251 to 271 of 271 API Design Jobs

iOS Software Engineer

Hiring Organisation
Burton Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £100,000 per annum
performance, reliability, and user trust are critical. Build and maintain iOS applications using Swift and SwiftUI. Integrate AI-powered features through backend APIs. Design UX patterns for AI interactions, including loading states, streaming responses, retries, and fallbacks. Optimize performance, memory usage, and battery efficiency. Capture user signals and feedback … support AI evaluation and iteration. Collaborate closely with backend and ML engineers on API design and system behavior. Maintain high App Store quality, stability, and production reliability. Requirements: 3+ years of iOS development experience using Swift. Hands-on experience integrating AI-powered features into mobile apps. Strong understanding ...

Senior Staff Backend Engineer - Data Platform (London)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
global technology company in London seeking a Lead Staff Software Engineer to own backend systems for a high-traffic data platform. You will design, build, and operate core services, mentor engineers, and collaborate across teams to drive technical direction in a fast-paced environment. You will lead a growing … engineering effort, run 1:1s, and participate in hiring to grow the London team. Strong experience with C#/.NET, SQL, and API design is highly valued. #J-18808-Ljbffr ...

Lead Backend Engineer

Hiring Organisation
Jobleads-UK
Location
Metropolitan Borough of Solihull, England, United Kingdom
Product team to deliver highly efficient systems. You would also: Collaborate with product managers, architects, and other stakeholders to define technical requirements and design, develop, and maintain backend systems that power our access control and security solutions. Evaluate , develop, and implement AI-powered tools and solutions to enhance products … services. Stay current with emerging AI technologies and provide technical leadership on the adoption of AI best practices across the team and participate in API design discussions and contribute to the evolution of our platform. Lead and assist a team of backend engineers, fostering a collaborative, high-performing ...

Senior Technical Product Analyst

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
from ten to one hundred! The role Are you someone who loves finding solutions to problems using technology? Do you enjoy working across product design, tech and commercial to bring these solutions to life? Are you self-motivated, able to take responsibility for scoping out, communicating and delivering feature … Partnering closely with customers and internal teams to support complex integrations, including leading technical discovery sessions and integration calls Developing a deep understanding of API design, payloads, schemas, permissions, and access logic to ensure scalable, secure, and intuitive platform experiences Assessing technical feasibility of new product initiatives, balancing ...

Hybrid Backend Engineer, Rust — Global Fintech Clearing

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
infrastructure in a hybrid work environment. The ideal candidate will have a strong background in distributed systems, particularly with Rust, and possess skills in API design and implementation. Join Neara to help shape new solutions in the financial sector, ensuring reliability and compliance while working with innovative technologies. ...

Remote Backend Engineer (Python) for AI Platform

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
integrating with external solutions. Collaboration with frontend, growth and sales teams is key to delivering customer-focused innovations. We value a strong backend foundation, API design skills, and knowledge of cloud infrastructure, data structures, and security fundamentals. #J-18808-Ljbffr ...

Senior Product Engineer: Internal Tools & AI

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Conveo.ai is seeking a Senior Product Engineer to own end-to-end internal tooling—Slack/React interfaces, API design, and AI-powered features. You’ll shape product direction, partner with cross-functional teams, and drive technical strategy across the stack, including LLM integrations. You’ll work ...

Principal Android Architect — AI-Driven Travel Search

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
experiences. The ideal candidate should have over 12 years of experience in Android application development and must possess a strong command of Kotlin and API design. This position offers an opportunity to work within a vibrant team focused on innovative solutions in the travel industry. #J-18808-Ljbffr ...

Cloud Engineer

Hiring Organisation
Anson McCade
Location
City of London, London, United Kingdom
technology organisation delivering mission-critical systems that support national security and help protect the UK. Working as part of empowered DevOps teams, you'll design, develop, deploy and maintain cloud-based applications and services, collaborating with engineers and end users to solve complex technical challenges. The Role … opportunity to work with cutting-edge cloud technologies, contribute to innovative solutions and continue developing your skills within a supportive engineering community. Key Responsibilities •Design, develop and maintain secure cloud solutions using AWS. •Build and support applications and services across AWS environments. •Work within agile DevOps teams to deliver ...

Staff Engineer - AI-Driven B2B Platform, Backend Lead

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
time, AI-native platform for in-store grocery experiences. We seek a senior backend-focused engineer who can own end-to-end delivery from API design to production, partnering with Product and Platform teams to ship complex, customer-facing features at pace. You will work in a fast ...

Senior Java Developer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
party integrations. You will work closely with Product Owners, Frontend Developers, DevOps, and QA to ensure smooth, efficient, and secure platform operations. Key Responsibilities Design and implement backend systems capable of handling thousands of concurrent player connections across multiple services. Develop scalable, modular microservices to support game logic, session … management, and operational services. API Development. Ensure low‐latency data processing to support live casino game engines. Collaborate with the product team to build new features, improve system performance, and support business requirements. Work with relational databases such as PostgreSQL and Oracle to ensure reliable and efficient data operations. ...

Senior Technical Product Manager – Financial Data Distribution

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
third‐party platform distributors and client distribution platforms to understand the future of data distribution. Product Discovery & Requirements Definition: Lead structured product discovery and design sessions with clients, business, technology and operations. Translate business and client needs into clear product requirements, technical specifications and prioritised backlog items. Own product … distribution architectures, including APIs, event/batch delivery, entitlement models and access controls. Demonstrated ability to work effectively with senior engineers and architects on design and trade‐off decisions. Experience defining API/FTP/Web distribution requirements. Preferred: Knowledge of the index business. Preferred: Experience with agentic ...

AI Ops Platform Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
cases. You will also be accountable for the end‐to‐end engineering of GenAI and ML platforms, embedding governance, observability and operational resilience by design, hile enabling teams to deploy and run AI solutions with clarity, assurance and accountability at scale. To be successful as an AI Ops Platform … services such as Amazon Bedrock for foundation models, agent orchestration patterns, Lambda and Step Functions, alongside demonstrated Python engineering capability and secure microservices and API design. AI governance, observability and cost optimisation, embedding governance by design through policy as code, alignment to model risk framework expectations, lifecycle traceability ...

Java & React Engineer

Hiring Organisation
Randstad Technologies Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£60000 - £70000/annum Market Rate/ Negotiable
Role: We are seeking an experienced Full-Stack Engineer (5-7 years) to join a leading global financial institution in London. You will design, build, and maintain high-performance, cloud-native applications supporting critical financial operations. Key Responsibilities: Design and deliver end-to-end applications using Java (Spring … proficiency in Java, Spring Boot, and ReactJS . Hands-on experience with AWS, Kubernetes, and Kafka . Strong grasp of multithreading, microservices architecture, and API design. Financial services, Investment Banking, or Risk domain experience is highly advantageous. Ability to work from the London office 3 days per week . ...

Engineering Lead

Hiring Organisation
Ikhoi Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£120,000 - £125,000 per annum
performance. System Architecture: Convert complex functional and non-functional requirements into elegant, high-performance, and resilient system designs across AWS infrastructure. Build the Foundation: Design and develop reusable libraries, APIs, and real-time Kafka data pipelines to be leveraged by engineering teams across the entire bank. Stakeholder Partnership: Engage … strategies from scratch. Excellent communicator and building teams. Modern Practices: A strong advocate for Test-Driven Development (TDD) , automated test frameworks, mocking, stubbing, and API design. Adaptability: The ability to rapidly translate complex business requirements into technical solutions, and a proven track record of supporting and maintaining code written ...

Security Engineer

Hiring Organisation
Jobleads-UK
Location
United Kingdom
have opportunities to contribute to other initiatives that directly advance our core values and support you in elevating your craft. How You’ll Contribute: Design Secure Systems: Partner with engineering teams to conduct threat modeling. You’ll ensure security is "baked‐in" to new features from the first line … attack vectors. How We Thrive: You’ll work with a team of talented engineers with a variety of areas of expertise, from devops to design, architecture to accessibility. The team’s experience level ranges from seasoned developers with well over a decade in industry to junior developers and contractors ...

Solution Architect - Integration - Salesforce

Hiring Organisation
SR2
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£650 - £750/day
drive architectural decisions will be essential. Responsibilities Define and maintain the end-to-end solution architecture across the rewards portal and wider Salesforce ecosystem. Design integration patterns across Salesforce, customer identity, APIs, mobile applications and enterprise platforms. Translate business and technical requirements into scalable, resilient and maintainable solution designs. … Define the architecture for SSO, customer identity integration and associated authentication journeys. Review and assure API designs, data flows, integration components and system dependencies. Support the design of mobile and in-app webview customer experiences. Produce architecture artefacts, solution options, design decisions and technical roadmaps. Coordinate suppliers ...

Salesforce Solution Architect

Hiring Organisation
SR2 Consulting | Certified B Corporation™
Location
Greenwich, England, United Kingdom
drive architectural decisions will be essential. Responsibilities Define and maintain the end-to-end solution architecture across the rewards portal and wider Salesforce ecosystem. Design integration patterns across Salesforce, customer identity, APIs, mobile applications and enterprise platforms. Translate business and technical requirements into scalable, resilient and maintainable solution designs. … Define the architecture for SSO, customer identity integration and associated authentication journeys. Review and assure API designs, data flows, integration components and system dependencies. Support the design of mobile and in-app webview customer experiences. Produce architecture artefacts, solution options, design decisions and technical roadmaps. Coordinate suppliers ...

Principal Android Engineer - Search and Recommendations Experience

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
technical leader who will shape the native search and discovery experiences across our global travel platforms. In this role you will architect, design, and deliver advanced Android mobile solutions that ensure scalability, performance, and maintainability. Responsibilities Architect, design, and deliver advanced Android mobile solutions, ensuring scalability, performance … quality, and knowledge sharing. Safely integrate and operate AI/ML-enabled solutions that improve mobile user experiences and business outcomes. Collaborate with product, design, and engineering stakeholders to deliver innovative mobile features and drive technical strategy across the organization. Minimum Qualifications Bachelor’s degree in Computer Science ...

Principal Android Engineer - Search and Recommendations Experience

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success. Why Join Us? To shape the future … search and discovery experiences, setting architectural direction, influencing engineering standards, and shaping the evolution of AI‐enabled capabilities across the mobile platform. Responsibilities Architect, design, and deliver advanced Android mobile solutions, ensuring scalability, performance, and maintainability across Expedia Group’s travel platforms. Lead technical direction for multi‐service ...

Principal Android Engineer - Search and Recommendations Experience

Hiring Organisation
Jobleads-UK
Location
City of Westminster, England, United Kingdom
setting architectural direction, influencing engineering standards, and shaping the evolution of AI-enabled capabilities across the mobile platform. In this role, you will: Architect, design, and deliver advanced Android mobile solutions, ensuring scalability, performance, and maintainability across Expedia Group’s travel platforms. Lead technical direction for multi-service … quality, and knowledge sharing. Safely integrate and operate AI/ML-enabled solutions that improve mobile user experiences and business outcomes. Collaborate with product, design, and engineering stakeholders to deliver innovative mobile features and drive technical strategy across the organization. Minimum Qualifications Bachelor’s degree in Computer Science ...