1 to 25 of 232 API Design Jobs

Java/Microservices/API design/LLMs/AI/Claude Code/Copilot Role: Senior Software Engineer Company: Financial Services Location: London - Hybrid 3 days per week Salary: up to £120,000 Join a Service Modernisation team driving AI-first software development in financial services. This … development tools (e.g. Claude Code, GitHub Copilot, LLMs) Experience with MCP, AI automation, or agentic AI systems Strong understanding of microservices and API design Java/Microservices/API design/LLMs/AI/Claude Code/Copilot ...

Java/Microservices/API design/LLMs/AI/Claude Code/Copilot Role: Senior Software Engineer Company: Financial Services Location: London - Hybrid 3 days per week Salary: up to £120,000 Join a Service Modernisation team driving AI-first software development in financial services. This … development tools (e.g. Claude Code, GitHub Copilot, LLMs) Experience with MCP, AI automation, or agentic AI systems Strong understanding of microservices and API design Java/Microservices/API design/LLMs/AI/Claude Code/Copilot ...

possess a combination of some of the following skills, then LETS TALK! Experience in Java development Backend cloud-based application development Understanding of API design for mobile applications with event-driven architecture Strong analysis and problem-solving skills Preferred - Experience of building distributed scalable microservices using Java/… Kotlin, Spring Boot, OAuth 2.0, Secure API design A working understanding of technologies/areas: AWS, API Design, Automation testing In return, you will be rewarded with a highly competitive benefits package including a bonus and ongoing career development and training. What you need ...

measurable outcomes (OKRs/KPIs). Drive discovery activities (user research, hypothesis framing, spikes, proofs-of-concept) and validate solutions through iterative experimentation. Requirements & Design Convert business and technical needs into well-formed epics, features, and user stories with clear acceptance criteria. Apply UX principles to define intuitive workflows … interfaces; produce wireframes and low-fi mockups to align teams quickly. Collaborate with architects on solution design: API contracts, data models, event flows , and non-functional requirements (security, performance, scalability). Agile Delivery & Backlog Ownership Act as Product Owner for one or more Agile squads, owning the product ...

There will be a requirement to be in the office up to 3-days per week. The Role We are looking for a Security Design Engineer to lead secure software and application design across a critical in-house platform. You will own end-to-end solution design … service onto new infrastructure. Key responsibilities Own and deliver secure solution designs aligned to architecture standards and reference models Define architecture patterns, design decisions, risks, and deviations Collaborate with enterprise and solution architects to ensure strategic alignment Provide technical assurance and consultancy to engineering teams Present designs and recommendations ...

looking for a highly skilled Application Developer with strong expertise in identity API development, data ingestion and transformation, and event-driven (Pub/Sub) architectures . This role focuses on building secure, scalable identity and access workflows across Google Cloud Platform, integrating identity services with custom APIs, Pub/… pipelines, and cloud-native applications. You will collaborate closely with tech leads, Cloud Security, DevOps, and Application Engineering teams to design and implement robust IAM automation, identity lifecycle workflows, and secure service integrations that support enterprise-level cloud and Identity operations. Key Responsibilities Identity Orchestration Design and implement ...

cloud-native platforms supporting mobile applications in a regulated environment. This is a hands-on backend role focused on Java/Kotlin microservices, secure API design, and cloud delivery. You will contribute across the full SDLC while influencing engineering standards, best practices, and technical quality. Key Responsibilities Design … continuous improvement initiatives Required Skills & Experience Strong backend development experience with Java and/or Kotlin Spring Boot, REST APIs, microservices architecture Secure API design, OAuth, authentication/authorisation AWS or cloud platform experience Event-driven systems and distributed architectures Experience working in financial services or regulated environments ...

shaping Meteor's digital future. Key Responsibilities Lead, mentor, and inspire a team of developers, fostering a culture of technical excellence and continuous improvement Design, develop, and maintain high-quality software solutions across the full stack Architect and implement systems using .NET, JavaScript, SQL, and modern frontend frameworks Oversee … API design and integrations, ensuring secure and efficient data exchange Translate business and stakeholder requirements into clear technical solutions Conduct code reviews and ensure adherence to coding, security, and quality standards Drive continuous improvement in development workflows, testing, and deployment practices Support the professional development of team members ...

Days in Office The Role Dev Sec Ops Engineer Role Overview We are seeking a highly skilled Senior Data Platform & Integration Engineer to design, develop, and optimize enterprise data solutions. The ideal candidate will have deep expertise in modern data platforms, integration technologies, and advanced analytics, including AI/… ML. Key Responsibilities Data Platform Management Design and implement solutions using Microsoft Fabric, Snowflake, CosmoDB, Databricks, MongoDB, and traditional RDBMS systems Data Replication & CDC Configure and manage Qlik Replicate and Oracle GoldenGate for real-time data synchronization Data Modeling Develop conceptual, logical, and physical models using ERStudio Integration & Messaging ...

Days in Office The Role Dev Sec Ops Engineer Role Overview We are seeking a highly skilled Senior Data Platform & Integration Engineer to design, develop, and optimize enterprise data solutions. Is this your next job Read the full description below to find out, and do not hesitate to make … ideal candidate will have deep expertise in modern data platforms, integration technologies, and advanced analytics, including AI/ML. Key Responsibilities Data Platform Management Design and implement solutions using Microsoft Fabric, Snowflake, CosmoDB, Databricks, MongoDB, and traditional RDBMS systems Data Replication & CDC Configure and manage Qlik Replicate and Oracle ...

Role Title: Business Analyst - API Payments Umbrella rate: £350 - £385/Day Location: Knutsford Duration: 12 Months Days on site: 2-3 We are seeking a highly skilled Payments Business Analyst with strong experience in API integration and a solid understanding of the Payments domain. The ideal candidate … will act as a bridge between business stakeholders and technical teams, ensuring seamless delivery of payment solutions and API-driven integrations. Key Responsibilities * Requirements Gathering & Analysis o Collaborate with business stakeholders to understand payment workflows, transaction processing, and integration needs. o Document functional and non-functional requirements for APIs ...

years overall experience 8+ years in an architectural role Primary Skills (Must Have TA Screening) 18+ years in web application development (C#, ASP.NET, Web API, .NET Core/Framework) 12+ years in Angular or React 6+ years in Cloud (Azure or GCP) 4+ years in Microservices 10+ years … NUnit 8+ years in Design Patterns 14+ years with relational & NoSQL databases (SQL Server, PostgreSQL, Cosmos DB) 6+ years defining, designing, developing, and deploying web apps on Azure Job Responsibilities (RNR Technical Panel Evaluation) Lead architectural design & development of .NET applications (scalability, performance, security Design & implement cloud ...

intersection of knowledge graphs, real-time IoT data, and enterprise integration—building infrastructure that thousands of businesses will depend on. What You'll Own Design the framework that supports multiple partnership and customer models: Deep Embedded (white-label components), Best-of-Breed SaaS (standalone platform with APIs), Data Layer … Only (predictions via API) Evaluate architectural tradeoffs across complexity, risk, scalability, time-to-market, and value capture for each pattern Make build vs. buy decisions: direct API integrations vs. iPaaS middleware vs. embedded agents Define authentication strategies across OAuth 2.0, certificate-based auth, and federated identity for different ...

technology landscape. Define enterprise wide integration strategy. Provide technical insight while working with Change, Technology and Data teams on platform architecture & implementations. Technical Design/Governance. Translate strategy into a phased and implementable architecture roadmap. Stakeholder Management Experience Required: Architecture focused on software development, integration and technical architecture design. … API implementations, Message Queues and Event Driven Architecture - (ideally Azure Service Bus and Kafka). RESTful API design and API Gateway management. DevOps principles. CI/CD tools. Azure platform - (including IaaS, PaaS, Azure Databricks, Azure Data Factory and Azure Storage). In line with ...

interfaces, and define non-functional requirements. Ensure solutions are fit for purpose by collaborating with stakeholders and vendors, while assessing the impact of strategic design decisions. Work closely with both business and technology teams to shape the solution intent and architectural vision. Rapidly develop high-level architecture, refining details … prioritise technology-focused backlog items for the architecture runway. Provide clarity to development teams on architectural aspects, offering solution options to overcome impediments. Conduct design reviews to confirm all non-functional requirements are met (e.g., security, performance, scalability, usability, reliability). Operate as an individual contributor. Required Skills ...

architecture expertise to shape secure, resilient solutions within a regulated financial services environment. This role combines application architecture leadership with network security and segmentation design, requiring someone who can confidently operate across both disciplines. This is a must-have role for candidates with a software development background first … deeply understand application architecture, and can also design the network and security controls required to protect those applications. The role is inside IR35 with a requirement to be in the Sheffield office up to 3-days per week. The role You will own end-to-end security solution design ...

looking for an experienced Kotlin & Swift Developer with strong computer vision experience to design, build, and maintain a high-performance Software Development Kit (SDK) used in security-critical mobile applications. This role sits at the intersection of mobile engineering, applied computer vision, and SDK architecture, and will play … role in delivering reusable, secure, and developer-friendly components used by third-party teams and partners. Key Responsibilities SDK Design & Development Design and develop a cross-platform mobile SDK (iOS & Android) using Swift and Kotlin Create clean, modular, well-documented SDK APIs for external developers Ensure ...

looking for an experienced Kotlin & Swift Developer with strong computer vision experience to design, build, and maintain a high-performance Software Development Kit (SDK) used in security-critical mobile applications. This role sits at the intersection of mobile engineering, applied computer vision, and SDK architecture , and will play … role in delivering reusable, secure, and developer-friendly components used by third-party teams and partners. Key Responsibilities SDK Design & Development Design and develop a cross-platform mobile SDK (iOS & Android) using Swift and Kotlin Create clean, modular, well-documented SDK APIs for external developers Ensure ...

FinTech/RegTech startup, growing fast and trusted by regulated organisations. Engineering quality is at the core of everything we do - we value clean design, strong ownership, and systems that scale. The Opportunity We're looking for a Go Backend Engineer who wants to level up into a senior … data-intensive systems and be trusted with real ownership from day one. This is not a "ticket-factory" role, you'll be involved in design decisions, architecture discussions, and performance optimisation, with direct exposure to the CTO and senior engineers. If you enjoy solving complex backend problems, learning modern ...

FinTech/RegTech startup, growing fast and trusted by regulated organisations. Engineering quality is at the core of everything we do - we value clean design, strong ownership, and systems that scale. The Opportunity We're looking for a Go Backend Engineer who wants to level up into a senior … data-intensive systems and be trusted with real ownership from day one. This is not a "ticket-factory" role, you'll be involved in design decisions, architecture discussions, and performance optimisation, with direct exposure to the CTO and senior engineers. If you enjoy solving complex backend problems, learning modern ...

FinTech/RegTech startup, growing fast and trusted by regulated organisations. Engineering quality is at the core of everything we do - we value clean design, strong ownership, and systems that scale. The Opportunity We're looking for a Go Backend Engineer who wants to level up into a senior … data-intensive systems and be trusted with real ownership from day one. This is not a "ticket-factory" role, you'll be involved in design decisions, architecture discussions, and performance optimisation, with direct exposure to the CTO and senior engineers. If you enjoy solving complex backend problems, learning modern ...

FinTech/RegTech startup, growing fast and trusted by regulated organisations. Engineering quality is at the core of everything we do - we value clean design, strong ownership, and systems that scale. The Opportunity We're looking for a Go Backend Engineer who wants to level up into a senior … data-intensive systems and be trusted with real ownership from day one. This is not a "ticket-factory" role, you'll be involved in design decisions, architecture discussions, and performance optimisation, with direct exposure to the CTO and senior engineers. If you enjoy solving complex backend problems, learning modern ...

FinTech/RegTech startup, growing fast and trusted by regulated organisations. Engineering quality is at the core of everything we do - we value clean design, strong ownership, and systems that scale. The Opportunity We're looking for a Go Backend Engineer who wants to level up into a senior … data-intensive systems and be trusted with real ownership from day one. This is not a "ticket-factory" role, you'll be involved in design decisions, architecture discussions, and performance optimisation, with direct exposure to the CTO and senior engineers. If you enjoy solving complex backend problems, learning modern ...

FinTech/RegTech startup, growing fast and trusted by regulated organisations. Engineering quality is at the core of everything we do - we value clean design, strong ownership, and systems that scale. The Opportunity We're looking for a Go Backend Engineer who wants to level up into a senior … data-intensive systems and be trusted with real ownership from day one. This is not a "ticket-factory" role, you'll be involved in design decisions, architecture discussions, and performance optimisation, with direct exposure to the CTO and senior engineers. If you enjoy solving complex backend problems, learning modern ...

FinTech/RegTech startup, growing fast and trusted by regulated organisations. Engineering quality is at the core of everything we do - we value clean design, strong ownership, and systems that scale. The Opportunity We're looking for a Go Backend Engineer who wants to level up into a senior … data-intensive systems and be trusted with real ownership from day one. This is not a "ticket-factory" role, you'll be involved in design decisions, architecture discussions, and performance optimisation, with direct exposure to the CTO and senior engineers. If you enjoy solving complex backend problems, learning modern ...