Principal Engineer (Full Stack) - Go / GCP / AI

Synthix is building a SaaS native marketplace of financial solutions-a tech first platform that plugs into client workflows and connects them to an ecosystem of partners (banks, PSPs, ERPs, and data providers) through a single integration. We combine institutional credibility and reach with startup level engineering agility. We are deliberately strengthening our engineering capability with inspirational, hands on technical leadership-people who ship, raise the bar on quality, and deliver enterprise grade reliability at fintech speed.

This is a builder role. You'll be a Principal level engineer who codes regularly, sets technical direction through doing, and helps scale a high performance product engineering culture.

Do you have experience in Terraform?, * Principal or Staff Engineer experience in fintech or high scale SaaS, including regulated environments, with a proven record of personally shipping core platform or product capabilities (marketplaces, integrations, partner ecosystems, developer platforms)

• Strong production expertise in Go and modern backend engineering, including APIs, microservices, event driven and distributed systems, data handling, SRE practices, IaC (e.g. Terraform), and Kubernetes
• Extensive hands on experience running production workloads on Google Cloud Platform (GCP), covering security, networking, IAM, deployments, observability, and cloud native operations
• Full stack capability, taking product requirements from architecture through implementation to production operations
• Recent hands on coding experience (last 6-12 months), with deep debugging skills, systems thinking, and ownership in live environments; experience implementing AI features in production (e.g. RAG, tool integration, evaluation, monitoring, model/vendor selection)
• Clear evidence of engineering passion: curiosity, craftsmanship, continuous learning, a strong bias to build, and a focus on simplifying complexity and improving developer experience in fast paced, regulated fintech or large-scale SaaS contexts

Pulled from the full job description

• Employee discount
• Company pension
• Paid volunteer time
• Private medical insurance
• Discounted gym membership, A healthy, engaged and well-supported workforce are better equipped to do their best work and, more importantly, enjoy their lives inside and outside the workplace. That's why we are committed to providing an environment with your development and wellbeing at its centre.

You can expect:

• Hybrid Working - we understand that employee expectations and preferences are changing. We have implemented a model that enables eligible employees to work remotely for a part of their working time and reach a working pattern that works for them
• Competitive salary and non-contributory pension
• 30 days' holiday plus bank holidays, with the option to purchase additional days
• Life Assurance and Private Healthcare for you and your family
• A range of flexible benefits including Retail Discounts, a Bike4Work scheme and Gym benefits
• The opportunity to support a wide ranging CSR programme + 2 days' volunteering leave per year

Your key responsibilities

• Develop production ready features in Go, delivering robust backend services and APIs alongside full stack solutions spanning UI, data, performance, and operability
• Establish and continuously improve engineering practices including service templates, libraries, developer experience (DX), and CI/CD pipelines
• Provide technical leadership by clarifying architecture decisions, navigating trade offs, and defining clear "golden paths."
• Mentor engineers to improve code quality, system design, debugging skills, and readiness for production deployment
• Drive reliability and operational excellence through improved observability, incident response, resilience (SLOs, error budgets, postmortems), and scalable delivery processes
• Build AI driven features with measurable impact, focusing on evaluation, feedback loops, safety, cost controls, and practical AI patterns such as retrieval, workflow automation, copilots, and intelligent triage

For over 150 years we have been there for our clients every step of the way. Our purpose: ‘Dedicated to our clients’ lasting success and financial security at home and abroad’ guides our vision and strategy, and is brought to life by our culture. With a global presence in about 60 countries, and a diverse workforce of more than 90,000 people, we know that each individual’s daily actions shape our culture. 

Deutsche Bank Technology in Berlin

DB Technology is a global team of tech specialists, spread across multiple trading hubs and tech centres. We have a strong focus on promoting technical excellence – our engineers work at the forefront of financial services innovation using cutting-edge technologies.

Our Berlin location is our most recent addition to our global network of tech centres and growing strongly. We are committed to building a diverse workforce and to creating excellent opportunities for talented engineers and technologists. Our tech teams and business units use agile ways of working to create #GlobalHausbank solutions from our home market.