Staff Software Engineer

Barclays is hiring a Staff Software Engineer in London to improve how we build, deploy and run software for our payments acceptance business.

Responsibilities

• Development and delivery of high‑quality software solutions using industry‑aligned programming languages, frameworks, and tools. Ensuring that code is scalable, maintainable, and optimized for performance.
• Cross‑functional collaboration with product managers, designers, and other engineers to define software requirements, devise solution strategies, and ensure seamless integration and alignment with business objectives.
• Collaboration with peers, participate in code reviews, and promote a culture of code quality and knowledge sharing.
• Stay informed of industry technology trends and innovations and actively contribute to the organization’s technology communities to foster a culture of technical excellence and growth.
• Adherence to secure coding practices to mitigate vulnerabilities, protect sensitive data, and ensure secure software solutions.
• Implementation of effective unit testing practices to ensure proper code design, readability, and reliability.

Qualifications

• Deep expertise in backend engineering and building large‑scale distributed systems within a cloud environment preferably AWS (Azure, GCP also suitable)
• Expert level mastery of Java or Kotlin, Scala, or similar JVM language
• Data Layer Expertise – experience with both SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, DynamoDB, Redis) databases, understanding when to use each
• Proven experience working with AI Technologies or machine learning integration
• FinTech, Payments, scaling Tech or start‑up domain experience
• Rust – experience with systems programming and performance‑critical services
• Kubernetes – container orchestration experience with K8s, Helm, and cloud‑native deployment strategies
• React – modern frontend development skills with React, TypeScript, and state management libraries
• Observability – experience with monitoring, logging, and tracing tools
• CI/CD Wizardry – extensive DevOps mindset with experience in automated deployment pipelines, infrastructure as code, and GitOps practices
• Messaging & Events – solid grasp of messaging technologies (Kafka, RabbitMQ, SQS, NATS) and event‑driven architecture patterns
• API Design – proven track record designing and implementing RESTful and/or GraphQL APIs that scale

Work Arrangement

We support a hybrid working pattern with 3 days per week office‑based presence expected. The team operates an on‑call rota, so weekend and evening work may be required on occasion.

The successful candidate will be based in London. Our offices are located at 1 Churchill Place and 7 Westferry Circus (new BPL office).

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