Senior .NET Engineer - AI-First FinTech Backend

Capital Markets Gateway; Republic (MO); On-site; USD 56,000 - 74,000; Full time

Benefits offered by this job

Unlimited vacation

Meal vouchers

Multisport card

Pension contributions

Language courses

Centrally located Brno office

Bi-weekly team lunches

Tech courses and conferences

Top of the line MacBook

Team building events

Flexible working hours

Job summary

Capital Markets Gateway in Brno is seeking a Senior .NET Engineer to design, develop, and maintain robust backend systems and APIs for the financial industry. You will collaborate with frontend, product, and QA teams to ensure data flow, reliability, and efficient service integration.

The role emphasizes performance optimization, secure architecture, and deployment best practices in an AI-driven development flow, with occasional front-end work as needed.

Qualifications

• Must be based in the Czech Republic.
• C#, ASP.NET Core: 3+ years.
• Software Engineering: 5+ Years.
• English level - C1 or C2.
• Fintech experience is a plus.
• Experience developing AI-powered applications is a plus.

Responsibilities

• Operate as a product engineer focused on solving real user and business problems, not clearing a backlog.
• Work in an AI-first development flow. Use Claude to explore approaches, validate ideas, and build new solutions.
• Primarily focused on backend: design, develop, and maintain scalable services with .NET 10 and GraphQL; front-end work when needed.
• Aligned to a product team and typically pair with another engineer on projects, review each other’s work, and ship together.
• Uphold a high-quality bar with tests at unit, integration, and end-to-end levels, reviewed by humans before shipping.
• Drive technical improvements across the codebase, identify friction, and drive adoption of changes.
• Serve as the first DataLab hire in Czechia, collaborate with Brno team, and align to US Pacific hours 2-3 days/week.
• Participate in on-call rotation and respond to production incidents.

Skills

English level (C1/C2)

Fintech experience

AI-powered applications

Tools

C#

ASP.NET Core

Job description

Capital Markets Gateway in Brno is seeking a Senior .NET Engineer to design, develop, and maintain robust backend systems and APIs for the financial industry. You will collaborate with frontend, product, and QA teams to ensure data flow, reliability, and efficient service integration.

The role emphasizes performance optimization, secure architecture, and deployment best practices in an AI-driven development flow, with occasional front-end work as needed.