Lead Java Developer

Company: Synechron
Apply for the Lead Java Developer
Location: London
Job Description:

Synechron is a global technology consulting firm that helps leading organizations accelerate digital transformation through innovation, expertise, and agility. With more than 16,500 professionals across around 60 offices in over 20 countries, we combine deep industry knowledge with advanced capabilities in AI, cloud, cybersecurity, and data engineering. Our regional teams, supported by strategic delivery centers, provide scalable, cost-efficient solutions tailored to local markets. Through our award-winning Synechron FinLabs accelerators and strategic partnerships with AWS, Microsoft, Databricks, Salesforce, and ServiceNow, we enable clients to innovate fast and lead with confidence. For more information on the company, please visit our website or LinkedIn community.

Diversity, Equity, and Inclusion

Diversity & Inclusion are fundamental to our culture, and Synechron is proud to be an equal opportunity workplace and an affirmative-action employer. Our Diversity, Equity, and Inclusion (DEI) initiative ‘Same Difference’ is committed to fostering an inclusive culture – promoting equality, diversity and an environment that is respectful to all. We strongly believe that a diverse workforce helps build stronger, successful businesses as a global company. We encourage applicants from across diverse backgrounds, race, ethnicities, religion, age, marital status, gender, sexual orientations, or disabilities to apply. We empower our global workforce by offering flexible workplace arrangements, mentoring, internal mobility, learning and development programs, and more.

All employment decisions at Synechron are based on business needs, job requirements and individual qualifications, without regard to the applicant’s gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law.

Job Description

Are you a hands-on Senior Java Engineer with a passion for AI, high-performance systems, and large-scale data platforms?

We’re looking for an experienced engineer to help build the next generation Platform — the engine behind the calculation and distribution of globally recognized indexes.

This is a unique opportunity to work on mission-critical, data-intensive systems while shaping the adoption of AI-powered capabilities across internal platforms and client-facing products.

What you’ll do

  • Design, build, and maintain complex Java and Python applications
  • Develop and embed AI-powered features using LLMs, LangChain/LangGraph, and agentic AI frameworks
  • Architect scalable, distributed services for performance-critical index computation
  • Lead projects across the full lifecycle: design, development, testing, deployment, and production support
  • Drive engineering excellence through code reviews, mentoring, automation, and best practices
  • Troubleshoot production issues and provide Level 3 support

What we’re looking for

  • 10+ years of backend software engineering experience
  • Strong expertise in Core Java and Python
  • Experience with distributed systems, microservices, REST APIs
  • Strong knowledge of Oracle / SQL Server / Postgres
  • Hands-on with CI/CD, Jenkins/GitLab, Docker, Kubernetes
  • Solid experience in JVM performance tuning and optimization
  • Exposure to production-grade AI solutions and safe, scalable AI deployment practices

Nice to have

  • Experience in financial services / market data
  • Knowledge of Spring Boot, Redis, Kafka
  • Familiarity with BDD tools like Cucumber, JBehave, or Karate
  • Experience mentoring teams or leading engineering initiatives
  • Work on a high-impact global platform
  • Solve complex algorithmic and engineering challenges
  • Build the future of AI-driven financial technology
  • Collaborate with high-performing global teams

If you’re excited about building scalable backend systems and applying AI in production at enterprise scale, we’d love to hear from you.

#J-18808-Ljbffr…

Posted: June 20th, 2026