Senior .NET Developer w Warszawa, Polska is listed on Jobeax. Browse 110,000+ vacancies available.
Talan is an international consulting group specializing in innovation and business transformation through technology. With over 7,200 consultants in 21 countries and a turnover of €850M, we are committed to delivering impactful, future-ready solutions.
Talan at a Glance
Headquartered in Paris and operating globally, Talan combines technology, innovation, and empowerment to deliver measurable results for our clients. Over the past 22 years, we’ve built a strong presence in the IT and consulting landscape, and we’re on track to reach €1 billion in revenue this year.
Our Core Areas of Expertise
Data & Technologies: We design and implement large-scale, end-to-end architecture and data solutions, including data integration, data science, visualization, Big Data, AI, and Generative AI.
Cloud & Application Services: We integrate leading platforms such as SAP, Salesforce, Oracle, Microsoft, AWS, and IBM Maximo, helping clients transition to the cloud and improve operational efficiency.
Management & Innovation Consulting: We lead business and digital transformation initiatives through project and change management best practices (PM, PMO, Agile, Scrum, Product Ownership), and support domains such as Supply Chain, Cybersecurity, and ESG/Low-Carbon strategies.
We work with major global clients across diverse sectors, including Transport & Logistics, Financial Services, Energy & Utilities, Retail, and Media & Telecommunications.
Job Description
As a Senior developer you will be responsible for ensuring the team delivers high quality software, using industry best practices for code management, testing and CI/CD. This is an exciting opportunity to build a new greenfield solution, working as part of a small team, to help the business improve their electronic trading capabilities within the fixed income space. The platform itself is built on top of AWS and makes use of many services within the AWS ecosystem.
Job Responsibilities / Role
Take responsibility for the software delivery by ensuring quality and scope expectations are met.
Contribute and take ownership of the technical design and ensure all aspects of the system architecture are well documented.
Work closely with partner technology teams and to collaborate effectively.
Qualifications
Technical Skills Required:
Very deep understanding of .Net/.Net Core and solid understanding of OO principles.
Experience in https://jobeax.com/link/GrYTXLZMpxEMJknV Core Web API and RESTful API techniques.
Solid understanding of and experience with multi-threading and asynchronous programming.
Familiar with SQL and NoSql databases.
Hands‑on experience with containerisation solutions like Docker.
Experience designing and building API based service oriented or microservice architectures.
Diligent with automated testing i.e. NUnit/Moq/Cucumber etc.
Strong experience with middleware messaging services like Rabbit MQ, TIBCO, SignalR etc.
Solid experience with continuous integration and continuous delivery tools like Git, TeamCity etc.
Nice to have Skills:
Experience configuring continuous integration and continuous delivery tools.
Experience using AWS platform.
Qualities & Skills
Energetic, motivated and determined.
Pragmatic and results-oriented.
Adaptable to diverse set of technical responsibilities.
Excellent analytical and problem solving skills.
Productive and able to manage time effectively.
Strong written and verbal communication skills.
Qualifications
Bachelor degree in Computer Science / Information Technology or a related field, or substantial practical experience of software delivery at an advanced level.
Additional Information
What do we offer you?
Hybrid position based in Warsaw, Poland.
Permanent, full-time contract with career development opportunities.
Chance to work in a challenging, multicultural environment with international projects.
Exposure to large-scale financial IT systems and cross-country operations.
Training opportunities to develop new skills in finance, technology, and data management.
Talan Spain’s commitment to non-discrimination based on gender, race, ideology, or any other reason, in accordance with the company’s "Equality Plan" and the current regulations on gender equality between women and men (Royal Decree-Law 6/2019).
... ecosystem - The Jit community will bring you a nice time during regular integration meetings Project Development and maintenance of backend applications based on .NET, including the design and development of microservices and distributed systems. The project involves building and integrating APIs supporting business applications ...
... onboardingu z biura we Wrocławiu, - stawka do 145 zł/h w oparciu o umowę B2B. Kompetencje wymagane do realizacji usług: - minimum 5-letnie doświadczenie w roli .Net Developera, - znajomość narzędzi AI (np. GitHub Copilot, modele LLM), - bardzo dobra znajomość C# oraz platformy .NET (w wersji 8+), - dobra znajomość Angulara ...
140 PLN/h | Senior C# / .NET Developer Szukam doświadczonego seniora do projektu dla globalnego gracza z branży Retail Media. Klient tworzy duże systemy i platformy reklamowe dla e-commerce. Dołączysz do 6-osobowego zespołu, który działa jako samodzielny unit technologiczny. Będziecie budować od zera Core User Platform ...
Work model: 100% remote (candidates must be based in Poland) Contract type: B2B Industry: Banking / Investment Banking We are looking for an experienced Senior .NET Developer to join a distributed engineering team working on critical banking systems. The role focuses on extending and modernising applications used across ...
We are seeking a Senior .NET / Blazor Developer with deep hands-on expertise in Blazor Server and Razor components to design and build real-time, interactive web applications. The consultant will deliver resilient, performant server-side UI experiences using SignalR, reusable component libraries, and robust state management ...
UNITED States Digital Space LLC is seeking a skilled .NET developer with strong AWS and database experience to design, build, and optimize software solutions. You will write clean, scalable code and collaborate across cross-functional teams to define project requirements. The role involves troubleshooting, leading technical ...
Locate yourself or provide an exact address Car - Public transport - Bike - On foot - Technologies we use Expected - UiPath - .NET - Python - AWS Optional - Power Automate Your responsibilities - Design, develop, test, and implement intelligent RPA bots interacting with multiple applications and systems. - Independently ...
Senior Fullstack Developer Responsibilities: Design and develop parts of a complete enterprise-grade software system Translate requirements (user stories) into software design. Produce technical documentation Propose technical solutions for business needs and technical problems Optimize the produced software from the performance, ...
... provide continuous support. Due to our ongoing growth and the large number of recruitment projects we undertake for our partners, we are currently looking for: Senior Fullstack Developer Responsibilities: Design and develop parts of a complete enterprise-grade software system Translate requirements (user stories) into software ...
... stanowiska Praktyczne doświadczenie w roli Tech Lead / Team Lead lub gotowość do wejścia w tę rolę połączona z popartym sukcesami doświadczeniem jako Senior .NET Developer Głęboka, ekspercka wiedza z zakresu .NET oraz wzorców architektonicznych (Event-Driven, Microservices) Praktyczne i zaawansowane doświadczenie z Kubernetes ...
... distributed between London, Paris and Kraków, delivering clean, maintainable code while helping migrate our back‑end services to a modern event‑driven architecture. Senior C# Developer Responsibilities: Design, develop, and evolve high‑performance C#/.NET services that power XVA, liquidity and cash‑forecasting workflows. Contribute ...
... zmiana wpływa na cały system — od API i logiki biznesowej, przez dane i komunikację asynchroniczną, aż po frontend. Szukamy osoby backend-first, bardzo mocnej w .NET/C#, która jednocześnie potrafi wejść w React/TypeScript i dowieźć funkcjonalność obejmującą cały stack. Stack technologiczny .NET 9 / C# 13 | React 18 / TypeScript ...
... with stakeholders and apply a problem-solving mindset to deliver robust software solutions Требования - 5 Years of experience - Strong proficiency in C# and the .NET ecosystem, including .NET 6 and later versions - Solid experience with Microsoft SQL Server - Good understanding of https://jobeax.com/link/GrYTXLZMpxEMJknV MVC ...
... wnioskami systemowymi. Bezpieczeństwo i regulacje (UOFP, NIS2/KSC) są częścią Twojego designu od początku, nie kontrolą po fakcie. Stack produkcyjny Backend: .NET Core / https://jobeax.com/link/GrYTXLZMpxEMJknV Core + EF Core, MediatR lub równoważny pattern command/query, MS SQL Server z umiejętnością czytania planów wykonania ...
.NET Developer (Regular) Financial Technology Sector | Hybrid Work (Łódź, Poland) Work Model: Hybrid (On-site 2 times a month in Łódź) Role Overview & Responsibilities We are seeking a skilled Regular .NET Developer to join our team and build high-quality IT solutions for the financial sector. In this role, you will be ...
Talanto is seeking a Senior Full Stack Engineer (https://jobeax.com/link/JSd7UYCSg572jJDY / React) in Kraków, Poland, to develop and maintain C# / .NET desktop applications for manufacturing and testing systems. You will build GUI features with WPF/MVVM, integrate Python scripts, and ensure thread-safe, scalable code. We ...
... leverage Docker, Kubernetes, and modern web technologies (TypeScript, React), as well as open standards such as OData, OAuth, OpenTelemetry We are seeking a Senior Full Stack Developer to advance the AI enablement of our Product Lifecycle Management (PLM) application. In this role, you will design and deliver AI Platform ...
We're looking for an experienced Senior .NET Engineer with Cloud expertise to become part of a dynamic development team working on a project for one of our key clients. Your role will involve designing, building, and maintaining secure, scalable, and robust web applications and services through .NET and the cloud, along ...
IT Performance poszukuje doświadczonego .NET Developera (Mid/Senior) do zespołu zajmującego się systemami Security, Video-CCTV i Data Processing. Praca w środowisku on-premise, z planowaną migracją do .NET 10, z możliwością obsługi starszych komponentów .NET Framework. Zakres obejmuje rozwój i utrzymanie backendu C#/.NET, ...