14 of 14 Permanent API Design Jobs in Central London

performance, and team growth. Someone who is a technologist at heart and regrets not coding as much but can still (if needed) review PRs, design solution architectures, or contribute to system designs (Approximately 20% of the role) HOWEVER, understands that their greatest impact comes from enabling others to thrive … and secure Play a hands-on role in development, especially in Java (ideally with Quarkus/GraalVM, or SpringBoot as an alternative) Oversee backend API design and integration, including messaging platforms such as Pub/Sub Define and track technical KPIs (e.g. system availability, latency, error rates) Collaborate … for Quarkus or GraalVM; SpringBoot experience also considered Familiarity with messaging systems such as Pub/Sub, Kafka, or RabbitMQ Strong understanding of REST API design, CI/CD practices, and Agile methodologies Experience in fintech, payments, or banking domains Who this suits: Someone who is technically strong More ❯

Business Analyst - API Design - Outside IR35 A technical business analyst is required to join a PE-backed insurer and lead API design for a variety of digital initiatives. Insurance experience will be key as the role will work closely with pricing and actuarial teams. It's … also important to have experience with JSON and be comfortable with API data structures. This will be a business facing role, so the ask is for 3 days per week in the office. 6 month initial contract, £600 - £800 per day, outside IR35. Please apply for more info. More ❯

Business Analyst - API Design - Outside IR35 A technical business analyst is required to join a PE-backed insurer and lead API design for a variety of digital initiatives. Insurance experience will be key as the role will work closely with pricing and actuarial teams. It's … also important to have experience with JSON and be comfortable with API data structures. This will be a business facing role, so the ask is for 3 days per week in the office. 6 month initial contract, £600 - £800 per day, outside IR35. Please apply for more info. More ❯

Business Analyst - API Design - Outside IR35 A technical business analyst is required to join a PE-backed insurer and lead API design for a variety of digital initiatives. Insurance experience will be key as the role will work closely with pricing and actuarial teams. It's … also important to have experience with JSON and be comfortable with API data structures. This will be a business facing role, so the ask is for 3 days per week in the office. 6 month initial contract, £600 - £800 per day, outside IR35. Please apply for more info. More ❯

Application Security Specialist Our client is looking to hire mid-level API & Application Security Specialist to join them on a 6-month initial contract, to work remotely with some occasional trips to the London site. This role will be operating INSIDE IR35 Key Skills Required: Deep knowledge of OWASP … API Top 10 Able to review Swagger/Open API specs for vulnerabilities Advise on secure API design patterns Familiar with fallback controls such as WAF's, API gateways Experience using SIEM/logging tools to track API threats Familiarity with NIST, OWASP SAMM … or internal security frameworks Experience producing risk dashboards/reports for API's Able to translate technical risks into business language, collaborating with key stakeholders If interested in this role, please apply today More ❯

Application Security Specialist Our client is looking to hire mid-level API & Application Security Specialist to join them on a 6-month initial contract, to work remotely with some occasional trips to the London site. This role will be operating INSIDE IR35 Key Skills Required: Deep knowledge of OWASP … API Top 10 Able to review Swagger/Open API specs for vulnerabilities Advise on secure API design patterns Familiar with fallback controls such as WAF's, API gateways Experience using SIEM/logging tools to track API threats Familiarity with NIST, OWASP SAMM … or internal security frameworks Experience producing risk dashboards/reports for API's Able to translate technical risks into business language, collaborating with key stakeholders If interested in this role, please apply today More ❯

Application Security Specialist Our client is looking to hire mid-level API & Application Security Specialist to join them on a 6-month initial contract, to work remotely with some occasional trips to the London site. This role will be operating INSIDE IR35 Key Skills Required: Deep knowledge of OWASP … API Top 10 Able to review Swagger/Open API specs for vulnerabilities Advise on secure API design patterns Familiar with fallback controls such as WAF's, API gateways Experience using SIEM/logging tools to track API threats Familiarity with NIST, OWASP SAMM … or internal security frameworks Experience producing risk dashboards/reports for API's Able to translate technical risks into business language, collaborating with key stakeholders If interested in this role, please apply today More ❯

Application Security Specialist Our client is looking to hire mid-level API & Application Security Specialist to join them on a 6-month initial contract, to work remotely with some occasional trips to the London site. This role will be operating INSIDE IR35 Key Skills Required: Deep knowledge of OWASP … API Top 10 Able to review Swagger/Open API specs for vulnerabilities Advise on secure API design patterns Familiar with fallback controls such as WAF's, API gateways Experience using SIEM/logging tools to track API threats Familiarity with NIST, OWASP SAMM … or internal security frameworks Experience producing risk dashboards/reports for API's Able to translate technical risks into business language, collaborating with key stakeholders If interested in this role, please apply today More ❯

Application Security Specialist Our client is looking to hire mid-level API & Application Security Specialist to join them on a 6-month initial contract, to work remotely with some occasional trips to the London site. This role will be operating INSIDE IR35 Key Skills Required: Deep knowledge of OWASP … API Top 10 Able to review Swagger/Open API specs for vulnerabilities Advise on secure API design patterns Familiar with fallback controls such as WAF's, API gateways Experience using SIEM/logging tools to track API threats Familiarity with NIST, OWASP SAMM … or internal security frameworks Experience producing risk dashboards/reports for API's Able to translate technical risks into business language, collaborating with key stakeholders If interested in this role, please apply today More ❯

Application Security Specialist Our client is looking to hire mid-level API & Application Security Specialist to join them on a 6-month initial contract, to work remotely with some occasional trips to the London site. This role will be operating INSIDE IR35 Key Skills Required: Deep knowledge of OWASP … API Top 10 Able to review Swagger/Open API specs for vulnerabilities Advise on secure API design patterns Familiar with fallback controls such as WAF's, API gateways Experience using SIEM/logging tools to track API threats Familiarity with NIST, OWASP SAMM … or internal security frameworks Experience producing risk dashboards/reports for API's Able to translate technical risks into business language, collaborating with key stakeholders If interested in this role, please apply today More ❯

Application Security Specialist Our client is looking to hire mid-level API & Application Security Specialist to join them on a 6-month initial contract, to work remotely with some occasional trips to the London site. This role will be operating INSIDE IR35 Key Skills Required: Deep knowledge of OWASP … API Top 10 Able to review Swagger/Open API specs for vulnerabilities Advise on secure API design patterns Familiar with fallback controls such as WAF's, API gateways Experience using SIEM/logging tools to track API threats Familiarity with NIST, OWASP SAMM … or internal security frameworks Experience producing risk dashboards/reports for API's Able to translate technical risks into business language, collaborating with key stakeholders If interested in this role, please apply today More ❯

Application Security Specialist Our client is looking to hire mid-level API & Application Security Specialist to join them on a 6-month initial contract, to work remotely with some occasional trips to the London site. This role will be operating INSIDE IR35 Key Skills Required: Deep knowledge of OWASP … API Top 10 Able to review Swagger/Open API specs for vulnerabilities Advise on secure API design patterns Familiar with fallback controls such as WAF's, API gateways Experience using SIEM/logging tools to track API threats Familiarity with NIST, OWASP SAMM … or internal security frameworks Experience producing risk dashboards/reports for API's Able to translate technical risks into business language, collaborating with key stakeholders If interested in this role, please apply today More ❯

integration. If you enjoy working with both established and emerging technologies in a collaborative environment, we d love to hear from you. Key Responsibilities Design, develop, and maintain scalable web applications using .NET and Vue.js. Support and enhance legacy systems built with older .NET and Vue.js versions. Optimize database … least 3 years of experience building modern front-end applications with Vue.js (including both Vue 2 and Vue 3). Strong understanding of RESTful API design and integration. Proficient in object-oriented programming and applying SOLID principles in real-world projects. Comfortable working in Agile or Scrum-based … process automation tools such as Camunda. Proficient in automated testing using frameworks like NUnit or Playwright. Understanding of architectural patterns such as Domain-Driven Design (DDD), event-driven systems, and microservices. Knowledge of Behavior-Driven Development (BDD) and Test-Driven Development (TDD) methodologies. What s on Offer 4 Wellbeing More ❯

re recruiting for a talented Senior Back End Developer to join our excellent team, based in Bank, London. The Senior Back End Developer will design, develop, test and support capabilities in our digital experience platform to create competitive advantage for SThree, as part of a small software development team. … and discovering life-changing jobs for the unsung heroes who will positively shape our future. What are the day-to-day tasks? Hands-on design, development and testing of solutions, adhering to SThree's architectural principles, policies, and guidelines. Work with business stakeholders to understand opportunities and to design solutions that deliver the required outcomes. Work with other technology teams to design and deliver end-to-end capabilities. Integrate solutions with other systems in SThree's technology landscape, for example CRM and ERP systems. Provide support to users and resolve systems issues. Configure CICD pipelines to support More ❯