Senior Software Engineer

Fractal; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Fractal is seeking a Senior Software Engineer to design, build, and operate scalable backend services and cloud-native microservices in a banking/fintech context. You will lead technical direction, mentor engineers, and contribute across the full software lifecycle.

We expect deep Java/Kotlin expertise, experience with distributed systems and AWS, and a strong focus on security, resiliency, and operational excellence.

Qualifications

• Banking/fintech or financial services experience.
• Experience with mission-critical, high-scale production systems and payment network integrations.
• Experience building customer-facing platforms and transaction processing solutions.
• Understanding of security, compliance, resiliency, and operational risk.

Responsibilities

• Design, develop, and support scalable backend services, APIs, and cloud-native microservices.
• Build distributed and event-driven systems using messaging and asynchronous processing patterns.
• Drive engineering excellence through architecture, coding standards, testing, and automation.
• Support production systems, incident management, troubleshooting, and operational resilience.
• Balance long-term architecture goals with short-term delivery priorities.
• Collaborate across engineering teams, product owners, architects, and business stakeholders.
• Mentor engineers, foster knowledge sharing, and shape technical direction.
• Promote responsible adoption of AI-assisted software development practices.
• Ensure engineering output meets stakeholder expectations, security, resiliency and compliance standards.

Skills

Java/Kotlin

REST APIs

Cloud-native

Distributed systems

AWS

CI/CD

Testing

JVM ecosystem

Tools

Messaging frameworks

Relational databases

AWS

Job description

It's fun to work in a company where people truly BELIEVE in what they are doing!

We're committed to bringing passion and customer focus to the business.

Senior Software Engineer

Location: London, UK (Canary Wharf)

Duration: Sep 2026 - June 2027

On-site Expectation: Up to 5 days per week in office

Brief About The Team & Fractal

Fractal Analytics is Leading Fortune 500 companies leverage Big Data, analytics, and technology to drive smarter, faster and more accurate decisions in every aspect of their business.

Fortune 500 companies recognize analytics is a competitive advantage to understand customers and make better decisions. We deliver insight, innovation, and impact to them through predictive analytics and visual storytelling.

Role Details

We are seeking a Senior Software Engineer with deep expertise in Java/Kotlin, cloud-native development, and distributed systems to design, build, and support scalable production banking and financial services systems. The ideal candidate will combine strong technical leadership with hands-on engineering excellence and a proven ability to deliver scalable, resilient, and contributing across the full software development lifecycle.

Domain Experience

• Banking, payments, fintech, or financial services experience.
• Exposure to mission-critical, high-scale production systems, and payment network integrations.
• Experience building customer-facing platforms and transaction processing solutions.
• Understanding of security, compliance, resiliency, and operational risk requirements.

Roles And Responsibilities

• Design, develop, and support scalable backend services, APIs, and cloud-native microservices.
• Build distributed and event-driven systems using messaging and asynchronous processing patterns.
• Drive engineering excellence through architecture, coding standards, testing, and automation.
• Support production systems, incident management, troubleshooting, and operational resilience.
• Balance long-term architecture goals with short-term delivery priorities.
• Collaborate across engineering teams, product owners, architects, and business stakeholders.
• Mentor engineers, foster knowledge sharing, and shape technical direction.
• Promote responsible adoption of AI-assisted software development practices.
• Ensure engineering output meets stakeholder expectations, security, resiliency and compliance standards.

Technical Skills

• Strong hands-on experience with Java and/or Kotlin.
• Expertise in REST APIs, microservices, and distributed systems.
• Experience with AWS/multi-cloud cloud-native environments.
• Hands-on experience with messaging frameworks and event-driven architectures.
• Strong understanding of relational databases and data architecture patterns.
• Experience with CI/CD, DevOps, automation, and modern software delivery practices.
• Strong testing capabilities across Unit, Component, Integration, End-to-End, and Performance Testing.
• Familiarity with JVM ecosystem technologies, open-source frameworks, and production support.

Non-Technical Skills

• Strong leadership, ownership, and problem‑solving mindset.
• Ability to thrive in ambiguous and rapidly changing environments.
• Excellent stakeholder management, communication, and collaboration skills.
• Proven ability to influence engineering practices beyond immediate teams.
• Experience coaching and developing engineers while driving continuous improvement.

If you like wild growth and working with happy, enthusiastic over-achievers, you’ll enjoy your career with us!