24 of 24 Remote API Design Jobs in the South East

up-within a startup-style venture backed by the strength and stability of an established business. Key Responsibilities End-to-end development of high-quality, scalable SaaS platforms from design through deployment and maintenance. Architect and implement robust backend services primarily using Python and PostgreSQL. Develop and maintain responsive, performant front-end applications with TypeScript and modern frameworks (e.g. … development productivity and platform capabilities. Provide technical mentorship and leadership to development teams, fostering best practices in coding, testing, and deployment. Participate in code reviews, architecture discussions, and system design decisions. Troubleshoot and resolve complex technical issues across the full stack. Ensure software security, scalability, and performance are maintained at all times. Keep abreast of emerging technologies and industry … Proven expertise in full-stack development using: TypeScript (and JavaScript frameworks such as NextJS, Node, or Tailwind) Python (including frameworks like Django, Flask, or FastAPI) PostgreSQL and relational database design, optimisation, and maintenance. AI Development Tools such as Windsurf, Aider or Augment. Demonstrable experience building and scaling SaaS platforms in a production environment. Strong understanding and practical application of More ❯

Each Other The Role We are seeking a Full Stack Software Engineer with a strong focus on Java to join our growing engineering team. In this role, you’ll design, build, and maintain robust and scalable full-stack applications that power our automation and SaaS platforms. You’ll collaborate closely with product managers, designers, and fellow engineers to deliver … high-impact solutions that make automation smarter, faster, and more reliable. What You’ll Do Design, develop, and implement highly performant full-stack applications using Java and related technologies. Build and maintain scalable back-end services, APIs, and microservices. Develop responsive, intuitive front-end interfaces with modern frameworks. Translate product requirements into technical specifications. Participate in the full SDLC … planning, design, coding, testing, deployment, and support. Write clean, maintainable, well-documented code following best practices. Implement automated tests (unit, integration, and end-to-end) to ensure quality. Troubleshoot, debug, and resolve software defects and production issues. Contribute to architectural discussions to ensure scalability, security, and performance. Mentor junior engineers and foster a culture of continuous improvement. What You More ❯

Each Other The Role We are seeking a Full Stack Software Engineer with a strong focus on Java to join our growing engineering team. In this role, you’ll design, build, and maintain robust and scalable full-stack applications that power our automation and SaaS platforms. You’ll collaborate closely with product managers, designers, and fellow engineers to deliver … high-impact solutions that make automation smarter, faster, and more reliable. What You’ll Do Design, develop, and implement highly performant full-stack applications using Java and related technologies. Build and maintain scalable back-end services, APIs, and microservices. Develop responsive, intuitive front-end interfaces with modern frameworks. Translate product requirements into technical specifications. Participate in the full SDLC … planning, design, coding, testing, deployment, and support. Write clean, maintainable, well-documented code following best practices. Implement automated tests (unit, integration, and end-to-end) to ensure quality. Troubleshoot, debug, and resolve software defects and production issues. Contribute to architectural discussions to ensure scalability, security, and performance. Mentor junior engineers and foster a culture of continuous improvement. What You More ❯

looking for a Back End Developer who’s passionate about building scalable systems, optimising performance, and bringing great ideas to life through clean, reliable code. 💻 The Role You’ll design and maintain high-performance APIs, build data pipelines in Azure, and help evolve the backbone of our creator platform. What you’ll do: Design, develop, and maintain RESTful … efficient code. You have: 3–5 years of professional back-end development experience Strong C# and .NET Core/ASP.NET Core skills Experience with Azure cloud services Solid RESTful API design knowledge SQL expertise (T-SQL, optimisation, data modelling) Familiarity with Git and agile development (Bonus if you’ve worked with Docker, Kubernetes, Cosmos DB, or event-driven More ❯

looking for a Back End Developer who’s passionate about building scalable systems, optimising performance, and bringing great ideas to life through clean, reliable code. 💻 The Role You’ll design and maintain high-performance APIs, build data pipelines in Azure, and help evolve the backbone of our creator platform. What you’ll do: Design, develop, and maintain RESTful … efficient code. You have: 3–5 years of professional back-end development experience Strong C# and .NET Core/ASP.NET Core skills Experience with Azure cloud services Solid RESTful API design knowledge SQL expertise (T-SQL, optimisation, data modelling) Familiarity with Git and agile development (Bonus if you’ve worked with Docker, Kubernetes, Cosmos DB, or event-driven More ❯

reflects the great diversity of our real customers and users across the world. What You’ll Do Own our engineering stack from MVP to scale — backend, frontend, infra . Design architecture, choose tools, and set engineering standards. Work directly with early users to iterate quickly. Collaborate with the founding team on strategy, hiring, and scaling the tech team. Ship … high-quality, user-focused features (that change Oceans and planet) fast. What We’re Looking For 5+ years of backend expertise in Go including API design, microservices architecture, gRPC/REST services, and database design (PostgreSQL, Redis). Frontend proficiency with React/Next.js, responsive design, and modern JavaScript/TypeScript Cloud infrastructure knowledge including AWS … and opportunity. Expert in solving deep technical problems with customer outcomes top of mind. Ability to evaluate and make decisions based on a balanced assessment of key factors, including design, scalability, performance, technical debt and cost efficiency. Working highly collaboratively in a team environment. What We Offer Professional Impact & Growth Build a high-impact platform from emerging MVP to More ❯

reflects the great diversity of our real customers and users across the world. What You’ll Do Own our engineering stack from MVP to scale — backend, frontend, infra . Design architecture, choose tools, and set engineering standards. Work directly with early users to iterate quickly. Collaborate with the founding team on strategy, hiring, and scaling the tech team. Ship … high-quality, user-focused features (that change Oceans and planet) fast. What We’re Looking For 5+ years of backend expertise in Go including API design, microservices architecture, gRPC/REST services, and database design (PostgreSQL, Redis). Frontend proficiency with React/Next.js, responsive design, and modern JavaScript/TypeScript Cloud infrastructure knowledge including AWS … and opportunity. Expert in solving deep technical problems with customer outcomes top of mind. Ability to evaluate and make decisions based on a balanced assessment of key factors, including design, scalability, performance, technical debt and cost efficiency. Working highly collaboratively in a team environment. What We Offer Professional Impact & Growth Build a high-impact platform from emerging MVP to More ❯

reflects the great diversity of our real customers and users across the world. What You’ll Do Own our engineering stack from MVP to scale — backend, frontend, infra . Design architecture, choose tools, and set engineering standards. Work directly with early users to iterate quickly. Collaborate with the founding team on strategy, hiring, and scaling the tech team. Ship … high-quality, user-focused features (that change Oceans and planet) fast. What We’re Looking For 5+ years of backend expertise in Go including API design, microservices architecture, gRPC/REST services, and database design (PostgreSQL, Redis). Frontend proficiency with React/Next.js, responsive design, and modern JavaScript/TypeScript Cloud infrastructure knowledge including AWS … and opportunity. Expert in solving deep technical problems with customer outcomes top of mind. Ability to evaluate and make decisions based on a balanced assessment of key factors, including design, scalability, performance, technical debt and cost efficiency. Working highly collaboratively in a team environment. What We Offer Professional Impact & Growth Build a high-impact platform from emerging MVP to More ❯

Backend Engineer, Contractor | Python, FastAPI, Kubernetes, AWS | High-Throughput Data & API Platform, Scale-up | £575-725/day Outside IR35 | 6 Months+ | Hybrid, London or UK Remote Opportunity: We’re partnering with a rapidly scaling AI infrastructure company, building the backend systems that power complex data pipelines and real-time APIs for global clients. You’ll work on the … platform - engineering high-performance Python services with FastAPI, integrating deeply with Kubernetes-native infrastructure, and deploying at scale in AWS. This is a backend-first role where you’ll design robust APIs, optimise cloud workloads, and ensure the platform runs reliably under heavy load. What You’ll Be Doing for this Backend Engineer, Contractor | Python, FastAPI, Kubernetes, AWS | High … Throughput Data & API Platform, Scale-up | £575-725/day Outside IR35 | 6 Months+ | Hybrid, London or UK Remote Designing and building internal & public APIs in Python (FastAPI) for high-throughput environments Architecting services with reliability and scalability as core principles Deploying containerised workloads in AWS via Kubernetes and Terraform Collaborating closely with DevOps, ML, and product teams to More ❯

Backend Engineer, Contractor | Python, FastAPI, Kubernetes, AWS | High-Throughput Data & API Platform, Scale-up | £575-725/day Outside IR35 | 6 Months+ | Hybrid, London or UK Remote Opportunity: We’re partnering with a rapidly scaling AI infrastructure company, building the backend systems that power complex data pipelines and real-time APIs for global clients. You’ll work on the … platform - engineering high-performance Python services with FastAPI, integrating deeply with Kubernetes-native infrastructure, and deploying at scale in AWS. This is a backend-first role where you’ll design robust APIs, optimise cloud workloads, and ensure the platform runs reliably under heavy load. What You’ll Be Doing for this Backend Engineer, Contractor | Python, FastAPI, Kubernetes, AWS | High … Throughput Data & API Platform, Scale-up | £575-725/day Outside IR35 | 6 Months+ | Hybrid, London or UK Remote Designing and building internal & public APIs in Python (FastAPI) for high-throughput environments Architecting services with reliability and scalability as core principles Deploying containerised workloads in AWS via Kubernetes and Terraform Collaborating closely with DevOps, ML, and product teams to More ❯

Backend Engineer, Contractor | Python, FastAPI, Kubernetes, AWS | High-Throughput Data & API Platform, Scale-up | £575-725/day Outside IR35 | 6 Months+ | Hybrid, London or UK Remote Opportunity: We’re partnering with a rapidly scaling AI infrastructure company, building the backend systems that power complex data pipelines and real-time APIs for global clients. You’ll work on the … platform - engineering high-performance Python services with FastAPI, integrating deeply with Kubernetes-native infrastructure, and deploying at scale in AWS. This is a backend-first role where you’ll design robust APIs, optimise cloud workloads, and ensure the platform runs reliably under heavy load. What You’ll Be Doing for this Backend Engineer, Contractor | Python, FastAPI, Kubernetes, AWS | High … Throughput Data & API Platform, Scale-up | £575-725/day Outside IR35 | 6 Months+ | Hybrid, London or UK Remote Designing and building internal & public APIs in Python (FastAPI) for high-throughput environments Architecting services with reliability and scalability as core principles Deploying containerised workloads in AWS via Kubernetes and Terraform Collaborating closely with DevOps, ML, and product teams to More ❯

Backend Engineer, Contractor | Python, FastAPI, Kubernetes, AWS | High-Throughput Data & API Platform, Scale-up | £575-725/day Outside IR35 | 6 Months+ | Hybrid, London or UK Remote Opportunity: We’re partnering with a rapidly scaling AI infrastructure company, building the backend systems that power complex data pipelines and real-time APIs for global clients. You’ll work on the … platform - engineering high-performance Python services with FastAPI, integrating deeply with Kubernetes-native infrastructure, and deploying at scale in AWS. This is a backend-first role where you’ll design robust APIs, optimise cloud workloads, and ensure the platform runs reliably under heavy load. What You’ll Be Doing for this Backend Engineer, Contractor | Python, FastAPI, Kubernetes, AWS | High … Throughput Data & API Platform, Scale-up | £575-725/day Outside IR35 | 6 Months+ | Hybrid, London or UK Remote Designing and building internal & public APIs in Python (FastAPI) for high-throughput environments Architecting services with reliability and scalability as core principles Deploying containerised workloads in AWS via Kubernetes and Terraform Collaborating closely with DevOps, ML, and product teams to More ❯

influence: you’ll own the internal AI stack, mentor other engineers, and help define how AI and automation are adopted across the company. What You’ll Do Lead the design, architecture, and implementation of internal AI/ML systems for business intelligence. Build robust APIs, microservices, and data pipelines to power intelligent, data-driven tools. Develop retrieval-augmented generation … in Python plus at least one other backend language (TypeScript or Java preferred). Proven experience with AWS , containerisation, and infrastructure as code (Terraform, Docker). Solid understanding of API design, data modelling, and microservice architecture. Excellent communication skills, with the ability to translate technical outcomes into business impact. Tech Environment Languages: Python, TypeScript, Java AI/LLM More ❯

influence: you’ll own the internal AI stack, mentor other engineers, and help define how AI and automation are adopted across the company. What You’ll Do Lead the design, architecture, and implementation of internal AI/ML systems for business intelligence. Build robust APIs, microservices, and data pipelines to power intelligent, data-driven tools. Develop retrieval-augmented generation … in Python plus at least one other backend language (TypeScript or Java preferred). Proven experience with AWS , containerisation, and infrastructure as code (Terraform, Docker). Solid understanding of API design, data modelling, and microservice architecture. Excellent communication skills, with the ability to translate technical outcomes into business impact. Tech Environment Languages: Python, TypeScript, Java AI/LLM More ❯

influence: you’ll own the internal AI stack, mentor other engineers, and help define how AI and automation are adopted across the company. What You’ll Do Lead the design, architecture, and implementation of internal AI/ML systems for business intelligence. Build robust APIs, microservices, and data pipelines to power intelligent, data-driven tools. Develop retrieval-augmented generation … in Python plus at least one other backend language (TypeScript or Java preferred). Proven experience with AWS , containerisation, and infrastructure as code (Terraform, Docker). Solid understanding of API design, data modelling, and microservice architecture. Excellent communication skills, with the ability to translate technical outcomes into business impact. Tech Environment Languages: Python, TypeScript, Java AI/LLM More ❯

full-stack platform enabling sensitive data redaction and digital archiving. This is a chance to build innovative, scalable services that make a real-world impact across central government. Responsibilities: Design and develop secure, scalable full stack software solutions Work across 30% front-end development (React, TypeScript) and 70% back-end (Java, Spring Boot) Develop APIs, manage relational databases (PostgreSQL … documentation What we're looking for: 4+ years of experience in full stack development Expertise in Java, Spring Boot, and front-end technologies including React Strong skills in PostgreSQL, API design, and secure software deployment Comfortable working in hybrid environments using CI/CD, Docker, GitHub Actions Excellent problem-solving ability and communication skills Must be a British More ❯

right to close the advert earlier If we receive a high volume of applications. Fantastic opportunity to join our team of experienced Architects! Are you ready to lead architectural design for high-impact transformation programmes? At VWFS UK, we're on a mission to be The Key to Mobility - and we're looking for a Solution Architect to help … Digital Programme . You'll collaborate with UK and global teams to define, develop, and deliver innovative architecture solutions that drive real business outcomes. Responsibilities Lead solution architecture and design for a key business domain Develop high-level designs aligned with our architecture roadmaps and standards Define Solution Building Blocks that support our application and platform strategies Partner with … Technology, Security) Strong knowledge of enterprise integration, messaging models, and Agile/Lean architecture practices Experience with EA tools (LeanIX, Alfabet, Bizzdesign, Sparx EA) Cloud platform expertise (AWS, Azure), API design, event-driven and microservices architecture Understanding of SOAP, REST, and modern integration patterns Ability to produce high- and low-level technical designs for diverse audiences. Ideally, experience More ❯

Engineer Location: London (flexible remote working available) Contract Duration: Until 31st December 2025 Day Rate: £340 (Inside IR35) The Role We are looking for a skilled Data Engineer to design, develop, and deliver high-quality applications that meet evolving business needs. You will work across the full software development lifecycle, ensuring code quality, security, and scalability, while collaborating with … both technical and non-technical stakeholders in an Agile environment. Key Responsibilities Design, develop, test, and deploy robust applications. Ensure adherence to coding standards, security, and best practices. Build and integrate APIs with CRM, SaaS, and third-party platforms. Work with TypeScript, , , and AWS services (Lambda, API Gateway). Contribute to Agile, cross-functional teams across the SDLC. … Communicate effectively with stakeholders at all levels. Essential Skills & Experience Proficiency in TypeScript, , Hands-on experience with AWS services (e.g., Lambda, API Gateway). Strong background in API design and integration. Excellent communication and collaboration skills. More ❯

products. Our stack includes React, TypeScript, Next.js, and Google Cloud Platform (GCP). You’ll collaborate closely with designers to create exceptional user experiences, and with platform engineers to design and implement serverless APIs and background services that scale globally. This is a fantastic opportunity to join a rapidly growing startup as we enter the next phase of expansion. … as a software engineer (or equivalent commercial experience) Strong knowledge of React, TypeScript, and Next.js Experience with GCP or another cloud provider (e.g. AWS, Firebase, or Azure) Understanding of API design and asynchronous data handling Familiarity with CI/CD workflows and version control (Git) Strong problem-solving skills and attention to detail Comfortable working in a fast More ❯

products. Our stack includes React, TypeScript, Next.js, and Google Cloud Platform (GCP). You’ll collaborate closely with designers to create exceptional user experiences, and with platform engineers to design and implement serverless APIs and background services that scale globally. This is a fantastic opportunity to join a rapidly growing startup as we enter the next phase of expansion. … as a software engineer (or equivalent commercial experience) Strong knowledge of React, TypeScript, and Next.js Experience with GCP or another cloud provider (e.g. AWS, Firebase, or Azure) Understanding of API design and asynchronous data handling Familiarity with CI/CD workflows and version control (Git) Strong problem-solving skills and attention to detail Comfortable working in a fast More ❯

products. Our stack includes React, TypeScript, Next.js, and Google Cloud Platform (GCP). You’ll collaborate closely with designers to create exceptional user experiences, and with platform engineers to design and implement serverless APIs and background services that scale globally. This is a fantastic opportunity to join a rapidly growing startup as we enter the next phase of expansion. … as a software engineer (or equivalent commercial experience) Strong knowledge of React, TypeScript, and Next.js Experience with GCP or another cloud provider (e.g. AWS, Firebase, or Azure) Understanding of API design and asynchronous data handling Familiarity with CI/CD workflows and version control (Git) Strong problem-solving skills and attention to detail Comfortable working in a fast More ❯

and scalable solutions to support institutional trading platforms. Key Responsibilities: Develop and maintain low-latency eFX trading systems using high-performance Java (e.g., lock-free, low-GC techniques). Design and implement fault-tolerant system architectures with <40 microseconds one-way latency. Collaborate with cross-functional teams to define and evolve architecture and engineering practices. Influence technical strategy, ensuring … Familiarity with quantitative finance , algorithmic trading , and implementing controls in automated trading systems. Proven experience with DevOps , Agile methodologies , TDD , and use of CI/CD tools. Background in API design and automated testing frameworks. This is an excellent opportunity to work on complex, high-impact systems within a supportive and forward-thinking technology team. *Rates depend on More ❯

circa £80,000 to £90,000 per annum, depending on experienceLocation: fully remote, with occasional visits to Basingstoke We are looking for a skilled Full Stack Software Engineer to design and develop cutting-edge products with a focus on Python , PostgreSQL and front-end development. You'd be working in a flexible, remote-first environment, tackling interesting and complex … visits to Basingstoke as needed. Qualifications & Skills required: 5+ years of Python development Strong understanding of database systems (e.g. PostgreSQL) 5+ years of front-end development and deployment RESTful API design and development Demonstrable clean, maintainable code practices What you'd be doing: Take ownership of designing and delivering new capabilities within existing systems Requirements gathering and programme More ❯

This independent tech company on a mission to build products that just work . Our flagship app has been featured in major tech keynotes, nominated for international design awards, and praised for solving a universal problem: helping people look and sound their best online. From individual creators to global tech giants and leading universities, millions rely on our software … You care about the craft of engineering and the details that make software feel effortless Bonus points for Experience with modern front-end frameworks and web technologies Knowledge of API design, CI/CD, or cloud platforms (GCP, Cloudflare, GitHub, Azure) Familiarity with design tools such as Figma Comfort working with leadership or mentoring small teams What More ❯