Software Developer C#, JavaScript, React

Vermillion Analytics; Epsom; Hybrid; GBP 55,000 - 60,000; Full time

Job summary

A fast-growing UK SaaS company in Epsom is seeking a Full Stack Software Developer to design and maintain a flagship communication platform used by public sector services. Candidates should have 5+ years of experience, strong skills in .NET, C#, JavaScript, and a collaborative mindset. This role offers a competitive salary up to £60,000, hybrid working after probation, and opportunities for career progression.

Benefits

Competitive salary up to £60,000

Hybrid / remote working after probation

Health insurance after 1st year

Pension scheme

Flexible working hours

Clear career progression

Continuous learning opportunities

Central Epsom office

Qualifications

• 5+ years' software development experience, preferably in a SaaS environment.
• Strong proficiency in .NET, C#, JavaScript, and TypeScript.
• Experience with modern frameworks (React / Angular / Vue.js and Node.js / .NET).
• Solid knowledge of SQL and NoSQL databases.
• Familiarity with DevOps practices and CI / CD pipelines.

Responsibilities

• Build and maintain high-quality software solutions impacting public services.
• Collaborate with cross-functional teams to deliver technical solutions.
• Drive best practices and participate in architectural decisions.
• Optimise application performance, security, and scalability.
• Mentor through code reviews and contribute to a culture of continuous improvement.

Skills

Proficiency in .NET

C#

JavaScript

TypeScript

React

SQL

NoSQL databases

DevOps practices

Problem-solving skills

Job description

Software Developer - Full Stack - C#, JavaScript, React

Epsom

£55,000 - £60,000 | Full-time, Permanent | Hybrid / Remote (after probation)

No sponsorship offered

The Opportunity

Join a fast-growing UK SaaS company delivering innovative solutions to the Public Sector. We're looking for a Senior Software Developer who thrives on solving complex technical challenges in a collaborative environment.

You’ll be instrumental in designing, developing, and maintaining our flagship communication platform – a mature, trusted product serving thousands of users across government and local authorities.

What You’ll Do

• Build and maintain high-quality software solutions that directly impact public services
• Collaborate with cross-functional teams to define and deliver technical solutions
• Drive best practices and participate in architectural decisions
• Optimise application performance, security, and scalability
• Mentor through code reviews and contribute to a culture of continuous improvement

What We’re Looking For

Essential :

• 5+ years' software development experience (SaaS environment preferred)
• Strong proficiency in .NET, C#, JavaScript, and TypeScript
• Experience with modern frameworks (React / Angular / Vue.js and Node.js / .NET)
• Solid knowledge of SQL and NoSQL databases
• Familiarity with DevOps practices and CI / CD pipelines
• Excellent problem-solving skills and ability to thrive in a fast-paced environment

What’s On Offer

• Competitive salary up to £60,000
• Hybrid / remote working (after 3-month probation)
• Health insurance (after 1st year)
• Pension scheme
• Flexible working hours
• Clear career progression to Lead Developer roles
• Continuous learning through mentorship and training
• Central Epsom office (5 minutes from station)

Ready to Make an Impact?

If you’re passionate about technology and want to work on solutions that matter to millions of UK citizens, we want to hear from you