976 to 1,000 of 2,507 Full Stack Engineer Jobs

Job Title: Senior QA Engineer lll Location: Remote Duration - Cont Type: Contract to hire Hourly rate on w2: $50-60 We are seeking a Senior QA Engineer with strong experience testing full stack and SaaS applications, as well as mentoring QA teams. This role will be responsible for designing and executing comprehensive … QA processes, mentoring team members, and ensuring the quality of complex distributed systems that process high volumes of information daily. Responsibilities Design, implement, and maintain test plans for full stack applications (UI, API, backend, and integrations). Develop and execute manual and automated tests to ensure quality at every layer of the stack. Lead end-to … best practices for SaaS application testing, including multi-tenant, role-based access, data integrity, and upgrade paths. Requirements 7+ years of QA engineering experience, including direct work with full stack and SaaS platforms. Strong understanding of web technologies (HTTP/S, REST APIs, frontend frameworks, databases, microservices). Hands-on experience writing automated tests (e.g., Selenium More ❯

impactful product, build AI-powered features & workflows, and natively blend stablecoin experiences with real-world banking, credit, and payments services for consumers. This role will grow into a full-time position. You’ll bring strong problem-solving skills, a collaborative spirit, and a passion for building robust, scalable, and user-friendly web applications. You’ll design, develop, and … occasional in-office, as needed. *How to apply:* https://welcome.lendkoi.com/head-of-engineering *Qualifications* * Technical leadership experience: VP of engineering, CTO, solutions architect, staff software engineer, or lead full-stack developer. * 6+ years of full-stack experience, including with consumer applications. * Strong proficiency with TypeScript, Node.js, Python … New York interview, and references required. Job Type: Part-time Application Question(s): * Are you located in New York, New Jersey, or Connecticut? Education: * Bachelor's (Required) Experience: * Full-stack development: 6 years (Required) Ability to Commute: * New York, NY 10036 (Required) Work Location: Hybrid remote in New York, NY 10036 Remote working/work at More ❯

impactful product, build AI-powered features & workflows, and natively blend stablecoin experiences with real-world banking, credit, and payments services for consumers. This role will grow into a full-time position. You’ll bring strong problem-solving skills, a collaborative spirit, and a passion for building robust, scalable, and user-friendly web applications. You’ll design, develop, and … occasional in-office, as needed. *How to apply:* https://welcome.lendkoi.com/head-of-engineering *Qualifications* * Technical leadership experience: VP of engineering, CTO, solutions architect, staff software engineer, or lead full-stack developer. * 6+ years of full-stack experience, including with consumer applications. * Strong proficiency with TypeScript, Node.js, Python … New York interview, and references required. Job Type: Part-time Application Question(s): * Are you located in New York, New Jersey, or Connecticut? Education: * Bachelor's (Required) Experience: * Full-stack development: 6 years (Required) Ability to Commute: * New York, NY 10036 (Required) Work Location: Hybrid remote in New York, NY 10036 Remote working/work at More ❯

Senior Full Stack/Backend Developer (Contract – AI-First) We’re seeking an AI-first Senior Full Stack or Backend Developer to play a key role in shaping the backend of our next-generation B2C platform. You’ll work closely with our front-end team to design and deliver robust, scalable APIs … optimization, and security. Proven AI-assisted development workflow. Ability to work autonomously within established technical frameworks. Nice to Have: React/Next.js, Azure, Payload CMS, microservices architecture. Contract: Full-time, initial term 3–6 months Start: ASAP Location: Liverpool - Hybrid To apply, please send your CV, AI tool usage examples, day rate, and references. Senior Full Stack/Backend Developer (Contract – AI-First More ❯

Senior C#.NET Full Stack Developer - Remote - Salary £65k (DOE) We have partnered with a fast-growing Insurtech company transforming the way insurance and technology work together. We're looking for a talented Senior C# .NET Full Stack Developer to help drive their product innovation and growth. In this role, you'll design … development and testing of responsive HTML email templates. Collaborate effectively with designers, product owners, and stakeholders. Requirements 6+ years of commercial experience as a C# .NET developer in full-stack or similar roles. Strong experience in frontend development (HTML, CSS, JS) and Vue.js . Solid experience building and consuming Web APIs . Experience developing cloud-based More ❯

Founding Product Engineer | AI | London/Hybrid | up to £120,000 base + equity Our client is looking for a Founding Product Engineer to help solve one of the biggest and most complex challenges in AI. This role would suit a Product Engineer who blends strong software engineering credentials with product thinking and a … high-agency mindset. The problem they have identified has earned them serious investment and they would love a full stack engineer to join them in transforming the AI space. Why join: Impact: Ship core product used by the world’s top dev teams Team: Small, elite group including Serial and YC founders and FAANG … Engineers Environment: High trust, high bar, quick iterations What we’re looking for: 4+ years of commercial software engineering experience, within startup or scaled tech environments Full‐stack with strong TypeScript who is comfortable jumping between frontend and backend Startup mindset: high agency, initiative, and ownership Product sense: can frame problems, propose pragmatic solutions and make More ❯

Founding Product Engineer | AI | London/Hybrid | up to £120,000 base + equity Our client is looking for a Founding Product Engineer to help solve one of the biggest and most complex challenges in AI. This role would suit a Product Engineer who blends strong software engineering credentials with product thinking and a … high-agency mindset. The problem they have identified has earned them serious investment and they would love a full stack engineer to join them in transforming the AI space. Why join: Impact: Ship core product used by the world’s top dev teams Team: Small, elite group including Serial and YC founders and FAANG … Engineers Environment: High trust, high bar, quick iterations What we’re looking for: 4+ years of commercial software engineering experience, within startup or scaled tech environments Full‐stack with strong TypeScript who is comfortable jumping between frontend and backend Startup mindset: high agency, initiative, and ownership Product sense: can frame problems, propose pragmatic solutions and make More ❯

Founding Product Engineer | AI | London/Hybrid | up to £120,000 base + equity Our client is looking for a Founding Product Engineer to help solve one of the biggest and most complex challenges in AI. This role would suit a Product Engineer who blends strong software engineering credentials with product thinking and a … high-agency mindset. The problem they have identified has earned them serious investment and they would love a full stack engineer to join them in transforming the AI space. Why join: Impact: Ship core product used by the world’s top dev teams Team: Small, elite group including Serial and YC founders and FAANG … Engineers Environment: High trust, high bar, quick iterations What we’re looking for: 4+ years of commercial software engineering experience, within startup or scaled tech environments Full‐stack with strong TypeScript who is comfortable jumping between frontend and backend Startup mindset: high agency, initiative, and ownership Product sense: can frame problems, propose pragmatic solutions and make More ❯

Founding Product Engineer | AI | London/Hybrid | up to £120,000 base + equity Our client is looking for a Founding Product Engineer to help solve one of the biggest and most complex challenges in AI. This role would suit a Product Engineer who blends strong software engineering credentials with product thinking and a … high-agency mindset. The problem they have identified has earned them serious investment and they would love a full stack engineer to join them in transforming the AI space. Why join: Impact: Ship core product used by the world’s top dev teams Team: Small, elite group including Serial and YC founders and FAANG … Engineers Environment: High trust, high bar, quick iterations What we’re looking for: 4+ years of commercial software engineering experience, within startup or scaled tech environments Full‐stack with strong TypeScript who is comfortable jumping between frontend and backend Startup mindset: high agency, initiative, and ownership Product sense: can frame problems, propose pragmatic solutions and make More ❯

Founding Product Engineer | AI | London/Hybrid | up to £120,000 base + equity Our client is looking for a Founding Product Engineer to help solve one of the biggest and most complex challenges in AI. This role would suit a Product Engineer who blends strong software engineering credentials with product thinking and a … high-agency mindset. The problem they have identified has earned them serious investment and they would love a full stack engineer to join them in transforming the AI space. Why join: Impact: Ship core product used by the world’s top dev teams Team: Small, elite group including Serial and YC founders and FAANG … Engineers Environment: High trust, high bar, quick iterations What we’re looking for: 4+ years of commercial software engineering experience, within startup or scaled tech environments Full‐stack with strong TypeScript who is comfortable jumping between frontend and backend Startup mindset: high agency, initiative, and ownership Product sense: can frame problems, propose pragmatic solutions and make More ❯

mechanisms Rapidly design and build cloud-native prototypes of customer applications onto with modern and automated toolchains, and new DevOps ways of working. Lead software strategy across the full-stack to redesign the software architecture and embed modern software development life cycle processes Build and present an application demo portal, showcasing the latest and greatest in … driven approaches to application development and management, helping our customers embed AI, ML and automation into process flows Collaborate with sales, pre-sales and cloud teams across the full customer life cycle to be an expert on engineering modern applications Work with our tooling partners to bring modern toolchains to our customers to rapidly visualise software applications Skills …/Experience Experience, designing, building and operating modern applications Hands-on expertise with a tech stack consisting of docker, containerisation, Terraform, Azure, IaaS, PaaS, microservices and API management Proficiency in modern software development practices, including Agile methodologies, DevOps, and CI/CD pipelines Expert understanding of cloud technologies, including IaaS, PaaS, and FaaS, as well as cloud-native More ❯

G enerosity, R espect, I nnovation, T eamwork, and GRIT, we're dedicated to maintaining a supportive work environment that celebrates diversity and empowers everyone to reach their full potential. As an industry-leading e-commerce company specializing in HVAC, plumbing, heating, and electrical supplies since 2004, we strive to foster growth while providing the best possible experience … for our customers. We are looking for a Backend Engineer to join our IT Team. This individual will report into our Full Stack Team Lead and have the opportunity to work on impactful projects that enhance our e-commerce platform and internal operations, while honing your skills in backend and full stack … activities. We reimburse reasonable and necessary travel expenses, and you're also welcome to work on-site anytime beyond these visits - our doors are always open. Role Type: Full-Time, Exempt Location: Remote Schedule: Monday through Friday, 8:00 a.m. to 5:00 p.m. with time zone flexibility Base Salary: $95,000 - $115,000 per year Responsibilities: Collaborate More ❯

G enerosity, R espect, I nnovation, T eamwork, and GRIT, we're dedicated to maintaining a supportive work environment that celebrates diversity and empowers everyone to reach their full potential. As an industry-leading e-commerce company specializing in HVAC, plumbing, heating, and electrical supplies since 2004, we strive to foster growth while providing the best possible experience … for our customers. We are looking for a Backend Engineer to join our IT Team. This individual will report into our Full Stack Team Lead and have the opportunity to work on impactful projects that enhance our e-commerce platform and internal operations, while honing your skills in backend and full stack … activities. We reimburse reasonable and necessary travel expenses, and you're also welcome to work on-site anytime beyond these visits - our doors are always open. Role Type: Full-Time, Exempt Location: Remote Schedule: Monday through Friday, 8:00 a.m. to 5:00 p.m. with time zone flexibility Base Salary: $95,000 - $115,000 per year Responsibilities: Collaborate More ❯

intelligent devices are redefining possibilities in patient care, blending innovative design with real-world impact. As part of their continued growth, they are now seeking a highly skilled Full Stack Developer to join their growing team. This is a fantastic opportunity for an experienced engineer who enjoys working across the stack, contributing … Write clean, testable, and well-documented code following best practices. Contribute to architectural decisions and technical strategy as an early team member. Qualifications and Skills: 5+ years of full-stack development experience, ideally within startup or MedTech environments. Proficiency with Nuxt/Vue, NodeJS, TypeScript, PostgreSQL, and Redis. Hands-on experience developing mobile applications using Ionic More ❯

Senior Full Stack (Backend) Engineer | Build Scalable Systems at Speed We’re looking for a Senior Full Stack (Backend) Engineer who loves solving complex problems and building elegant, scalable systems that power real-world products. You’ll have the freedom to make architectural decisions, improve developer experience, and … experience teams Optimize systems for performance, scalability, and security Write clean, maintainable, and efficient code Stay current with new technologies and bring fresh ideas to the table Tech Stack Languages: Python, TypeScript Infrastructure: AWS (ECS, SQS, Parameter Store), Docker, GitHub Actions Data: Postgres, Redis Monitoring: LogFire, Sentry CI/CD: GitHub Actions About You 4+ years of experience … cloud infrastructure Hands-on experience with high-throughput systems and background job queues Passionate about clean code, strong abstractions, and great developer experience Comfortable taking ownership across the stack—from code to monitoring and deployment More ❯

Senior Full Stack (Backend) Engineer | Build Scalable Systems at Speed We’re looking for a Senior Full Stack (Backend) Engineer who loves solving complex problems and building elegant, scalable systems that power real-world products. You’ll have the freedom to make architectural decisions, improve developer experience, and … experience teams Optimize systems for performance, scalability, and security Write clean, maintainable, and efficient code Stay current with new technologies and bring fresh ideas to the table Tech Stack Languages: Python, TypeScript Infrastructure: AWS (ECS, SQS, Parameter Store), Docker, GitHub Actions Data: Postgres, Redis Monitoring: LogFire, Sentry CI/CD: GitHub Actions About You 4+ years of experience … cloud infrastructure Hands-on experience with high-throughput systems and background job queues Passionate about clean code, strong abstractions, and great developer experience Comfortable taking ownership across the stack—from code to monitoring and deployment More ❯

Senior Full Stack (Backend) Engineer | Build Scalable Systems at Speed We’re looking for a Senior Full Stack (Backend) Engineer who loves solving complex problems and building elegant, scalable systems that power real-world products. You’ll have the freedom to make architectural decisions, improve developer experience, and … experience teams Optimize systems for performance, scalability, and security Write clean, maintainable, and efficient code Stay current with new technologies and bring fresh ideas to the table Tech Stack Languages: Python, TypeScript Infrastructure: AWS (ECS, SQS, Parameter Store), Docker, GitHub Actions Data: Postgres, Redis Monitoring: LogFire, Sentry CI/CD: GitHub Actions About You 4+ years of experience … cloud infrastructure Hands-on experience with high-throughput systems and background job queues Passionate about clean code, strong abstractions, and great developer experience Comfortable taking ownership across the stack—from code to monitoring and deployment More ❯

Senior Full Stack (Backend) Engineer | Build Scalable Systems at Speed We’re looking for a Senior Full Stack (Backend) Engineer who loves solving complex problems and building elegant, scalable systems that power real-world products. You’ll have the freedom to make architectural decisions, improve developer experience, and … experience teams Optimize systems for performance, scalability, and security Write clean, maintainable, and efficient code Stay current with new technologies and bring fresh ideas to the table Tech Stack Languages: Python, TypeScript Infrastructure: AWS (ECS, SQS, Parameter Store), Docker, GitHub Actions Data: Postgres, Redis Monitoring: LogFire, Sentry CI/CD: GitHub Actions About You 4+ years of experience … cloud infrastructure Hands-on experience with high-throughput systems and background job queues Passionate about clean code, strong abstractions, and great developer experience Comfortable taking ownership across the stack—from code to monitoring and deployment More ❯

Senior Full Stack (Backend) Engineer | Build Scalable Systems at Speed We’re looking for a Senior Full Stack (Backend) Engineer who loves solving complex problems and building elegant, scalable systems that power real-world products. You’ll have the freedom to make architectural decisions, improve developer experience, and … experience teams Optimize systems for performance, scalability, and security Write clean, maintainable, and efficient code Stay current with new technologies and bring fresh ideas to the table Tech Stack Languages: Python, TypeScript Infrastructure: AWS (ECS, SQS, Parameter Store), Docker, GitHub Actions Data: Postgres, Redis Monitoring: LogFire, Sentry CI/CD: GitHub Actions About You 4+ years of experience … cloud infrastructure Hands-on experience with high-throughput systems and background job queues Passionate about clean code, strong abstractions, and great developer experience Comfortable taking ownership across the stack—from code to monitoring and deployment More ❯

Senior Full Stack (Backend) Engineer | Build Scalable Systems at Speed We’re looking for a Senior Full Stack (Backend) Engineer who loves solving complex problems and building elegant, scalable systems that power real-world products. You’ll have the freedom to make architectural decisions, improve developer experience, and … experience teams Optimize systems for performance, scalability, and security Write clean, maintainable, and efficient code Stay current with new technologies and bring fresh ideas to the table Tech Stack Languages: Python, TypeScript Infrastructure: AWS (ECS, SQS, Parameter Store), Docker, GitHub Actions Data: Postgres, Redis Monitoring: LogFire, Sentry CI/CD: GitHub Actions About You 4+ years of experience … cloud infrastructure Hands-on experience with high-throughput systems and background job queues Passionate about clean code, strong abstractions, and great developer experience Comfortable taking ownership across the stack—from code to monitoring and deployment More ❯

Senior Full Stack (Backend) Engineer | Build Scalable Systems at Speed We’re looking for a Senior Full Stack (Backend) Engineer who loves solving complex problems and building elegant, scalable systems that power real-world products. You’ll have the freedom to make architectural decisions, improve developer experience, and … experience teams Optimize systems for performance, scalability, and security Write clean, maintainable, and efficient code Stay current with new technologies and bring fresh ideas to the table Tech Stack Languages: Python, TypeScript Infrastructure: AWS (ECS, SQS, Parameter Store), Docker, GitHub Actions Data: Postgres, Redis Monitoring: LogFire, Sentry CI/CD: GitHub Actions About You 4+ years of experience … cloud infrastructure Hands-on experience with high-throughput systems and background job queues Passionate about clean code, strong abstractions, and great developer experience Comfortable taking ownership across the stack—from code to monitoring and deployment More ❯

Senior Full Stack (Backend) Engineer | Build Scalable Systems at Speed We’re looking for a Senior Full Stack (Backend) Engineer who loves solving complex problems and building elegant, scalable systems that power real-world products. You’ll have the freedom to make architectural decisions, improve developer experience, and … experience teams Optimize systems for performance, scalability, and security Write clean, maintainable, and efficient code Stay current with new technologies and bring fresh ideas to the table Tech Stack Languages: Python, TypeScript Infrastructure: AWS (ECS, SQS, Parameter Store), Docker, GitHub Actions Data: Postgres, Redis Monitoring: LogFire, Sentry CI/CD: GitHub Actions About You 4+ years of experience … cloud infrastructure Hands-on experience with high-throughput systems and background job queues Passionate about clean code, strong abstractions, and great developer experience Comfortable taking ownership across the stack—from code to monitoring and deployment More ❯

Senior Full Stack (Backend) Engineer | Build Scalable Systems at Speed We’re looking for a Senior Full Stack (Backend) Engineer who loves solving complex problems and building elegant, scalable systems that power real-world products. You’ll have the freedom to make architectural decisions, improve developer experience, and … experience teams Optimize systems for performance, scalability, and security Write clean, maintainable, and efficient code Stay current with new technologies and bring fresh ideas to the table Tech Stack Languages: Python, TypeScript Infrastructure: AWS (ECS, SQS, Parameter Store), Docker, GitHub Actions Data: Postgres, Redis Monitoring: LogFire, Sentry CI/CD: GitHub Actions About You 4+ years of experience … cloud infrastructure Hands-on experience with high-throughput systems and background job queues Passionate about clean code, strong abstractions, and great developer experience Comfortable taking ownership across the stack—from code to monitoring and deployment More ❯

Senior Full Stack (Backend) Engineer | Build Scalable Systems at Speed We’re looking for a Senior Full Stack (Backend) Engineer who loves solving complex problems and building elegant, scalable systems that power real-world products. You’ll have the freedom to make architectural decisions, improve developer experience, and … experience teams Optimize systems for performance, scalability, and security Write clean, maintainable, and efficient code Stay current with new technologies and bring fresh ideas to the table Tech Stack Languages: Python, TypeScript Infrastructure: AWS (ECS, SQS, Parameter Store), Docker, GitHub Actions Data: Postgres, Redis Monitoring: LogFire, Sentry CI/CD: GitHub Actions About You 4+ years of experience … cloud infrastructure Hands-on experience with high-throughput systems and background job queues Passionate about clean code, strong abstractions, and great developer experience Comfortable taking ownership across the stack—from code to monitoring and deployment More ❯

Senior Full Stack (Backend) Engineer | Build Scalable Systems at Speed Were looking for a Senior Full Stack (Backend) Engineer who loves solving complex problems and building elegant, scalable systems that power real-world products. Youll have the freedom to make architectural decisions, improve developer experience, and shape the … experience teams Optimize systems for performance, scalability, and security Write clean, maintainable, and efficient code Stay current with new technologies and bring fresh ideas to the table Tech Stack Languages: Python, TypeScript Infrastructure: AWS (ECS, SQS, Parameter Store), Docker, GitHub Actions Data: Postgres, Redis Monitoring: LogFire, Sentry CI/CD: GitHub Actions About You 4+ years of experience More ❯