C# Developer

IT (Information Technology)

Permanent contract

Warsaw, Poland

Hybrid

Reference 26000DET

Start date Immediately

Publication date 2026/05/28

Responsibilities

Our Market Technologies and Operations (MTO) division is part of the Global Business Service Unit in Société Générale. We support a wide range of activities, from booking and pricing to contribution and full front-to-back processes for Fixed Income, Currencies, and Commodities products.

The Trading Tool team is responsible for developing and maintaining front-office trading applications that are used daily by traders for market making.

As a C# Developer you will play a vital role in the full software development life cycle (SDLC) - designing, building, testing, and deploying high-performance applications. You will work closely with a distributed team (based in France and Poland) in a fast-paced, collaborative environment were English is the main working language.

Your future scope of responsibility will cover:

Building, delivering, and running applications, using craftsmanship and best coding practices
Developing and supporting features in a functional application chain
Breaking down technical and functional requirements into detailed user stories and collaborating closely with the product owner and business analysts
Delivering and supporting the application via continuous delivery (DevOps)
Writing unit tests, reviewing the code to be delivered and contributing to non-regression testing
Maintaining and improving production support for existing features
Recommending and implementing process and performance improvements
Providing clear, consistent updates to clients and management
Working with the following tech stack: C#, .NET, .NET Framework, ElasticSearch, WPF, MS SQL / PostgreSQL, REST WebAPI, Github, Jenkins, TeamCity, RabbitMQ, Kafka
Methodologies: Agile, TDD

Some milestones to be expected this year:

Migration to .NET8
Opportunistic migration from heavy client to REST API & web User Interface

Profile required

You will be best suited for this role if:

You have at least 3 years of professional experience in backend software development (C#)
You are proficient in multi-threaded programming and have worked with microservices architecture
You have solid experience with WPF and a strong knowledge of its API design as well as best practices of implementation
You communicate in English confidently
You are a team-player, enjoying knowledge sharing, and are proactive in problem-solving

Why join us

Your future with Societe Generale will include:

Work in a pleasant atmosphere as part of an international team in a brand-new office in the center of Warsaw, designed with facilities for people with disabilities
An active role in an international structure and the opportunity for growth
Access to educational platforms and language courses
Stability
Competitive salary based on seniority and skills
Support in quick adaptation in the company
Extraordinary health package with extensive dental care
Hybrid work (3 office days per week) and one-time bonus for home office equipment
Even more benefits such as meal allowance, holiday fund, sports card and insurance

*Please be informed that we will be accepting only resumes in English

Business insight

At Société Générale, we are convinced that people are drivers of change, and that the world of tomorrow will be shaped by all their initiatives, from the smallest to the most ambitious.

Whether you’re joining us for a period of months, years or your entire career, together we can have a positive impact on the future. Creating, daring, innovating and taking action are part of our DNA.

If you too want to be directly involved, grow in a stimulating and caring environment, feel useful on a daily basis and develop or strengthen your expertise, you will feel right at home with us!

Still hesitating?

You should know that our employees can dedicate several days per year to solidarity actions during their working hours, including sponsoring people struggling with their orientation or professional integration, participating in the financial education of young apprentices, and sharing their skills with charities. There are many ways to get involved.

Diversity and Inclusion

We are an equal opportunities employer and we are proud to make diversity a strength for our company. Societe Generale is committed to recognizing and promoting all talents, regardless of their beliefs, age, disability, parental status, ethnic origin, nationality, gender identity, sexual orientation, membership of a political, religious, trade union or minority organisation, or any other characteristic that could be subject to discrimination.

C# Developer

Permanent contract

Warsaw, Poland

Hybrid

Responsibilities Profile required Why join us Business insight Diversity and Inclusion

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