MillTech
Senior Software Engineer
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Senior Software Engineer
Senior Software Engineer (Full Stack & AI-Driven Fintech)
About the Role
MillTech is a leading European fintech company specialising in advanced FX and cash management solutions, empowering fund managers, institutions, and global corporates with automation, integration, and best-execution strategies.
As a fast-growing team, we’re at the forefront of AI-driven software engineering—hiring a Senior Software Engineer to build, modernise, and scale our core trading backbone, middle/back-office processes, and tech stack. This is a chance to shape scalable fintech infrastructure while collaborating in a collaborative, AI-first environment.
Key Responsibilities
- Ownership of full-stack development (end-to-end solutions) in a smaller, high-impact team
- Drive architecture decisions to support our micro-service, event-driven architecture
- Design and develop cloud-native solutions (AWS/Azure) with scalability and performance in mind
- Reduce technical debt while delivering innovative features aligned with FX trading automation and operational efficiency
- Integrate emerging technologies (AI/ML, event streaming, APIs) into our platform
- Support and continuous improvement of our tech infrastructure
- Foster a culture of engineering excellence through mentorship and process optimisation
- Embrace AI-driven workflows in code review, debugging, and system design
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Required Skills & Experience
- 5+ years’ experience in C#/.NET development
- Expertise in SQL databases (design, optimisation, query tuning)
- Cloud certifications or practical experience in AWS or Azure (including serverless, containers, and scalability patterns)
- Experience with microservices and event-driven architectures (Kafka, RabbitMQ, or similar)
- Hands-on software development lifecycle (SDLC) mastery—from design and delivery to production support
- Experience leveraging AI tools (LLM-assisted coding, automation, testing, or DevOps)
Who You Are (Culture Fit)
We prioritise technical excellence and people skills. Ideal candidates embody:
- Strong communication— translating complex ideas clearly and listening collaboratively
- Collaborative & growth-minded— actively sharing knowledge and helping teammates thrive
- Adaptability— thriving in dynamic environments with evolving priorities
- Comfort with ambiguity— viewing challenges as opportunities to innovate
- Self-starter mindset— asking the right questions and driving solutions forward
- Appreciation for AI integration— excited to explore AI’s role in faster, smarter development
Nice to have (but not required):
- Experience in financial markets, FX trading, or fintech ecosystems
- Background in startup/small-team environments with high ownership
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Why Join MillTech?
We offer a supportive, inclusive, and results-driven work environment with:
✅ Competitive compensation (£85k–£100k) + annual reviews ✅ 25+ paid annual leave days (plus 1 day per year of service) ✅ Unlimited learning opportunities (technical courses, certifications, mentorship) ✅ Hybrid/remote flexibility— balancing remote work with London studio access (if preferred) ✅ Comprehensive benefits package:
- Medical & dental insurance
- Electric Vehicle Scheme + Cycle to Work
- Enhanced maternity/paternity leave
- 1 paid charity day per quarter
- Perk stipends, health perks, and more
Diversity & Inclusion
MillTech is committed to building a diverse, inclusive team that drives innovation. We actively encourage applicants from all backgrounds and experiences—your unique perspective is valuable to us. If you’re passionate about coding, fintech, and AI, we’d love to hear from you.
Ready to apply?
✅ Upload your CV via [MillTech Careers]([application link]) ✅ Our hiring team will reach out for a quick chat about steps to join us.
Let’s build something extraordinary together. 💡
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