Senior Software Engineer

Vivo Talent; Cardiff; Hybrid; GBP 50,000 - 60,000; Full time

Job summary

A growing technology company in Cardiff is seeking a talented Software Engineer with strong experience in C# and React. In this hybrid role, you will be responsible for building API-driven microservices, developing modern user interfaces, and influencing technical decisions. The position offers opportunities to mentor junior developers and contribute to key architectural discussions, making it ideal for problem solvers who value code quality and teamwork. Competitive salary between £50,000 and £60,000 is available.

Qualifications

• Strong hands-on experience with C# and/or React.
• Comfortable working across modern and legacy systems.
• A problem-solver who takes ownership and cares about code quality.

Responsibilities

• Build and evolve C# microservices and API-driven backend services.
• Develop modern React user interfaces and end-to-end features.
• Support production systems and help resolve defects and performance issues.

Skills

C#

React

Problem-solving

Communication

Agile methodologies

Job description

Software Engineer / C# / React / APIs / Software / Cardiff / Permanent / Hybrid / £50,000 - £60,000

Vivo Talent is working with a business that has huge growth plans for 2026. We're actively working with them to recruit multiple Software Engineers into their team, with strong hands‑one experience C# and/or React to help build and evolve their strategic applications. You’ll be working on API‑driven microservices, modern React UIs and scalable systems that power real customer journeys.

This is a genuine hands‑on role with plenty of scope to influence technical decisions, shape how they build software and mentor junior engineers. If you enjoy solving complex problems, collaborating across teams and taking ownership of high‑impact work, you’ll feel right at home.

What you’ll do

• Build and evolve C# microservices and API‑driven backend services
• Develop modern React user interfaces and end‑to‑end features
• Troubleshoot across the stack and deliver pragmatic, customer‑focused solutions
• Contribute to architectural decisions and technical discussions
• Support production systems and help resolve defects and performance issues
• Collaborate closely with engineers, product owners, and stakeholders
• Mentor junior developers through pairing, reviews, and knowledge sharing

What we’re looking for

• Strong hands‑on experience with C# and/or React
• Comfortable working across modern and legacy systems
• A problem‑solver who takes ownership and cares about code quality
• Clear communicator who works well in cross‑functional teams
• Experience in agile environments (Scrum, Kanban)