Senior Full-Stack Engineer: Build Scalable FinTech Systems

Next Frontier Capital; Greater London; On-site; GBP 80,000 - 110,000; Full time

Job summary

J.P. Morgan is seeking a Software Engineer III in London to own end-to-end delivery of secure, full-stack features across microservices architectures.

You will design, implement, test, and operate production-grade software, leveraging Kafka, Spring Boot, and CI/CD pipelines while driving performance, resiliency, and automation for scalable financial technology systems. You will partner on technical evaluations, mentor teammates, and contribute to an inclusive engineering culture.

Qualifications

• Formal training or certification on software engineering concepts and proficient applied experience.
• Demonstrated ownership of system design and delivery for production services, including testing strategy, release execution, and operational support.
• Strong proficiency in Java and common frameworks such as Spring Boot, Hibernate, JPA, and Spring Kafka, including performance tuning and troubleshooting patterns.
• Working knowledge of microservices and Kafka/event-driven architectures, including reliability patterns such as idempotency, retries, ordering, and dead-letter queues.
• Experience implementing automation and continuous delivery, including build and test automation, CI/CD pipelines, and quality gates.
• Proficiency across the full software development lifecycle — requirements, design, implementation, testing, release, and support — with clear documentation and traceability.
• Strong understanding of Agile delivery, application resiliency, secure engineering practices, and operational readiness.
• Hands-on experience using enterprise-authored AI-assisted software development tools within the work environment...
• Understanding of responsible AI use in engineering workflows, including data sensitivity considerations, secure handling of inputs/outputs, and adherence to resiliency and security expectations.

Responsibilities

• Lead delivery of complex features and services by shaping solution options, driving design decisions, and implementing scalable software that addresses ambiguous, multi-dimensional problems.
• Own end-to-end engineering outcomes across design, build, test, release, and operate phases — ensuring security, resiliency, performance, and maintainability in production.
• Set a high bar for code quality by authoring secure production code, leading code reviews, and debugging complex cross-service issues while continuously improving engineering standards and hygiene.
• Drive operational excellence by identifying systemic failure patterns, implementing automation, and delivering sustainable fixes that measurably improve stability and resiliency.
• Influence architecture and platform alignment by contributing to service boundaries, API and event contracts, data flows, and non-functional requirements across teams.
• Partner on technical evaluations with internal teams, producing outcomes-oriented assessments of architecture, delivery readiness, security posture, and fit with existing platforms and information architecture.
• Mentor and elevate team capability through pairing, design reviews, knowledge sharing, and communities of practice that accelerate adoption of modern engineering practices.
• Promote an inclusive engineering culture by supporting a team environment grounded in diversity, opportunity, inclusion, and respect.
• Produce architecture and design artifacts for complex applications while ensuring design constraints are met throughout software code development.
• Leverage enterprise-authorized AI coding assist tools within the work environment to improve code quality, delivery speed, and productivity, while validating outputs through peer review and secure coding standards.
• Apply knowledge of tools within the Software Development Life Cycle toolchain, including AI-assisted development and automation capabilities, to improve value.

Skills

Java

Spring Boot

Hibernate

JPA

Spring Kafka

Microservices

Kafka

CI/CD

Agile delivery

AI-assisted development tools

Responsible AI

Cloud-native development

Tools

Kafka

CI/CD pipelines

Spring Boot

Job description

J.P. Morgan is seeking a Software Engineer III in London to own end-to-end delivery of secure, full-stack features across microservices architectures.

You will design, implement, test, and operate production-grade software, leveraging Kafka, Spring Boot, and CI/CD pipelines while driving performance, resiliency, and automation for scalable financial technology systems. You will partner on technical evaluations, mentor teammates, and contribute to an inclusive engineering culture.