Software Engineer (FinTech)

G MASS
London

G MASS is supporting a global FinTech organisation with the expansion of a core engineering team building enterprise-scale, AI-enabled data products. This role sits within a highly collaborative, Agile engineering environment focused on delivering scalable, cloud-native platforms used across the business.

You’ll work as part of a senior engineering group responsible for designing, building and maintaining high-performance software components within a distributed data ecosystem. The focus is on clean architecture, modern Java development and strong engineering practices.

Key responsibilities

  • Design, develop and maintain scalable software and data-modelling components within a distributed platform
  • Translate business and technical requirements into robust, well-designed solutions
  • Apply best-practice software engineering standards including code reviews, TDD and CI/CD
  • Troubleshoot and resolve complex software defects and performance issues
  • Actively participate in Agile ceremonies including sprint planning, stand-ups, demos and retrospectives
  • Mentor junior engineers through code reviews, pairing and knowledge sharing
  • Contribute to architectural decisions to ensure scalability, reliability and security
  • Produce and maintain clear technical documentation covering designs and workflows
  • Engage with stakeholders to communicate progress, risks and solutions
  • Continuously evaluate new tools, frameworks and approaches to improve engineering quality

Requirements

  • Strong commercial experience in software engineering, with deep expertise in Java (modern versions preferred)
  • Experience building distributed, enterprise-grade systems
  • Proficiency in SQL and experience working with relational and big-data technologies
  • Hands-on experience with commonly used databases such as PostgreSQL, HBase or Trino
  • Knowledge of gRPC patterns (unary, streaming and REST mapping)
  • Solid understanding of OOP design patterns, TDD and enterprise system design
  • Comfortable working in Linux environments using command-line tools
  • Experience with version control and collaborative development workflows

Nice to have

  • Experience with modern Java UI frameworks
  • Exposure to Apache Spark, Kafka or Avro
  • Cloud experience across AWS, Azure, GCP or Oracle Cloud
  • Knowledge of Kubernetes and containerised environments
  • Familiarity with DevOps practices and automation
  • Experience with additional languages or runtimes (e.g. C#, .NET, Python, JavaScript, GraalVM)

Benefits

Initial 6-month contract, with strong possibility of extension and/or permanency.

Salary to be discussed.

Posted 2026-02-03

Recommended Jobs

Corporate Tax Manager/SM - Digital Assets/Fintech/Crypto

Pro-Recruitment Group
London

Corporate Tax Manager/Senior Manager - Digital Assets/Fintech/Crypto Are you a Corporate Tax Manager looking to work at the cutting edge of Digital Assets, Crypto and FinTech? London Packag…

View Details
Posted 2026-03-06

B2B Financial Distribution Opportunity

Prestige IFA Jobs
London

Our client is looking for an experienced, Spanish speaking financial services distribution BDM to promote two of their two very popular and ground breaking solutions to the international IFA space.…

View Details
Posted 2026-01-18

VP Design - Berghaus

Pentland Brands
London

We’re Pentland Brands: a global family business behind some of the world’s most iconic active and lifestyle brands. We bring integrity, energy and ambition to our work, setting high standards and st…

View Details
Posted 2026-03-07

Early Years Chef

Bright Horizons
Surbiton, Greater London

Nursery – Bright Horizons Surbiton Day Nursery and Preschool Salary – starting from £30,660 per annum (dependant on qualification/s and experience) Location – Surbiton Are you looking to …

View Details
Posted 2026-03-15

Commercial Sales and Lettings Negotiator

London

Commercial Sales and Lettings Negotiator (Full or Part-Time) Salary: Competitive Location: Palmers Green Are you a driven and motivated individual looking to start or advance your career in…

View Details
Posted 2026-03-12

Business Development Director - Public Sector

Elsewhen
London

About Elsewhen: Elsewhen is a specialised AI Consultancy at the forefront of enterprise productivity. We partner with ambitious leaders at organisations like Google, Spotify, and WPP to unlock new…

View Details
Posted 2026-01-31

Tennis Coach

David Lloyd Clubs
London

Job Details Would you like to join Europe's leading premium health and wellness group? Our team members are the ambassadors of our business and the heart of what we do. We are on the look out fo…

View Details
Posted 2026-03-12

Trust & Estates Manager

Buckley Consulting
London

If your progression has stalled or your current firm doesn’t offer you the opportunities you’re looking for, this new and expanding team could be the answer. The role itself is pretty evenly split…

View Details
Posted 2025-07-25