principal .net engineer jobs in Sunderland, Tyne and Wear

Senior Software Engineer / Back End Developer (C# .Net Core) *Newcastle onsite* to £130k+ Are you a back end focused Software Engineer with a strong academic background, looking to take the next step in your career? This is an opportunity to work on complex, high-impact systems at a growing FinTech scale-up with solid financial backing, a major Hedge Fund partnership, and ambitious plans for...

You will join our Simulation and Training sector at Broad Oak Works Portsmouth, part of BAE Systems Maritime and Land Defence Solutions, working on our MIMESIS product.

You will also provide technical guidance to the engineering team, working closely with System Design Authority, to develop and support MIMESIS for our customers.

Company DescriptionAssystem is an international company with one mission: accelerate the energy transition around the world.Every day, our 7,500 switchers located in 12 countries (Europe, Middle East, Pacific Asia & Africa) connect their six thousand billion neurons to tackle the task of the century: switching to low-carbon energy.We are a collective committed to the actors who are making the...

You will be given complete ownership of your business area and the opportunity to work on the full project life cycle.

Job title: Civil Engineer – Water company Type: Salaried, PAYE. Salary: Dependent on experience, skills and location An introduction to our unique company... Waterman Aspen welcomes engineers and technical specialists to make their mark by working on some of the biggest infrastructure projects or in delivering professional services across the UK on a secondment basis. Our diverse client base...

Software Engineers – Newcastle | Up to £120k + Package | On-site A newly formed technology venture is building a world-class software engineering team right here in Newcastle — and they're looking for the brightest minds to join them. If you're Russell Group educated, passionate about programming, and thrive on solving complex problems with impact — this is a chance to work in an environment...

About Us We're a fast-growing technology company building robust, scalable software platforms that power critical services for clients around the world. Our systems process high volumes of data, operate with demanding performance standards, and continuously evolve to meet new business challenges. We're looking for engineers who enjoy solving complex problems, writing clean and maintainable...

Graduate Software Engineer Newcastle City Centre - 5 days a week onsite Immediate starts available, and also March 2026 starters. Salaries paying £30k - £40k + benefits. About the Role A newly formed, high-impact technology team based in the heart of Newcastle upon Tyne is looking for Graduate Software Engineers. This is a unique opportunity to get involved from the ground up, working on...

You will help shape architecture, own deliverables, and mentor a small team of developers while collaborating with product and business stakeholders to deliver secure, scalable web applications used by both B2B and B2C customers. Key responsibilities - Lead, coach and mentor a development team; run code reviews and support training and development.

Senior Software Engineer/Staff Software Engineer (Hybrid) Location: Newcastle-upon-Tyne (2 days a week) Compensation: Up to £70k + Benefits Are you ready to make a meaningful impact on a platform that handles over 200,000 transactions per minute and serves more than 1 million active users each month? Join our client's Product Engineering team and help design, build, and scale modern,...

C# Developer / Full Stack Engineer (.Net TypeScript AWS) Sunderland / WFH to £55k Are you a C# developer who enjoys working across the full tech stack with a range of languages and technologies? You could be progressing your career in a hands-on C# Developer role at a at a growing games / gambling site, whilst enjoying a range of benefits and perks, alongside continual learning and self...

Job title: Senior Civil Engineer – Water Company Type: Salaried, PAYE. Salary: Dependent on experience, skills and location An introduction to our unique company... Waterman Aspen welcomes engineers and technical specialists to make their mark by working on some of the biggest infrastructure projects or in delivering professional services across the UK on a secondment basis. Our diverse...

Graduate Software Engineer / Developer *Newcastle onsite* £33k+ - Start March or September 2026 Are you a bright, ambitious technologist with a top class education looking for an opportunity to join a tech start-up? You could be progressing your career at a rapidly growing Fintech that have secure backing and an established Hedge Fund client as a partner, gaining valuable financial trading...

Software Developer Permanent | Highly Competitive Salary + Exceptional Benefits Our client is a newly established technology venture backed by two global leaders in consulting and investment management. They're building a world-class engineering hub in the North East to deliver complex, high-impact software systems that underpin global financial and strategic operations. This is an opportunity...

The ideal candidate will be familiar with the full software design life cycle. They should have experience in designing, coding, testing and consistently managing applications They should be comfortable coding in a number of languages and have an ability to test code in order to maintain high-quality code. Responsibilities - Design, code, test and manage various applications - Collaborate with...

Software Engineer Location: Newcastle-upon-Tyne (2 days a week) Compensation: Up to £60k + Benefits Are you ready to make a meaningful impact on a platform that handles over 200,000 transactions per minute and serves more than 1 million active users each month? Join our client's Product Engineering team and help design, build, and scale modern, high-performance systems that power a thriving...

You will be working alongside some of the best developers within the finance space on this project. Candidates must have a degree from a Russell group university, please do not apply if you do not have this. £50k - £140k + 10% Bonus + Pension

Full Stack Developer / Engineer (C# TypeScript AWS) Sunderland / WFH to £55k Opportunity to progress your career in a hands-on Full Stack Developer role at a at a growing games / gambling site, whilst enjoying a range of benefits and perks. As a Full Stack Developer you'll build captivating full stack web applications across all backend services and REST APIs that form the core platform e.g....

Job title: Design Manager – Water Company Type: Salaried, PAYE. Salary: Dependent on experience, skills and location An introduction to our unique company... Waterman Aspen welcomes engineers and technical specialists to make their mark by working on some of the biggest infrastructure projects or in delivering professional services across the UK on a secondment basis. Our diverse client base...

Software Developer / Engineer *Newcastle onsite* to £70k+ Are you a bright, ambitious Software Developer looking for an opportunity to progress your career, working on complex and interesting systems in a role where you can learn and develop your skills? You could be joining a FinTech start-up, they have secure backing and an established Hedge Fund client as a partner. As a Software Developer...