6 of 6 Permanent API Development Jobs in the City of London

Solution Architect - AWS, API, Microservices, Remote, FinTech Salary - £100,000 + 10% Bonus + Benefits Location - London, Remote We're proud to represent a FinTech scale-up setting a new industry standard in their market. With ambitious plans to scale the platform over the next few years and support … understand business requirements and translate them into technical solutions Design and architect scalable, resilient, and secure microservices-based applications on AWS cloud platform. Develop API strategies and integrations to enable seamless communication between different systems and services. Provide technical leadership and guidance throughout the software development lifecycle, from … with microservices architecture, including design patterns, containerisation, and orchestration (e.g., Docker, Kubernetes). Strong proficiency in AWS cloud services, including EC2, Lambda, S3, RDS, API Gateway, and IAM. In-depth knowledge of secure financial systems, including banking, payments, trading, or risk management. Hands-on experience with API development More ❯

Solution Architect - AWS, API, Microservices, Remote, FinTech Salary - £100,000 + 10% Bonus + Benefits Location - London, Remote We're proud to represent a FinTech scale-up setting a new industry standard in their market. With ambitious plans to scale the platform over the next few years and support … understand business requirements and translate them into technical solutions Design and architect scalable, resilient, and secure microservices-based applications on AWS cloud platform. Develop API strategies and integrations to enable seamless communication between different systems and services. Provide technical leadership and guidance throughout the software development lifecycle, from … with microservices architecture, including design patterns, containerisation, and orchestration (e.g., Docker, Kubernetes). Strong proficiency in AWS cloud services, including EC2, Lambda, S3, RDS, API Gateway, and IAM. In-depth knowledge of secure financial systems, including banking, payments, trading, or risk management. Hands-on experience with API development More ❯

Evangelise emerging technologies and modern engineering practices. Mentor and guide large technical teams, promoting high standards in code quality, DevSecOps, and automation. Drive the development of cloud-native applications, with a strong focus on modern JavaScript frameworks and API/microservices architecture. Monitor and improve engineering maturity across … closely with stakeholders, manage technical dependencies, and communicate effectively through strong storytelling and influence. Essential Skills & Experience: Strong background in JavaScript frameworks, microservices, and API development. Experience in building modern applications with cloud-native architectures. Proven leadership in large technical teams, with an Agile and product-focused mindset. Expertise More ❯

augmented generation (RAG), and reasoning frameworks to build intelligent and context-aware systems. We are seeking talented Machine Learning Engineers with full-stack software development experience to join our client's team and help shape the future of AI-powered automation. Within this dynamic role varied duties will include … Search relevancy engineering. Conversational AI Development : Design, train, fine-tune, and deploy LLMs with reasoning capabilities. Retrieval-Augmented Generation (RAG): Implement, optimise, and scale RAG pipelines for effective information retrieval from structured and unstructured sources. Model Fine-Tuning & Training : Train domain-specific models using techniques like LoRA, QLoRA, PEFT … MLOps: Deploy scalable machine learning workloads on AWS using services like SageMaker, Bedrock, Lambda, S3, DynamoDB, ECS, and EKS. End-to-End AI Product Development : Work across the full ML lifecycle, from data collection and preprocessing to model evaluation, deployment, and monitoring. Full-Stack Integration : Develop APIs and integrate More ❯

will be doing: As a Senior Integration Developer, you will be responsible for designing, developing, and maintaining iPaaS solutions. You will oversee the integration API layer, ensuring seamless communication between various systems using appropriate integration tools. Key Responsibilities Manage all aspects of the integration layer. Evaluate and propose enhancements … both functional and non-functional-to improve existing integration solutions. Develop designs and technical specifications for API development. Ensure adherence to integration best practices and standards, including security and error handling. Participate in Technical Design meetings, assessing potential risks and communicating findings to relevant stakeholders. What we are looking More ❯

will be doing: As a Senior Integration Developer, you will be responsible for designing, developing, and maintaining iPaaS solutions. You will oversee the integration API layer, ensuring seamless communication between various systems using appropriate integration tools. Key Responsibilities Manage all aspects of the integration layer. Evaluate and propose enhancements … both functional and non-functional-to improve existing integration solutions. Develop designs and technical specifications for API development. Ensure adherence to integration best practices and standards, including security and error handling. Participate in Technical Design meetings, assessing potential risks and communicating findings to relevant stakeholders. What we are looking More ❯