Principal Software Engineer

Candour; Manchester; On-site; GBP 76,000 - 90,000; Full time

Job summary

A high-growth tech business in Manchester is seeking a Principal Software Developer to shape architectural decisions and drive integrations for a scalable product. The ideal candidate will have deep expertise in .NET and ReactJS, with a strong background in delivering production-grade software. Responsibilities include designing, building, and shipping high-quality software across various tech stacks. This role offers competitive compensation and a modern engineering environment.

Benefits

Strong benefits

Flexible working hours

Qualifications

• Deep expertise in .NET (C#, ASP.NET) with strong ReactJS experience.
• Proven track record delivering production-grade software end-to-end.
• Experience integrating AI/LLM features into real systems.
• Strong SQL/T-SQL, Redis, ElasticSearch/OpenSearch knowledge.
• Comfortable leading technical discussions and validating approaches.

Responsibilities

• Design, build, and ship high-quality software across C#, ASP.NET, ReactJS, Node.js, SQL Server.

Skills

.NET (C#, ASP.NET)

ReactJS

SQL/T-SQL

Redis

ElasticSearch/OpenSearch

AI/LLM integration

Job description

Job Description

Principal Software Developer – Manchester (central) 3 days a week in office with flexible start/finish – strong benefits – up to £90,000 (flexible for the right person)

I’m working with a high‑growth tech business looking for a Principal Software Developer to take a leading, hands‑on role across their platform. You’ll design and deliver complex features, shape architectural decisions, and drive AI/LLM integrations across a product used at serious scale. Big engineering culture, modern stack, and a tech‑driven leadership team.

What you’ll bring

• Deep expertise in .NET (C#, ASP.NET) with strong ReactJS experience
• Proven track record delivering production‑grade software end‑to‑end
• Experience integrating AI/LLM features into real systems
• Strong SQL/T‑SQL, Redis, ElasticSearch/OpenSearch, and distributed systems knowledge
• Comfortable leading technical discussions and validating approaches
• Strong collaborator across Product, Delivery, QA, and DevOps

What you’ll do

• Design, build, and ship high‑quality software across C#, ASP.NET, ReactJS, Node.js, SQL Server