Senior Software Engineer

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

Job summary

Fractal Analytics Inc. in London is seeking a Senior Software Engineer with deep expertise in Java and Kotlin to design, build, and support scalable backend systems for banking and financial services.

You will lead technical initiatives, drive architectural decisions, and mentor engineers while delivering resilient, production-ready microservices on AWS and multi-cloud platforms. Join a fast-growing team focused on high-scale, mission-critical systems and responsible AI-assisted development

Qualifications

• Banking, fintech, or financial services experience is preferred.
• Experience with mission-critical, high-scale production systems.

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 and guide technical direction.

Skills

Java

Kotlin

REST APIs

Microservices

AWS / Multi-cloud

CI/CD

Testing (Unit/Integration)

Distributed systems

Tools

JVM ecosystem

Job description

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!

At Fractal, towards our goal of “powering every human decision in the enterprise”, our partnerships and alliances help in creating and delivering a compelling suite of solutions to unlock value. We partner with companies from around the globe, leaders in their respective fields. With Fractal’s expertise in artificial intelligence, design, engineering, and digital transformation, combined with the data, technology, and software platforms from our partners, we create cutting-edge solutions to problems in the business world. We understand how critical and timely decision triggers, and information, empower our clients to create, unlock, deliver, and realize value. Together with our partners, our goal is to serve each client in their end-to-end data-to-decision journey.