teams. We work with humility, openness, curiosity, and care; we value clear communication, thoughtful technical judgment, inclusive collaboration, and a strong sense of ownership. We encourage people to apply even when they do not meet every qualification listed below. We are interested in the experience, perspective, and potential you would bring to the role. About the role The specific level and technical emphasis will vary by opportunity. Some teams may prioritize backend depth, data-intensive applications, enterprise workflows, observability, experimentation, or AI-powered product experiences. As a Full Stack Engineer at LaunchDarkly, you will build customer-facing product experiences and the

Roadie, a UPS company, is a leading logistics and delivery platform that helps businesses tackle the complexities of modern retail with unmatched delivery coverage, flexibility and visibility. Reaching 97% of U.S. households across more than 30,000 zip codes — from urban hubs to rural communities — Roadie provides seamless, scalable solutions that meet a variety of delivery needs. With a network of more than 310,000 independent drivers nationwide, Roadie offers flexible delivery solutions that make complex logistics challenges easy, including solutions for local same-day delivery, delivery of big and bulky items, ship-from-store and DC-to-door. For more information, visit www.roadie.com . *]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]" data-turn-id="request-WEB:0f3adf66-1b17-4aa9-90a0-cf57ee658f23-2" data-turn-id-container="request-WEB:0f3adf66-1b17-4aa9-90a0-cf57ee658f23-2" data-testid="conversation-turn-4" data-turn="assistant"> *]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]" data-turn-id="request-WEB:0f3adf66-1b17-4aa9-90a0-cf57ee658f23-3" data-turn-id-container="request-WEB:0f3adf66-1b17-4aa9-90a0-cf57ee658f23-3" data-testid="conversation-turn-6" data-turn="assistant"> This Full Stack Software Engineer will help build and evolve the web applications that power the driver experience at Roadie, while also contributing to RoadieXD™, our cross-dock solution, geospatial capabilities, and other foundational platform services. You’ll partner across Engineering, Product, and Operations to create intuitive, reliable experiences, solve complex logistics challenges, and build scalable systems that support millions of deliveries. If you enjoy owning feat

At Kargo, our mission is to build a connective tissue between the physical world of freight and the digital ecosystem used to manage it. We believe that advancements in smart infrastructure are critical to enabling a safer and more efficient future for logistics. Our loading dock sensor platform verifies all incoming and outgoing freight, aggregating data that enables shippers and carriers to efficiently manage dock operations, switch out suppliers and understand material flow in real time. We care deeply about delivering the best solutions for our customers. As a member of the Kargo team, you will have the opportunity to develop and deploy tomorrow’s hardware & software solutions and help revolutionize logistics. Responsibilities Develop the end-to-end experience for AI-powered products, including data pipelines, backend services, and user interfaces for interacting with the Kargo platform. Build and evolve Kargo’s customer-facing dashboards and applications, creating intuitive experiences that help users understand and act on complex logistics data. Develop software experiences across multiple surfaces - web, mobile, and kiosk interfaces deployed on Kargo Towers and forklifts. Collaborate with Product and Solution Engineers to build our agentic AI product suite. Strengthen the stability, scalability, and measurability of our backend systems. Experience 5+ years of software engineering experience building products at scale. Strong experience in TypeScript and Python. Experience building and shipping enterprise or consumer-facing products, with a strong understanding of how product needs translate into technical requirements. Comfort working cross-functionally and with direct customer stakeholders. Experience building modern web applications and APIs, with the ability to own features across the full stack. Strong understanding of backend architecture, distributed systems, scalability, reliability, and fault-tolerant system design. Experience with productio

Our vision is to transform how the world uses information to enrich life for all . Micron Technology is a world leader in innovating memory and storage solutions that accelerate the transformation of information into intelligence, inspiring the world to learn, communicate and advance faster than ever. Position Overview: We are looking for an AI Full Stack Engineer who builds modern applications using AI as a first-class capability—both as part of the development workflow and the systems we ship. This role goes beyond simply using AI coding assistants. It requires strong understanding of advanced timely creation, vibe scripting, Rework Rate Reduction, and applying Custom Agents with integrations built around MCP or equivalent experience. The goal is to significantly shorten development and feedback cycles by automating routine engineering work, augmenting human decision-making, and embedding intelligence into development workflows and delivered applications. Responsibilities: Contribute to platform enablement, architecture decisions, code reviews, and shared engineering standards; design, build, test, deploy, and operate full stack software solutions while owning features end‑to‑end including system design, implementation, testing, observability, and lifecycle support, and collaborating with business teams to translate requirements into scalable solutions Build and implement Custom AI Agents to support workflows like task automation, decision support, summarization, multi-step reasoning, and guided execution. Show proficiency in timely engineering and Vibe Coding prototypes. Build and integrate systems using the Model Context Protocol (MCP) to enable structured context sharing between models, tools, and agents, tool and capability exposure to LLM‑bas

Scale’s rapidly growing Global Public Sector team is focused on using AI to address critical challenges facing the public sector around the world. Our core work consists of: Creating custom AI applications that will impact millions of citizens Generating high-quality training data for custom LLMs Upskilling and advisory services to spread the impact of AI As a Full Stack Software Engineer (Forward Deployed), you’ll collaborate directly with public sector counterparts to quickly build full-stack, AI applications, to solve their most pressing challenges and achieve meaningful impact for citizens. At Scale, we’re not just building AI solutions—we’re enabling the public sector to transform their operations and better serve citizens through cutting-edge technology. If you’re ready to shape the future of AI in the public sector and be a founding member of our team, we’d love to hear from you. You will: Serve as the lead technical strategist for public sector engagements, converting ambiguous mission requirements into robust architectural roadmaps and guiding onsite implementation. Architect the fundamental frameworks for production-grade AI applications, setting the gold standard for how interactive UIs, backend systems, and AI models are integrated at scale to deliver reliable outcomes. Guide the evolution of cloud infrastructure, ensuring security, global scalability, and long-term system integrity across all environments. Direct the development of core platforms and shared services, ensuring they solve cross-cutting needs for diverse global client use cases. Partner with cross-functional leadership to steer the technical roadmap, mentoring senior and junior staff and ensuring all products align with a cohesive, future-proof technical architecture. Bridge the gap between the field and the core platform by turning real-world client lessons into the reusable patterns that power the entire engineering team. Ideally you’d have: Masters or Phd in Computer Science or equivale