Senior Software Engineer | B2B FinTech StartUp

Senior Software Engineer FinTech Startup | London | Onsite

A high-growth FinTech startup is on a mission to simplify complex financial operations for some of the worlds most demanding industries. Theyre building a powerful platform that helps businesses streamline workflows, automate financial processes, and make smarter, data-driven decisions and theyre now looking for exceptional engineers to help take it to the next level.

Youll be joining a small, ambitious team at a formative stage, working directly on core systems that shape the products future. Expect autonomy, ownership, and the opportunity to solve technically interesting problems that have real-world impact.

This role would suit someone whos language-agnostic, product-minded, and thrives in a fast-paced startup environment. Whether you come from a background in Python, C#, Go, or JavaScript, what matters most is your ability to build clean, scalable systems and think critically about architecture and design.

Youll be responsible for:

• Building and scaling core platform features
• Collaborating closely with product and design teams
• Owning projects end-to-end, from concept to delivery
• Contributing to architectural decisions and technical direction

Youll bring:

• 5+ years of experience building and shipping software
• Strong fundamentals in software design, APIs, and databases
• Familiarity with cloud platforms (AWS, GCP, or Azure)
• An agile mindset and a genuine interest in building great products
• Experience in FinTech, SaaS, or other data-heavy systems is a plus

Whats on offer:

• Competitive salary + meaningful equity
• A collaborative, high-performance culture built on trust and ownership
• The chance to shape a fast-growing startups product and technology from the ground up

If youre driven by impact, enjoy solving complex technical challenges, and want to help shape the next generation of FinTech innovation this is the opportunity to do it.