Senior AWS API & Integration Engineer

CAPGEMINI; City Of London; Hybrid; GBP 65,000 - 90,000; Full time

Job summary

Capgemini's Cloud & Custom Applications (C&CA) practice is seeking a Solution Engineer to design and deliver scalable, secure services for acquiring and chargeback processes. You will work in a hybrid model, collaborating with cross-functional teams to translate business needs into robust engineering solutions.

You will apply expertise in cloud-native design, API-led integration and event-driven architectures, while promoting secure delivery practices and continuous improvement across delivery

Qualifications

• Hands-on experience designing and delivering cloud-native applications.
• Experience building API-led integration services.
• Strong knowledge of event-driven architectures and asynchronous processing.
• Experience delivering scalable, secure distributed applications.

Responsibilities

• Design and deliver scalable, secure, resilient business services for acquiring and chargeback processes.
• Build and maintain event-driven solutions for reliable transaction processing.
• Develop interfaces enabling integration between enterprise applications.
• Ensure ingestion, transformation, validation, and routing of data across systems.
• Implement robust messaging and event-processing patterns for reliability.
• Design data models and persistence strategies for performance and maintainability.
• Collaborate with cross-functional teams to translate requirements into engineering solutions.
• Promote engineering excellence through continuous improvement and secure delivery practices.
• Identify opportunities to leverage AI-assisted capabilities to improve delivery outcomes.

Skills

Cloud-native design

API-led integration

Event-driven arch

Distributed apps

Enterprise integration

Data modeling

Stakeholder collaboration

Problem solving

Secure delivery

AI-enabled tools

Tools

AWS

NATS JetStream

CI/CD tooling

DevOps practices

REST API frameworks

Job description

About the Job you are considering:

Join Capgemini's Cloud & Custom Applications (C&CA) practice as a Solution Engineer supporting business-critical acquiring and chargeback services. Working within a collaborative delivery environment, you will help design and build scalable, resilient solutions that enable clients to respond to evolving business needs with confidence. In line with our vision, Consult with Purpose. Continuously Evolve. Architect Tomorrow., you will act as a trusted, AI-aware engineering professional, delivering high-quality outcomes, driving continuous improvement, and contributing to a future-ready workforce while helping clients achieve measurable value.

Hybrid working:

The places that you work from day to day will vary according to your role, your needs, and those of the business; it will be a blend of Company offices, client sites, and your home; noting that you will be unable to work at home 100% of the time.

Key Responsibilities

• Design and deliver scalable, secure, and resilient business services that support critical acquiring and chargeback processes.
• Build and maintain event-driven solutions that enable reliable processing of business transactions and operational workflows.
• Develop and enhance service interfaces that facilitate seamless integration between enterprise applications and business domains.
• Ensure efficient ingestion, transformation, validation, and routing of data across connected systems.
• Implement robust messaging and event-processing patterns that improve reliability, observability, and business responsiveness.
• Design data models and persistence strategies that support performance, scalability, and long-term maintainability.
• Collaborate with cross-functional teams to translate business requirements into effective engineering solutions and measurable outcomes.
• Promote engineering excellence through continuous improvement, knowledge sharing, and adherence to secure delivery practices.
• Contribute to innovation by identifying opportunities to leverage emerging capabilities, including AI-assisted ways of working, to improve delivery outcomes.
• Support the development of a future-ready team culture through mentoring, collaboration, and continuous learning.

Must-Have Skills

• Strong hands-on experience designing and delivering cloud-native application solutions.
• Proven experience developing and supporting API-led integration services.
• Strong understanding of event-driven architecture and asynchronous processing patterns.
• Experience designing scalable, resilient, and secure distributed applications.
• Knowledge of enterprise integration principles and service-oriented design.
• Experience modelling and managing transactional and operational data solutions.
• Ability to collaborate effectively with technical and non-technical stakeholders.
• Strong problem-solving, analytical, and troubleshooting skills.
• Understanding of secure software delivery and engineering best practices.
• Awareness of AI-enabled tools and approaches that enhance productivity and delivery effectiveness.

Good-to-Have Skills

• AWS services including Lambda, S3, DynamoDB, and related cloud-native capabilities.
• NATS JetStream or comparable event-streaming and messaging platforms.
• REST API design frameworks and associated governance practices.
• Microservices architecture patterns.
• CI/CD and DevOps tooling and practices.
• Experience within payments, merchant acquiring, chargebacks, or dispute management domains.
• AWS certifications or other relevant cloud certifications.
• Experience with observability, monitoring, and operational support frameworks.

We are a Disability Confident Employer:

Capgemini is proud to be a Disability Confident Employer (Level 2) under the UK Government's Disability Confident scheme. As part of our commitment to inclusive recruitment, we will offer an interview to all candidates who:

• Declare they have a disability, and
• Meet the minimum essential criteria for the role.

Please opt in during the application process.

Make It Real (what does it mean for you):

• You’d be joining an accredited Great Place to work for Wellbeing in 2024. Employee wellbeing is vitally important to us as an organisation. We see a healthy and happy workforce a critical component for us to achieve our organisational ambitions.
• To help support wellbeing we have trained 'Mental Health Champions' across each of our business areas, and we have invested in wellbeing apps such as Thrive and Peppy.
• You will be empowered to explore, innovate, and progress. You will benefit from Capgemini's 'learning for life' mindset, meaning you will have countless training and development opportunities from thinktanks to hackathons, and access to 250,000 courses with numerous external certifications from AWS, Microsoft, Harvard Manage Mentor, Cybersecurity qualifications and much more.
• You will be joining one of the Worlds Most Ethical Companies, as recognised by Ethisphere for 13 consecutive years. We live our values by making ethical business choices every day. Working ethically is at the centre of our culture at Capgemini, meaning you will be helping to create a future we can all be proud of.

Why you should consider Capgemini:

Growing clients' businesses while building a more sustainable, more inclusive future is a tough ask. When you join Capgemini, you’ll join a thriving company and become part of a collective of free-thinkers, entrepreneurs and industry experts. We find new ways technology can help us reimagine what’s possible. It’s why, together, we seek out opportunities that will transform the worlds leading businesses, and it’s how you’ll gain the experiences and connections you need to shape your future. By learning from each other every day, sharing knowledge, and always pushing yourself to do better, you’ll build the skills you