API & Microservices Architect

Capgemini; Sheffield; On-site; GBP 75,000 - 100,000; Full time

Job summary

A leading technology consultancy in Sheffield seeks an experienced API Engineer to deliver expertise in next-generation payment processing architecture. You will develop high-quality, resilient, and scalable software solutions while collaborating with cross-functional teams. The role requires strong knowledge in API design, microservices, robust leadership skills, and at least 15 years of experience in the field.

Qualifications

• 15+ years of experience in API engineering and architecture.
• Strong expertise in API design, microservices, and distributed systems.
• Proficiency in Java; experience with Go and Rust preferred.
• Hands-on experience with Spring Boot, Docker, Kubernetes, service mesh.

Responsibilities

• Deliver engineering expertise for next-generation payment processing architecture.
• Develop high-quality, resilient, and scalable software solutions.
• Lead by example in coding standards, testing, and quality assurance.
• Collaborate with cross-functional teams to design and implement new capabilities.

Skills

API engineering

API design

Microservices

Distributed systems

Java

Go

Rust

Spring Boot

Docker

Kubernetes

Kafka

Linux

Tools

Splunk

Grafana

Prometheus

Job description

GET THE FUTURE YOU WANT!

Choosing Capgemini means choosing a company where you will be empowered to shape your career in the way you'd like, where you'll be supported and inspired by a collaborative community of colleagues around the world, and where you'll be able to reimagine what's possible. Join us and help the world's leading organizations unlock the value of technology and build a more sustainable, more inclusive world.

YOUR ROLE

Join a new team delivering theFuture State Architecture for payment processing. We aim to introduce a lean and reusable payment processing engine that will form the foundation of next-generation payment capabilities. This role involves leveraging existing software assets in an inner-sourcing model, focusing on reuse and enhancement to enable rapid delivery of new product features at low cost and high quality.

YOUR PROFILE

• Deliver engineering expertise for next-generation payment processing architecture.
• Develop high-quality, resilient, and scalable software solutions.
• Lead by example in coding standards, testing, and quality assurance.
• Collaborate with cross-functional teams to design and implement new capabilities.
• Drive modernization and cloud adoption for payment systems.
• Set benchmarks for software delivery and technical excellence.
• Act as a subject matter expert, providing solutions to complex technical challenges.
• Ensure alignment with corporate technology strategy and best practices.
• Partner with DevOps for automated infrastructure, CI/CD pipelines, and security compliance.
• Conduct feasibility studies, cost/benefit analyses, and system reviews.
• Provide architecture guidance and ensure compliance with regulatory and security standards.
• 15+ years of experience in API engineering and architecture.
• Strong expertise in API design, microservices, and distributed systems.
• Proficiency in Java; experience with Go and Rust preferred.
• Hands‑on experience with Spring Boot, Docker, Kubernetes, service mesh.
• Expertise in Kafka, observability tools (Splunk, Grafana, Prometheus), and cloud/DevOps.
• Solid knowledge of Linux, networking, storage, and SQL; familiarity with distributed databases.
• Experience in financial services/payments domain is a plus.
• Strong leadership, problem‑solving, and communication skills.

ABOUT CAPGEMINI

Capgemini is a global business and technology transformation partner, helping organizations to accelerate their dual transition to a digital and sustainable world, while creating tangible impact for enterprises and society. It is a responsible and diverse group of 350,000 team members in more than 50 countries. With its strong over 55-year heritage, Capgemini is trusted by its clients to unlock the value of technology to address the entire breadth of their business needs. It delivers end-to-end services and solutions leveraging strengths from strategy and design to engineering, all fueled by its market leading capabilities in AI, cloud and data, combined with its deep industry expertise and partner ecosystem. The Group reported 2023 global revenues of €22.5 billion.

Get the future you want | www.capgemini.com