Software engineer c# Work, Jobs in Old Windsor, Brk (with Salaries)

C# Software Engineer
CGI —Reading
- Full-time
- Azure
- Software development
- Communication skills
Quick apply
Associate Software Engineer
Valorence Limited —London
- From £35,000 a year
- Full-time
- AWS
- Bachelor's degree
- Linux
Quick apply
4d
Software Engineer
Sing King Ltd —London
- £45,000 - £60,000 a year
- Full-time
- Hybrid work
- JavaScript
- APIs
- Python
- Work from home
- Employee discount
Quick apply
11d
Senior Software Engineer
JFA Medical —London
- £100,000 a year
- Full-time
- Computer Science
- Engineering
- AWS
Quick apply
Software Developer
Artech3D Ltd —London
- £43,000 - £55,000 a year
- Full-time
- Azure
- Java
- SQL
Quick apply
13d
Python Developers
CGI —London
- Full-time
- DevOps
- AWS
- APIs
Quick apply
Software Engineers
CGI —London
- Full-time
- Java
- AWS
- C++
Quick apply
Full Stack Engineer
Sing King Ltd —London
- £45,000 - £60,000 a year
- Full-time
- Hybrid work
- JavaScript
- APIs
- Python
- Work from home
- Employee discount
Quick apply
11d
Software Engineer
CGI —London
- Full-time
- DevOps
- Software development
- APIs
Quick apply
Full Stack Developer
System Simulation —London
- £32,000 - £42,000 a year
- Full-time
- Hybrid work
- English
- Bachelor's degree
- JavaScript
Quick apply
Software Engineer
Linux Recruit —London
- £75,000 - £90,000 a year
11d
Software Engineer IV
Indeed —London
- £98,000 - £148,000 a year
- Full-time
- Doctoral degree
- Computer Science
- Engineering
- Annual leave
- Life insurance
Quick apply
Web Developer
Global Study UK —London
- Full-time
- Bachelor's degree
- In-person
- Referral programme
- Sick pay
Quick apply
Graduate Software Engineer
BAE Systems —Frimley
- £34,000 a year
- Computer Science
- Java
- Master's degree
Software Engineer
Person Centred Software Ltd —Guildford
- £45,000 - £60,000 a year
- Full-time
- Azure
- SQL
- APIs
Quick apply
Software Engineer
JOBEE RECRUITMENT LTD —London
- £27,342.07 - £83,616.84 a year
- Full-time
- Hybrid work
- Azure
- Java
- SQL
Quick apply
11d
Software Engineer
Gaints Tech —London
- £35,450 - £82,560 a year
- Full-time
- Windows
- Java
- AWS
- Free parking
- Sick pay
Quick apply
Associate Software Engineer
Gaints Tech —London Bridge Station
- £28,487 - £69,566 a year
- Full-time
- Hybrid work
- Azure
- Computer Science
- Java
- Work from home
Quick apply
Software Developer
IT VALLEY (LONDON) LIMITED —Egham
- £42,000 - £45,000 a year
- Full-time
- Azure
- Oracle
- System design
Quick apply
9d
Software Engineer - Integrations
Stream —London
- £55,000 - £95,000 a year
- Hybrid work
- SQL
- AWS
- APIs
- Annual leave
Quick apply
1d

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C# Software Engineer

CGI -
Reading

Quick apply

Job details

Permanent | Full-time

Benefits

Company pension

Qualifications

ASP.NET
Azure
C#
Microsoft SQL Server
Application development
Software development
Communication skills
Debugging

Full job description

At CGI, you’ll play a pivotal role in building and sustaining secure, high-impact applications that underpin critical services for our clients. As a C# Developer, you’ll contribute to the full application lifecycle, combining hands-on development with 4th line support to ensure resilient, high-performing systems. Working within a collaborative, ownership-driven culture, you’ll help deliver measurable outcomes, strengthen long-term client relationships, and shape solutions that make a real difference in a highly secure environment.

CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named a UK ‘Best Employer’ by the Financial Times. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a CGI Partner not just an employee. We are committed to inclusivity, building a genuinely diverse community of tech talent and inspiring everyone to pursue careers in our sector, including our Armed Forces, and are proud to hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant. Join us and you’ll be part of an open, friendly community of experts. We’ll train and support you in taking your career wherever you want it to go.

Due to the secure nature of the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance. This is a full-time onsite position based in our Reading office, five days per week. UK sole nationality is required.

Your future duties and responsibilities

In this role, you will develop, maintain, and support a secure application using C#, ASP.NET, and SQL Server, taking ownership of both new functionality and the stability of a mature system. You’ll work closely with colleagues and, where appropriate, directly with the client, building trust through clear technical communication and reliable delivery. Supported by experienced peers, you’ll grow into a trusted technical authority and subject matter expert for the customer environment.

You will contribute to continuous improvement by applying strong software development practices, diagnosing complex issues, and ensuring solutions meet the highest security and quality standards.

Key responsibilities include:

Develop & enhance secure applications using C# and ASP.NET

Support & resolve complex 4th line application issues

Analyse, debug, and improve mature production systems

Manage code and work items using Azure DevOps

Collaborate with stakeholders and communicate technical solutions clearly

Contribute to best practice within a highly secure delivery environment

Required qualifications to be successful in this role

You will bring solid experience in Microsoft-based application development, with the ability to support and enhance secure, business-critical systems. You should be comfortable working with established codebases, applying strong debugging skills, and communicating effectively with both technical and non-technical stakeholders.

Essential qualifications:

Strong experience with C# and ASP.NET

Proven experience using SQL Server

Familiarity with the Microsoft development toolchain

Good understanding of modern software development practices

Experience supporting and debugging mature applications

Ability to work effectively in a secure environment

Clear and confident technical communication skills

#LI-SB2

Together, as owners, let’s turn meaningful insights into action.

Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you’ll reach your full potential because…

You are invited to be an owner from day 1 as we work together to bring our Dream to life. That’s why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company’s strategy and direction.

Your work creates value. You’ll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.

You’ll shape your career by joining a company built to grow and last. You’ll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.

Come join our team—one of the largest IT and business consulting services firms in the world.

Quick apply

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