{"id":3880712,"url":"https://alion.io/job/simcorp-senior-software-engineer-ocamlc-otc-core","title":"Senior Software Engineer – OCaml/C# – OTC Core","company":{"id":867,"name":"SimCorp","domain":"simcorp.com","url":"https://alion.io/company/simcorp","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"A","score":88,"open_postings":55,"ghost_share":0,"stale_share":0.418,"repost_share":0.073,"time_to_fill_p50_days":59,"computed_at":"2026-11-07T05:47:08Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Copenhagen, Denmark"],"countries":["DK"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"C#","optional":false},{"name":"Claude","optional":false},{"name":"Copilot","optional":false},{"name":"F#","optional":false},{"name":"Haskell","optional":false},{"name":"OCaml","optional":false},{"name":"Scala","optional":false}],"status":"live","first_seen_at":"2026-11-06T17:59:27Z","employer_posted_date":"2026-11-06","last_verified_at":"2026-11-07T16:49:42Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"WHAT MAKES US, US\nJoin 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!\nAt 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.\nIf you like what we’re saying, keep reading!\nABOUT OTC CORE\nIn the OTC Core Product Area, we work on functionality supporting over-the-counter financial instruments in SimCorp’s main product, SimCorp Dimension. Our work brings together financial contract modelling, functional programming, and C#/.NET development.\nMost of our development work centres on financial contract models written in an internally developed domain-specific language embedded in OCaml. These models bring together business logic, database mapping, and user-interface layout in one place. Alongside implementing the models, we evolve the language itself and the supporting C#/.NET framework.\nYou do not need to arrive as an expert in OTC instruments or OCaml. What matters is curiosity about the problems, strong programming foundations, and a willingness to learn.\nWHAT YOU WILL WORK ON\nAs part of a cross-functional team working across locations, you will contribute from the first discussion of a feature through design, implementation, testing, and support.\nYou will:\nImplement financial contract models in our OCaml-based domain-specific language, defining their business logic, database mapping, and user-interface layout.\nEvolve the OCaml-based language and supporting C#/.NET framework, balancing new capabilities with improvements to existing code.\nUse AI-assisted development tools - including Claude, GitHub Copilot, and our internally developed cloud agent - to explore solutions, develop code, and improve tests, applying your engineering judgment to validate the results.\nWork with product management and fellow engineers to understand business needs and turn them into maintainable solutions.\nBuild automated tests and use code reviews to improve correctness, clarity, and maintainability.\nHelp make technical decisions, address technical debt, and share your experience with colleagues.\nWHAT YOU BRING\nWe are primarily looking for a senior engineer who can work through complex problems, contribute to design decisions, and collaborate effectively with others.\nWe value:\nStrong programming and software design skills, with experience in C#/.NET or functional programming.\nThe ability to understand an existing system and make thoughtful, well-tested changes.\nCuriosity about functional programming, financial modelling, and the business problems behind the code.\nA collaborative approach: asking questions, explaining your reasoning, and giving and receiving constructive feedback.\nClear communication in English and a willingness to keep learning.\nExperience with OCaml or other functional languages (Haskell, Scala, F#, or similar), domain-specific languages, Web APIs, or financial software would be useful - but you do not need to bring all of it. A relevant degree or equivalent practical experience can provide a foundation; we are interested in what you can do and how you approach problems.\nBENEFITS\nGlobal hybrid work policy - We ask you to work 2 days a week from the office. If you choose you can work remotely the other days. Of course you are welcome at the office if that is your preference.\nGrowth and innovation - Every 6th sprint is reserved for planning and innovation. So, with regular intervals you have a chance to explore and learn new skills or improve something that you believe will be beneficial to you, your team or the application.\nSelf- Direction - High degree of self-organization. Each team and developer have a high degree of freedom to plan, organize and design their work.\nInclusive and diverse company culture.\nPension and health benefits and bonus.\nWork-life balance - We truly believe that an equilibrium between professional responsibilities makes us all the best version of our self's, both in private life and as a colleague in the workplace.\nEmpowerment - We believe that all voices are valuable and must be heard. You will involved in shaping our work processes.\nNEXT STEPS\nPlease 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 endeavour to mitigate biases in our recruitment process. If you are interested in being a part of SimCorp but are not sure this role is suitable, submit your CV anyway. SimCorp is on an exciting growth journey, and our Talent Acquisition Team is ready to assist you discover the right role for you. The approximate time to consider your CV is three weeks.\nWe are eager to continually improve our talent acquisition process and make everyone’s experience positive and valuable. Therefore, during the process we will ask you to provide your feedback, which is highly appreciated.\nWHO WE ARE?\nFor 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, educations, professional experiences, ages, and backgrounds.\nSimCorp 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.\nSimCorp 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. 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