AI-Driven Full-Stack .NET Engineer (Hybrid)

Biller Genie; Belfast City District; Hybrid; GBP 60,000 - 90,000; Full time

Benefits offered by this job

Private health insurance

Group life death benefit

Pension with 5% employer contributions

25 days holiday + 10 holidays

Job summary

Biller Genie is seeking a Full Stack .NET Engineer in Belfast to join an AI-enabled engineering team. You’ll design, implement, test, and deploy complex fintech solutions using C#, ASP.NET MVC, and Web API.

You will contribute across the full SDLC and help shape AI-driven developer experiences with skills, agents, and harnesses. The role demands strong collaboration and a track record of delivering robust software.

Qualifications

• 2+ years hands-on commercial .NET development experience.
• Proficient in C#, ASP.NET MVC, and Web API.
• Understanding of design patterns and OO design.
• Experience with HTML, JavaScript, CSS (jQuery).
• Familiar with cloud tech (Azure/AWS/GCP) and source control.
• Legal right to work in the UK.

Responsibilities

• Design and build future-proof, scalable solutions.
• Collaborate with senior engineers from idea to deployment.
• Refine requirements and deliver software on schedule.
• Balance speed and quality; address bugs with support.
• Develop features via agentic tooling and AI workflows.
• Contribute AI prompts, skills, and workflow improvements.

Skills

C#

Java

OO programming

Web API

HTML/CSS/JavaScript

SQL databases

Cloud (Azure/AWS/GCP)

Git / SVN / TFS

Design patterns

AI tooling / agentic engineering

Communication & collaboration

Education

BSc or MSc in Computer Science / related

Tools

Git

Azure Functions

CI/CD tooling

Job description

Biller Genie is seeking a Full Stack .NET Engineer in Belfast to join an AI-enabled engineering team. You’ll design, implement, test, and deploy complex fintech solutions using C#, ASP.NET MVC, and Web API.

You will contribute across the full SDLC and help shape AI-driven developer experiences with skills, agents, and harnesses. The role demands strong collaboration and a track record of delivering robust software.