Senior Software Engineer (C#/.NET)

SimCorp; Województwo mazowieckie; Hybrid; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Hybrid workplace model

IP sprints (3 weeks each quarter)

Flexible work hours

Job summary

SimCorp is seeking a Senior Developer to join a self-organized Scrum team. You will design, implement, and maintain features across front-end and back-end systems (SOA), and drive the technical delivery to ensure high quality, performance, and scalability.

You will lead automation efforts, perform exploratory testing, and contribute to architecture decisions. You will mentor peers, participate in code reviews, and help improve CI/CD and tooling.

Qualifications

• Bachelor’s or Master’s degree in computer science, engineering, mathematics, or a related field.
• 5+ years of professional experience with C# and .NET and Angular.
• Strong automation and QA best practices; testing approaches including TDD.
• Experience with cloud and on-prem infrastructures; Azure experience preferred.
• Solid understanding of software architecture, design patterns, and domain-driven design.
• Proficient English communication, written and spoken.

Responsibilities

• Design, implement, and maintain new features across front-end and back-end (SOA).
• Lead the technical delivery of features with focus on quality, scalability, and performance.
• Drive automation-first approach with E2E, API, and integration tests.
• Perform manual exploratory testing for complex scenarios.
• Define test strategies at feature/module level.
• Collaborate with Product Owners, Tech Leads, and teammates during analysis and development.
• Contribute to architectural discussions and technology decisions; mentor junior engineers.
• Improve CI/CD pipelines and development tools; promote XP, TDD, and clean code.
• Participate in Sprint Reviews and demos; drive continuous improvement.

Skills

C# / .NET

Angular

Test automation

Mentoring

Agile / Scrum

CI/CD

Education

Bachelor's or Master's in Computer Science/Engineering/Mathematics

Tools

Azure DevOps

Git

TeamCity

SQL

Job description

WHAT MAKES US, USJoin some of the most innovative thinkers in FinTech as we lead the evolution of financial technology. If you are an innovative, curious, collaborative person who embraces challenges and wants to grow, learn and pursue outcomes with our prestigious financial clients, say Hello to SimCorp!At its foundation, SimCorp is guided by our values — caring, customer success-driven, collaborative, curious, and courageous. Our people-centered organization focuses on skills development, relationship building, and client success. We take pride in cultivating an environment where all team members can grow, feel heard, valued, and empowered.If you like what we’re saying, keep reading!WHY THIS ROLE IS IMPORTANT TO USAt SimCorp, we build products that power investment management and financial institutions worldwide. We support some of the largest financial institutions in the world to improve their investments, accounting, and operations by simplifying them.Investment Operations is a product area within SimCorp’s Product Division, which delivers functionality enabling the operations users to be highly efficient. It also offers full STP and automation capability for the workflows and processes seamlessly across the product areas and the financial institutions workflows.As part of our Investment Operations Product Area, you will contribute to the development of enterprise products within this product area. You will collaborate with colleagues from Ukraine, Poland, Denmark and Germany, while gaining deep expertise in applied finance and modern software engineering practices.WHAT YOU WILL BE RESPONSIBLE FORAs a Senior Developer in a self-organized Scrum team, you will:Design, implement, and maintain new features across both front-end and back-end (SOA).Lead the technical delivery of features, ensuring high quality, scalability, and performance.Drive automation-first approach: design, implement, and maintain E2E, API, Integration tests.Perform manual exploratory testing for complex scenarios.Define test strategies at feature/module level.Collaborate closely with Product Owners, Technical Leads, and teammates during analysis, refinement, and development.Contribute to architectural discussions and participate in technical decision-makingMentor and support less experienced engineers through pair programming, code reviews, and knowledge sharingDrive improvements in automation, CI/CD pipelines, and development tools.Ensure adherence to engineering best practices (XP, TDD, clean code).Engage in Sprint Reviews/Demos and continuous process improvementsWHAT WE VALUEWe are looking for an experienced engineer with well-developed technical and collaborative skillsBachelor’s or master’s degree in computer science, Engineering, Mathematics, or a related field.5+ years of professional experience with C# (.NET or .NET Framework) and Angular.Extensive experience in designing and developing enterprise applications. in.NET / C# and working knowledge of Angular.Demonstrated expertise in automation frameworks and CI/CDSolid understanding of manual testing techniques and QA best practices.Comprehensive understanding of Cloud and On-Prem infrastructuresDeep knowledge of CI/CD processes and tools (Git, TeamCity, Azure DevOps).Extensive experience with Microsoft Azure and building/managing pipelinesReadiness to learn APL, developing new features and debugging existing functionality, with full support from our team throughout the learning process.Solid understanding of software architecture and design patterns with experience in Domain-Driven DesignFamiliarity with XP practices (TDD, pair programming, CI).Experience with relational databases (SQL).Proficient English communication skills (Upper-Intermediate or higher), written and spokenAbility to mentor, guide, and inspire other developers.NICE TO HAVEExperience with Azure or similar cloud platforms.Background in FinTech or capital markets.Knowledge and experience in the financial domain, fintech, derivatives (options, futures, swaps, etc.) is an advantage.BENEFITSAny employment contract should include a solid pay package, bonus opportunity, and pension benefits. However, at SimCorp, we believe we can offer more. Therefore, in addition to the traditional benefit scheme, we provide an excellent work & life balance: flexible work hours, a hybrid workplace model. In addition, we offer IP sprints, giving you three weeks each quarter to develop your skills and help drive company growth. There is never just only one route - we practice an individual approach to professional development to support the direction you want to take.NEXT STEPSPlease send us your application in English via our career site as soon as possible, we process incoming applications continually. Please note that only applications sent through our system will be processed. At SimCorp, we recognize that bias can unintentionally occur in the recruitment process. To uphold fairness and equal opportunities for all applicants, we kindly ask you to exclude personal data such as photo, age, or any non-professional information from your application. Thank you for aiding us in our endeavor to mitigate biases in our recruitment process.WHO WE ARE?For over 50 years, we have worked closely with investment and asset managers to become the world’s leading provider of integrated investment management solutions. We are 3,000+ colleagues with a broad range of nationalities, education, professional experiences, ages, and backgrounds.SimCorp is an independent subsidiary of the Deutsche Börse Group. Following the recent merger with Axioma, we leverage the combined strength of our brands to provide an industry-leading, full, front-to-back offering for our clients.SimCorp is an equal opportunity employer and welcome applicants from all backgrounds, without regard to race, gender, age, disability, or any other protected status under applicable law. We are committed to building a culture where diverse perspectives and expertise are integrated into our everyday work. We believe in the continual growth and development of our employees, so that we can provide best-in-class solutions to our clients.