Principal Software Engineer | Polyglot Developer | Architecture | Technical Roadmaps | Fintech My client is a renowned global FinTech that, over the last two decades, has earned a reputation for reliability, innovation, and customer-focused service. With a strong presence in key financial hubs across the globe, including Europe, Asia, and the Middle East, my client serves over 2 million customers in over 100 countries. Their platform offers a wide array of trading products, from forex and commodities to indices and cryptocurrencies, catering to novice and experienced traders. My client is looking for a seasoned Principal Engineer to join their UK team. The Principal Engineer will be responsible for driving the development of high-impact projects, assisting management and other senior technical leaders in creating strategic roadmaps and driving priorities while maintaining a hands-on mindset. The right candidate will be a polyglot developer, with expertise in multiple languages, my client has a legacy codebase in Perl, Go and C. Specific coding language is not overly important, but someone coming in with knowledge of multiple languages and operating in a polyglot environment is. My client operates a hybrid working structure and would expect you in their Reading office twice a week. What you will do: Lead technical contributions to drive the organisation’s growth, maintain a hands-on approach and lead from the front. Develop future-proof software solutions, solve high-complexity technical challenges and lead architectural design. Innovate with architectural changes that address scaling and performance issues. Design roadmaps and strategies for key components and services, integrating them directly into existing systems. Establish coding standards, maintain technical documentation, and develop operational concepts and interfaces. Partner with executives to provide engineering expertise that informs strategic decisions. What you will Bring : 15 years of engineering experience with demonstrated leadership in high-stakes technical projects. Proficiency in working within a polyglot environment, with hands-on experience in multiple programming languages and frameworks. Expertise in cloud technologies such as AWS, Docker, Kubernetes, and Terraform. Proven skills in software development, with experience in front-end technologies and frameworks. Proven experience working in high-volume transaction environments, ideally within fintech or other data-intensive industries where scalability, security, and reliability are critical. Benefits Annual performance bonus Health benefits include private medical insurance, Death in Service benefit and Health Screening, Dental and Vision allowance Training and educational resources Quarterly appraisal and well-defined career/learning paths Great Place to Work and IIP Platinum-certified Team-building and bonding activities Competitive Annual Leave Maternity & Paternity Leave Well-stocked kitchen in the office Principal Software Engineer | Polyglot Developer | Architecture | Technical Roadmaps | Fintech