376 to 400 of 485 API Design Jobs

Rigor: Balancing fast iteration with the high standards required in a regulated fintech environment, championing best practices in testing and observability. 🤝 Collaboration: Working closely with the CTO, product, and design teams to translate user needs into technical solutions. What They're Looking For ✅ Full Stack Proficiency: Strong fundamentals with comfort building both user interfaces and backend services using TypeScript … React, and Node.js/NestJS. 🚀 Mobile Focus: Proficiency with React Native to lead the build-out of the mobile product. 💾 Database & Cloud: Experience with relational databases (Postgres preferred), clean API design, and cloud infrastructure (AWS, Docker, CI/CD). 🔒 Security Mindset: Familiarity with secure coding and data privacy principles, ideally within fintech or other regulated domains. 💡 Mission More ❯

Rigor: Balancing fast iteration with the high standards required in a regulated fintech environment, championing best practices in testing and observability. 🤝 Collaboration: Working closely with the CTO, product, and design teams to translate user needs into technical solutions. What They're Looking For ✅ Full Stack Proficiency: Strong fundamentals with comfort building both user interfaces and backend services using TypeScript … React, and Node.js/NestJS. 🚀 Mobile Focus: Proficiency with React Native to lead the build-out of the mobile product. 💾 Database & Cloud: Experience with relational databases (Postgres preferred), clean API design, and cloud infrastructure (AWS, Docker, CI/CD). 🔒 Security Mindset: Familiarity with secure coding and data privacy principles, ideally within fintech or other regulated domains. 💡 Mission More ❯

Rigor: Balancing fast iteration with the high standards required in a regulated fintech environment, championing best practices in testing and observability. 🤝 Collaboration: Working closely with the CTO, product, and design teams to translate user needs into technical solutions. What They're Looking For ✅ Full Stack Proficiency: Strong fundamentals with comfort building both user interfaces and backend services using TypeScript … React, and Node.js/NestJS. 🚀 Mobile Focus: Proficiency with React Native to lead the build-out of the mobile product. 💾 Database & Cloud: Experience with relational databases (Postgres preferred), clean API design, and cloud infrastructure (AWS, Docker, CI/CD). 🔒 Security Mindset: Familiarity with secure coding and data privacy principles, ideally within fintech or other regulated domains. 💡 Mission More ❯

Rigor: Balancing fast iteration with the high standards required in a regulated fintech environment, championing best practices in testing and observability. 🤝 Collaboration: Working closely with the CTO, product, and design teams to translate user needs into technical solutions. What They're Looking For ✅ Full Stack Proficiency: Strong fundamentals with comfort building both user interfaces and backend services using TypeScript … React, and Node.js/NestJS. 🚀 Mobile Focus: Proficiency with React Native to lead the build-out of the mobile product. 💾 Database & Cloud: Experience with relational databases (Postgres preferred), clean API design, and cloud infrastructure (AWS, Docker, CI/CD). 🔒 Security Mindset: Familiarity with secure coding and data privacy principles, ideally within fintech or other regulated domains. 💡 Mission More ❯

join them at inception of the project. This is a rare opportunity to influence best practices from the ground up, working directly with the FX Options trading desk to design and build a system that handles large volumes of market data in near real-time. Key Responsibilities: Design and develop scalable, high-performance systems using modern C# .Net … with a strong grasp of recent language features and .NET ecosystem Proven experience working with FX Options trading systems or directly with Options traders Solid understanding of systems integration, API design, and microservices architecture Experience handling large-scale market data in low-latency or real-time environments Hands-on experience converting monolithic applications into microservices Desirable: Exposure to More ❯

join them at inception of the project. This is a rare opportunity to influence best practices from the ground up, working directly with the FX Options trading desk to design and build a system that handles large volumes of market data in near real-time. Key Responsibilities: Design and develop scalable, high-performance systems using modern C# .Net … with a strong grasp of recent language features and .NET ecosystem Proven experience working with FX Options trading systems or directly with Options traders Solid understanding of systems integration, API design, and microservices architecture Experience handling large-scale market data in low-latency or real-time environments Hands-on experience converting monolithic applications into microservices Desirable: Exposure to More ❯

join them at inception of the project. This is a rare opportunity to influence best practices from the ground up, working directly with the FX Options trading desk to design and build a system that handles large volumes of market data in near real-time. Key Responsibilities: Design and develop scalable, high-performance systems using modern C# .Net … with a strong grasp of recent language features and .NET ecosystem Proven experience working with FX Options trading systems or directly with Options traders Solid understanding of systems integration, API design, and microservices architecture Experience handling large-scale market data in low-latency or real-time environments Hands-on experience converting monolithic applications into microservices Desirable: Exposure to More ❯

join them at inception of the project. This is a rare opportunity to influence best practices from the ground up, working directly with the FX Options trading desk to design and build a system that handles large volumes of market data in near real-time. Key Responsibilities: Design and develop scalable, high-performance systems using modern C# .Net … with a strong grasp of recent language features and .NET ecosystem Proven experience working with FX Options trading systems or directly with Options traders Solid understanding of systems integration, API design, and microservices architecture Experience handling large-scale market data in low-latency or real-time environments Hands-on experience converting monolithic applications into microservices Desirable: Exposure to More ❯

join them at inception of the project. This is a rare opportunity to influence best practices from the ground up, working directly with the FX Options trading desk to design and build a system that handles large volumes of market data in near real-time. Key Responsibilities: Design and develop scalable, high-performance systems using modern C# .Net … with a strong grasp of recent language features and .NET ecosystem Proven experience working with FX Options trading systems or directly with Options traders Solid understanding of systems integration, API design, and microservices architecture Experience handling large-scale market data in low-latency or real-time environments Hands-on experience converting monolithic applications into microservices Desirable: Exposure to More ❯

the business. Responsibilities: Provide project and delivery assurance across key technology and business initiatives Evaluate strategic alignment and ensure execution aligns with business intent Assess third-party risks, including API design, governance, and integration points Review and challenge SLAs and performance measures to ensure commercial relevance Lead assurance reviews over technology platforms, applications, and infrastructure Apply data analytics … outcomes Technically curious and confident engaging with engineers, data scientists, and delivery leads Familiar with Agile, DevOps, project governance, and third-party management Knowledgeable about performance measurement frameworks and API-related risks Experienced in (or curious about) agentic AI, data visualisation, and analytics If you are ready to combine technical depth with strategic impact and provide insights that drive More ❯

the business. Responsibilities: Provide project and delivery assurance across key technology and business initiatives Evaluate strategic alignment and ensure execution aligns with business intent Assess third-party risks, including API design, governance, and integration points Review and challenge SLAs and performance measures to ensure commercial relevance Lead assurance reviews over technology platforms, applications, and infrastructure Apply data analytics … outcomes Technically curious and confident engaging with engineers, data scientists, and delivery leads Familiar with Agile, DevOps, project governance, and third-party management Knowledgeable about performance measurement frameworks and API-related risks Experienced in (or curious about) agentic AI, data visualisation, and analytics If you are ready to combine technical depth with strategic impact and provide insights that drive More ❯

the business. Responsibilities: Provide project and delivery assurance across key technology and business initiatives Evaluate strategic alignment and ensure execution aligns with business intent Assess third-party risks, including API design, governance, and integration points Review and challenge SLAs and performance measures to ensure commercial relevance Lead assurance reviews over technology platforms, applications, and infrastructure Apply data analytics … outcomes Technically curious and confident engaging with engineers, data scientists, and delivery leads Familiar with Agile, DevOps, project governance, and third-party management Knowledgeable about performance measurement frameworks and API-related risks Experienced in (or curious about) agentic AI, data visualisation, and analytics If you are ready to combine technical depth with strategic impact and provide insights that drive More ❯

fast to take things to the next level. Youll join as a Senior Backend Engineer , taking ownership of complex Python/Django services that power enterprise decarbonisation. Expect to design elegant APIs, tackle data-heavy challenges, and collaborate closely with sustainability experts and product teams. What makes this special? High-performance engineering team smart, passionate, and collaborative Big mission …/CD, and plenty of greenfield challenges Youll be a great fit if you bring: 7+ years backend experience (Python expertise essential) Strong knowledge of Django (or similar) and API design Experience scaling apps, with an eye for performance and reliability A proactive, problem-solving mindset and love for collaboration Enjoy a collaborative, chic, and modern office environment More ❯

with Meraki APIs and other infrastructure systems to surface network and sensor insights Run proofs of concept for new in-restaurant technology such as kiosks or next-generation POS Design scalable configuration frameworks to support new hardware and future rollouts Contribute to incident response and ensure system reliability Partner with Operations and suppliers to enable smooth rollouts and minimise … and PowerShell for Windows-based automation and device integration Expert-level skills in TypeScript and Node.js Infrastructure as Code ( Terraform ) and CI/CD pipeline experience Solid understanding of API design and distributed system architecture Experience building modern UIs with Next.js or React Knowledge of networked devices , hardware APIs , and device provisioning Familiarity with Windows device management and More ❯

with Meraki APIs and other infrastructure systems to surface network and sensor insights Run proofs of concept for new in-restaurant technology such as kiosks or next-generation POS Design scalable configuration frameworks to support new hardware and future rollouts Contribute to incident response and ensure system reliability Partner with Operations and suppliers to enable smooth rollouts and minimise … and PowerShell for Windows-based automation and device integration Expert-level skills in TypeScript and Node.js Infrastructure as Code ( Terraform ) and CI/CD pipeline experience Solid understanding of API design and distributed system architecture Experience building modern UIs with Next.js or React Knowledge of networked devices , hardware APIs , and device provisioning Familiarity with Windows device management and More ❯

execute against both short-term and long-term roadmaps. Work in a variety of languages and technologies, including Ruby, Java and Typescript. Provide hands-on technical leadership (architecture/design, vision/direction/requirements setting, and incident response processes) for team members. Work with leaders across the company to create and drive toward the longer term vision of … are a bonus, not a requirement. Minimum requirements 10+ years of technical production experience 5+ years in a strategic technical leadership role Experience leading engineering team(s) working on API design, abstractions, frameworks, or client libraries (e.g. building internal or external developer products). Proven track record of delivering pragmatic solutions that accelerate business growth Ability to adjust More ❯

in tight cycles. This is an early-stage, hands-on role with significant autonomy and responsibility to drive backend product development, collaborating closely with founders, creators, and product/design to turn lean specs into reliable, scalable services. Responsibilities Implement features end-to-end on the backend (APIs → data models → integrations) and maintain quality while moving fast. Run tight … guardrails). Essential Requirements 3-6+ years building production backends/services , with shipped work and clear ownership. Strong Python (FastAPI) and database skills ( PostgreSQL/MongoDB ); solid API design fundamentals. Familiarity with AWS serverless patterns and Docker for bespoke services; basic CI/CD concepts. Comfortable with Redis (caching/sessions) and common queue/messaging More ❯

in tight cycles. This is an early-stage, hands-on role with significant autonomy and responsibility to drive backend product development, collaborating closely with founders, creators, and product/design to turn lean specs into reliable, scalable services. Responsibilities Implement features end-to-end on the backend (APIs → data models → integrations) and maintain quality while moving fast. Run tight … guardrails). Essential Requirements 3-6+ years building production backends/services , with shipped work and clear ownership. Strong Python (FastAPI) and database skills ( PostgreSQL/MongoDB ); solid API design fundamentals. Familiarity with AWS serverless patterns and Docker for bespoke services; basic CI/CD concepts. Comfortable with Redis (caching/sessions) and common queue/messaging More ❯

in tight cycles. This is an early-stage, hands-on role with significant autonomy and responsibility to drive backend product development, collaborating closely with founders, creators, and product/design to turn lean specs into reliable, scalable services. Responsibilities Implement features end-to-end on the backend (APIs → data models → integrations) and maintain quality while moving fast. Run tight … guardrails). Essential Requirements 3-6+ years building production backends/services , with shipped work and clear ownership. Strong Python (FastAPI) and database skills ( PostgreSQL/MongoDB ); solid API design fundamentals. Familiarity with AWS serverless patterns and Docker for bespoke services; basic CI/CD concepts. Comfortable with Redis (caching/sessions) and common queue/messaging More ❯

in tight cycles. This is an early-stage, hands-on role with significant autonomy and responsibility to drive backend product development, collaborating closely with founders, creators, and product/design to turn lean specs into reliable, scalable services. Responsibilities Implement features end-to-end on the backend (APIs → data models → integrations) and maintain quality while moving fast. Run tight … guardrails). Essential Requirements 3-6+ years building production backends/services , with shipped work and clear ownership. Strong Python (FastAPI) and database skills ( PostgreSQL/MongoDB ); solid API design fundamentals. Familiarity with AWS serverless patterns and Docker for bespoke services; basic CI/CD concepts. Comfortable with Redis (caching/sessions) and common queue/messaging More ❯

in tight cycles. This is an early-stage, hands-on role with significant autonomy and responsibility to drive backend product development, collaborating closely with founders, creators, and product/design to turn lean specs into reliable, scalable services. Responsibilities Implement features end-to-end on the backend (APIs → data models → integrations) and maintain quality while moving fast. Run tight … guardrails). Essential Requirements 3-6+ years building production backends/services , with shipped work and clear ownership. Strong Python (FastAPI) and database skills ( PostgreSQL/MongoDB ); solid API design fundamentals. Familiarity with AWS serverless patterns and Docker for bespoke services; basic CI/CD concepts. Comfortable with Redis (caching/sessions) and common queue/messaging More ❯

Manchester) Up to £160,000 + Pension/Bonus Join a leading financial technology and trading organisation driving innovation in electronic markets. As an eFX Software Engineer, you'll design and deliver high-performance, low-latency trading solutions that underpin mission-critical systems. This role offers the chance to work on cutting-edge technology where speed, scalability, and resilience … are key. About the Role Lead the design and development of secure, high-performance eFX systems Define and evolve Java patterns and techniques optimised for ultra-low latency ( Architect fault-tolerant, scalable trading systems Influence technical strategy, architecture, and product roadmaps Collaborate with multiple teams to deliver best-in-class E-trading platforms Ensure all solutions meet security, compliance … and performance standards What You'll Bring Strong experience in software engineering, architecture, and database design Expert-level Java development, including low-GC and lock-free patterns Proven background in FX trading systems, pricing, and risk management Deep understanding of CPU architecture, cache optimisation, and Linux performance tuning Expertise in networking and messaging (TCP, UDP, Multicast, FIX) Knowledge of More ❯

Manchester) Up to £160,000 + Pension/Bonus Join a leading financial technology and trading organisation driving innovation in electronic markets. As an eFX Software Engineer, you’ll design and deliver high-performance, low-latency trading solutions that underpin mission-critical systems. This role offers the chance to work on cutting-edge technology where speed, scalability, and resilience … are key. About the Role Lead the design and development of secure, high-performance eFX systems Define and evolve Java patterns and techniques optimised for ultra-low latency (<40μs) Architect fault-tolerant, scalable trading systems Influence technical strategy, architecture, and product roadmaps Collaborate with multiple teams to deliver best-in-class E-trading platforms Ensure all solutions meet security … compliance, and performance standards What You’ll Bring Strong experience in software engineering, architecture, and database design Expert-level Java development, including low-GC and lock-free patterns Proven background in FX trading systems, pricing, and risk management Deep understanding of CPU architecture, cache optimisation, and Linux performance tuning Expertise in networking and messaging (TCP, UDP, Multicast, FIX) Knowledge More ❯

Manchester) Up to £160,000 + Pension/Bonus Join a leading financial technology and trading organisation driving innovation in electronic markets. As an eFX Software Engineer, you’ll design and deliver high-performance, low-latency trading solutions that underpin mission-critical systems. This role offers the chance to work on cutting-edge technology where speed, scalability, and resilience … are key. About the Role Lead the design and development of secure, high-performance eFX systems Define and evolve Java patterns and techniques optimised for ultra-low latency (<40μs) Architect fault-tolerant, scalable trading systems Influence technical strategy, architecture, and product roadmaps Collaborate with multiple teams to deliver best-in-class E-trading platforms Ensure all solutions meet security … compliance, and performance standards What You’ll Bring Strong experience in software engineering, architecture, and database design Expert-level Java development, including low-GC and lock-free patterns Proven background in FX trading systems, pricing, and risk management Deep understanding of CPU architecture, cache optimisation, and Linux performance tuning Expertise in networking and messaging (TCP, UDP, Multicast, FIX) Knowledge More ❯

Manchester) Up to £160,000 + Pension/Bonus Join a leading financial technology and trading organisation driving innovation in electronic markets. As an eFX Software Engineer, you’ll design and deliver high-performance, low-latency trading solutions that underpin mission-critical systems. This role offers the chance to work on cutting-edge technology where speed, scalability, and resilience … are key. About the Role Lead the design and development of secure, high-performance eFX systems Define and evolve Java patterns and techniques optimised for ultra-low latency (<40μs) Architect fault-tolerant, scalable trading systems Influence technical strategy, architecture, and product roadmaps Collaborate with multiple teams to deliver best-in-class E-trading platforms Ensure all solutions meet security … compliance, and performance standards What You’ll Bring Strong experience in software engineering, architecture, and database design Expert-level Java development, including low-GC and lock-free patterns Proven background in FX trading systems, pricing, and risk management Deep understanding of CPU architecture, cache optimisation, and Linux performance tuning Expertise in networking and messaging (TCP, UDP, Multicast, FIX) Knowledge More ❯