1 to 25 of 50 Remote/Hybrid Permanent API Design Jobs

Senior Java Developer | Travel-tech Senior Java Developer | £300-400/day | Outside IR35 | Fully Remote within Europe

Hiring Organisation
VirtueTech Recruitment Group
Location
London, UK
Employment Type
Full-time
Work On Lead the evolution of a large-scale Java, Springboot, and MySQL, ensuring it can support a new universal architecture across multiple products. Design and implement new backend features, Unit Testing, API testing, and system improvements to support both web and mobile clients. Contribute to shared architecture … functional models, and backend design patterns to unify services across the organisation. Required Skills & Experience Senior-level expertise building and maintaining commercial, production-scale applications. Deep proficiency in: Java Springboot (server-side development, API design) MySQL (performance optimisation, complex queries, relational modelling) Experience architecting and maintaining distributed ...

Full Stack Engineer (Front End & Application experience) React + Typescript

Hiring Organisation
Deltabase
Location
United Kingdom
testing practices that protect key user flows. We’re looking for someone who enjoys high ownership, moves fast with quality, and works closely with design and Product Lead. React + TypeScript (must-have) Salary:£55,000–£75,000 base + equity (EMI options) Experience: 5+ years Location: UK-based … shaping how users interact with insights in the platform. As our team grows, you’ll also collaborate more closely with backend engineering to influence API design and application architecture, but the initial focus is on front end delivery and product feature ownership. Key Responsibilities Build and Own Product ...

Software Engineering Team Lead

Hiring Organisation
TalentHawk
Location
Swindon, UK
Employment Type
Full-time
perfect challenge for you. What You Will Do As the Lead Software Developer, you will balance hands-on coding with high-level architectural design and team leadership. Lead the Vision: Drive the technical roadmap to modernize legacy applications, transitioning them to sustainable, cloud-hosted platforms (Azure/AWS). … Architect & Build: Design and develop high-quality, scalable software solutions. You will own the technical design, ensuring robust architecture and code quality. Mentor & Coach: Provide technical guidance and mentorship to the development team, fostering a culture of collaboration and professional growth. Innovate: Champion the adoption of CI/ ...

Senior Software Engineer

Hiring Organisation
Maxwell Bond
Location
Bolton, Greater Manchester, UK
Employment Type
Full-time
Senior Backend Software Engineer (API, Cloud, Integration Focused) Location: Manchester/Hybrid (2 times a week in the office) Salary: Up to £75,000 (DOE) Sector: Tech For Good About the Opportunity How would you like to work on products designed to improve people's lives? This … Manchester as they embark on an ambitious roadmap of new products and services. They are looking for an experienced Backend Engineer with strong API development skills to help drive the next phase of their platform evolution. This role sits at the heart of their distributed architecture and plays ...

Senior Backend Engineer (Telco Integration Lead) Golang

Hiring Organisation
Ventula Consulting Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
seeking a foundational engineer to own our single greatest strategic asset: our unique, privileged access to network-level intelligence via the GSMA CAMARA API standard. This is our right to win, and you will be the engineer responsible for building the bridge to it. You will be the Critical … build the Security Signal Ingestion path, the secure, low-latency, and out-of-band data channel connecting to our founding members' network API gateways. ? Architect and implement a carrier-agnostic, vendor-agnostic connector layer to consume RESTful APIs from a heterogeneous global landscape of telco partners and IMS vendors ...

Lead Dotnet Developer

Hiring Organisation
Ocho FC
Location
Finaghy, Belfast, UK
Employment Type
Full-time
platforms * Overhaul monolithic systems into scalable APIs, microservices and event-driven architectures (Azure, AWS) * Work closely with UI and backend architects to align system design, scalability and performance * Introduce and promote AI-enabled engineering practices such as Copilot and GPT-based tooling for efficiency and quality improvements Technical Leadership … evolution, including cloud migration, containerisation (Kubernetes) and automation initiatives * Diagnose and resolve complex performance issues across large-scale systems * Champion software craftsmanship, TDD, BDD, design patterns and scalable coding practices Team Management & Engineering Culture * Manage and mentor cross-functional engineering teams, supporting growth, performance and delivery excellence * Build engineering ...

Mobile Backend Developer

Hiring Organisation
Queen Square Recruitment
Location
Bolton, Greater Manchester, UK
Employment Type
Full-time
stakeholders to align on requirements. Review technical documentation and suggest improvements. Promote best practices like TDD and BDD for maintainable, high-quality code. Apply design patterns for scalable, efficient, and reusable solutions. Ensure compliance with IT and Information Security policies. Your Profile Essential Skills & Experience: Strong experience in backend … development for mobile applications. Building distributed, scalable microservices using Java/Kotlin, Spring Boot, OAuth 2.0, and secure API design. Understanding of API design for mobile apps with event-driven architecture. Automation Testing. AWS services such as DynamoDB, S3, and Lambda. Strong analytical and problem-solving skills. ...

Expert Solution Architect

Hiring Organisation
Finastra
Location
Slough, Berkshire, UK
Employment Type
Full-time
thrives on solving complex challenges, driving innovation, and actively contributing to the development of scalable, high-performance enterprise applications. You'll lead architectural design while remaining deeply involved in implementation, reporting to the Head of Financial Messaging Engineering, working side-by-side with engineering teams to build robust solutions … Java 21+, Spring Boot, and Node.js. Expertise in backend technologies: Hibernate, Oracle DB/PostgreSQL, Kafka, Redis, Elastic Search/Apache Solr Proficiency in API design and development using REST and GraphQL. Solid understanding of secure coding practices Desired experience with DevOps tools and practices : CI/ ...

Technical Lead

Hiring Organisation
Oscar Associates (UK) Limited
Location
Liverpool, Merseyside, North West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£80,000
About the Role We're looking for a Technical Lead with deep expertise in the Microsoft technology stack to lead the design, development, and delivery of robust software solutions. This role combines hands-on technical leadership with mentorship and strategic oversight - ideal for someone who thrives at the intersection … architecture, coding, and team enablement. Key Responsibilities Lead technical design and development across projects built on the Microsoft stack (e.g., .NET Core, C#, Azure, SQL Server). Architect scalable, secure, and maintainable solutions aligned with business goals and best practices. Guide and mentor developers , performing code reviews and fostering ...

Dotnet Developer

Hiring Organisation
Lorien
Location
Manchester Area, United Kingdom
thrive in a collaborative, agile environment and want to make a real impact, we want to hear from you. What You’ll Do Design, develop, and maintain robust software applications using C# .NET. Write clean, scalable, and maintainable code that meets business and technical requirements. Collaborate closely with engineers … continuous improvement initiatives. Ensure solutions are reliable, secure, and effective, supporting the platform’s growth and performance. Help drive best practices in system design, test automation, CI/CD, and performance monitoring. What We’re Looking For Strong experience in C# .NET (Framework & Core), with a focus on high ...

.NET Developer - Perm - Gaming Hub

Hiring Organisation
Lorien
Location
Manchester, Lancashire, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 per annum
thrive in a collaborative, agile environment and want to make a real impact, we want to hear from you. What You'll Do Design, develop, and maintain robust software applications using C# .NET. Write clean, scalable, and maintainable code that meets business and technical requirements. Collaborate closely with engineers … continuous improvement initiatives. Ensure solutions are reliable, secure, and effective, supporting the platform's growth and performance. Help drive best practices in system design, test automation, CI/CD, and performance monitoring. What We're Looking For Strong experience in C# .NET (Framework & Core), with a focus on high ...

Vice President, Data Architect

Hiring Organisation
CLS Group
Location
Slough, Berkshire, UK
Employment Type
Full-time
week Job Overview: Data Architect plays a key role in CLS's architecture/technology division. Role requires broad knowledge in data architecture and design, with a focus on OLTP, Data Warehouse, Data Reporting, API capability and other database interfaces. This role involves collaborating with cross-functional teams … understand business requirements, providing technical leadership, and ensuring the design meet CLS architectural principles and security standards. Person should be strong technologist very aware of current developments in technology spectrum. Key Responsibilities: Author High Level Solution Design, Solutions Overview and Conceptual Architectures. Design and architect solutions based ...

Electronic Data Interchange Developer

Hiring Organisation
TRIA
Location
London, UK
Employment Type
Full-time
This role is critical in ensuring efficient electronic data exchange between the business and its partners, supporting operations through robust technical solutions. Key Responsibilities Design, develop, and maintain EDI workflows and API integrations for orders, invoices, and shipments. Collaborate with internal teams and external partners to ensure compliance … with EDI and API standards. Monitor and troubleshoot EDI/API transactions, ensuring accuracy and efficiency. Work with ERP and Order Management Systems to support end-to-end business processes. Maintain documentation and stay current with industry standards and best practices. Skills & Experience Strong knowledge of EDI protocols ...

Head of Engineering

Hiring Organisation
RedTech Recruitment
Location
Milton Keynes, Buckinghamshire, South East, United Kingdom
Employment Type
Professional qualifications
services and customer facing teams Highly advantageous experience includes: regulated environments, multi cloud operations, AI or ML integration, multi region deployments, education sector systems, API first platforms, legacy to modern engineering uplift Responsibilities for Head of Engineering: Lead and develop engineering managers and technical leads, embedding a culture … ensure delivery aligns with strategic priorities Collaborate with sales, customer experience, professional services and implementation teams to support customer transitions Embed security by design in collaboration with information security and compliance teams Provide architectural direction for SaaS migration, cloud native evolution, microservices, API design and AI engineering ...

Senior Product Manager

Hiring Organisation
Tiro Partners
Location
London, United Kingdom
Employment Type
Permanent
Salary
£60000 - £90000/annum
/API/Ecommerce/Product design/PDP/Tourism Role: Product Manager Compnay: Ecommerce Location: East London Onsite: Hybrid 2/3 day per week onsite Salary: up to £90,000 + Bonus We're looking for an experienced Product Manager to own and evolve core … shape platform-adjacent products including APIs, pricing models, and rules-based systems Develop product plan to boost CRO. Partner closely with engineers on API contracts, integrations, and architectural trade-offs Translate complex workflows and data flows into clear, scalable product structures Lead cross-functional discussions, aligning technical decisions with ...

Senior Product Manager

Hiring Organisation
Tiro Partners Limited
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £90,000 per annum
/API/Ecommerce/Product design/PDP/Tourism Role: Product Manager Compnay: Ecommerce Location: East London Onsite: Hybrid 2/3 day per week onsite Salary: up to £90,000 + Bonus We're looking for an experienced Product Manager to own and evolve core … shape platform-adjacent products including APIs, pricing models, and rules-based systems Develop product plan to boost CRO. Partner closely with engineers on API contracts, integrations, and architectural trade-offs Translate complex workflows and data flows into clear, scalable product structures Lead cross-functional discussions, aligning technical decisions with ...

Senior Software Engineer (PHP)

Hiring Organisation
True9
Location
United Kingdom
front-end teams in a fast-paced Agile environment. 🙌 You’ll thrive in this role if you have: Strong working experience in PHP, OOP, design patterns and principles, including SOLID Strong understanding of automated testing practices Expertise in performant MySQL and relational database design Hands-on experience with … API design and development Comfortable using modern tooling, including Docker, Git, PHPStan, PHPUnit and CI/CD Experience in Symfony Familiarity with cloud services, particularly AWS Experience in agile environments and contributing to team collaboration A proactive, solutions-oriented mindset and excellent communication skills 🛠️ The tech stack ...

Full Stack Engineer

Hiring Organisation
Ocho
Location
Finaghy, Belfast, UK
Employment Type
Full-time
features across modern frontend frameworks and Python-based backend services. This role suits someone who enjoys owning functionality across the full lifecycle, from API design to UI implementation, while working in a collaborative engineering culture with cloud-native tooling. What You'll Be Doing • Building and maintaining full … hosted components • Delivering user-facing features using Vue2+/React and related tooling • Ensuring quality through unit testing, automation, and structured reviews • Contributing to design discussions, improving existing systems, and supporting migration/upgrades • Collaborating closely with product, UX and engineering teams to ship reliable, maintainable features • Working across ...

Staff Software Engineer (Golang)

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
from scratch and creating platforms like Kafka. Being hands-on within a team delivering projects and solving tough tech problems. What You’ll Do Design and implement robust, scalable microservices and APIs in Go Lead the technical design of distributed data systems supporting research and clinical workflows Collaborate … distributed systems , data-intensive applications , and microservices architectures Experience with cloud environments (AWS, GCP, or Azure) and container orchestration (Kubernetes, Docker) Solid background in API design , data streaming , and event-driven architectures (Kafka, NATS, RabbitMQ) Proven leadership in technical design and mentoring Strong collaboration and communication skills ...

Solution Architect

Hiring Organisation
Henderson Scott
Location
North West London, London, United Kingdom
Employment Type
Permanent
Salary
£75,000
Pension, Support Leave Salary: £70,000 - £75,000 Per Annum. Overview A key role within the Technology function, responsible for shaping solution design for a major business programme. You'll ensure solutions align with architectural standards, support integration and reporting platforms, and work closely with engineering teams and suppliers … deliver high-quality, scalable, and secure outcomes. Key Responsibilities Lead solution design across major programme workstreams, aligning with architectural vision and technical standards. Support cloud and data governance; define best practice for integration and reporting. Maintain and enforce standards for API design, integration patterns, data schemas (including ...

Python Developers Wanted DV/SC Cleared

Hiring Organisation
Areti Group | B CorpTM
Location
London, UK
Employment Type
Full-time
preference. 2+ years experience in backend or full-stack software development Strong skills in Python, with exposure to JavaScript/TypeScript Experience with API design, microservices, and cloud deployments Solid understanding of software engineering best practices A passion for clean, maintainable code and performance Experience working in high ...

Python Developers Needed - DV/SC Cleared - Amazing Company

Hiring Organisation
Areti Group | B CorpTM
Location
London, UK
Employment Type
Full-time
preference. 2+ years experience in backend or full-stack software development Strong skills in Python, with exposure to JavaScript/TypeScript Experience with API design, microservices, and cloud deployments Solid understanding of software engineering best practices A passion for clean, maintainable code and performance Experience working in high ...

Technical Architect

Hiring Organisation
RED Global
Location
Slough, Berkshire, UK
Employment Type
Full-time
project team. Engage with senior stakeholders to influence technology decisions and ensure architectural integrity. Provide architectural recommendations and oversee implementation strategies. Contribute to solution design, documentation, and governance processes. Support data migration planning, integration, and interoperability considerations. Ensure compliance with security, resilience, and performance standards. Essential Skills & Experience … flow diagrams). Hands-on experience with major cloud platforms (preferably AWS), including Infrastructure as Code, networking, and security. Deep understanding of secure system design, authentication patterns, and observability. Familiarity with languages such as Ruby, Python, or Java, and modern practices (CI/CD, TDD, containerisation). Proven ability ...

Software Architect

Hiring Organisation
Uniting Ambition
Location
United Kingdom
Employment Type
Permanent
Salary
GBP Annual
High-Scale .NET Platform C#, .NET, Kafka, SQL, AWS, AI/ML, Event-Driven Systems Hybrid North West Are you ready to design and shape the core architecture of a platform built to support global scale , rapid growth, and long-term innovation? We are at the start … teams , and lead architectural decision-making while staying close enough to the code to guide best practice. What You ll Do Define the architecture, design principles, and technical roadmap for a highly scalable, distributed platform. Lead end-to-end solution design across event-driven , microservices , and cloud-native ...

Software Architect

Hiring Organisation
Uniting Ambition
Location
North West, United Kingdom
Employment Type
Permanent
High-Scale .NET Platform C#, .NET, Kafka, SQL, AWS, AI/ML, Event-Driven Systems Hybrid – North West Are you ready to design and shape the core architecture of a platform built to support global scale , rapid growth, and long-term innovation? We are at the start … teams , and lead architectural decision-making while staying close enough to the code to guide best practice. What You’ll Do Define the architecture, design principles, and technical roadmap for a highly scalable, distributed platform. Lead end-to-end solution design across event-driven , microservices , and cloud-native ...