{"id":2113291,"url":"https://alion.io/job/link-group-senior-c-engineer-4","title":"Senior C# Engineer","company":{"id":3913591,"name":"Link Group","domain":"linkgroup.pl","url":"https://alion.io/company/link-group-2","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"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":["Warsaw, Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":32000,"max":44000,"currency":"PLN","period":"month","gross":null,"usd_annual":135084},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Apache Kafka","optional":false},{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"C#","optional":false},{"name":"Git","optional":false},{"name":"Jenkins","optional":false},{"name":"MS SQL","optional":false},{"name":"Octopus Deploy","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Redis","optional":false},{"name":"Snowflake","optional":false}],"status":"live","first_seen_at":"2026-09-21T09:55:41Z","employer_posted_date":null,"last_verified_at":"2026-09-21T09:55:41Z","board_verified":false,"closed_at":null,"days_open":21,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":21},"description":"We are looking for an experienced C# Engineer to join a technology team responsible for key back-office and trade accounting platforms. The role focuses on building, improving, and supporting reliable systems used in high-volume financial operations.\n\nThis position is a good fit for someone with strong .NET experience, solid understanding of distributed applications, and the ability to work across both strategic development and production support. You will collaborate with international engineering teams and contribute to systems that require stability, scalability, and strong technical ownership.\n\nThe company operates in the financial sector and has a strong AI-oriented culture. Artificial intelligence is used in a practical way to support daily work, automate repetitive tasks, improve efficiency, and speed up delivery. As part of the recruitment process, the candidate’s AI mindset will also be assessed, including openness to using modern AI tools, ability to critically evaluate AI-generated outputs, responsible usage, and readiness to identify areas where AI can improve engineering and delivery processes.\nZakres obowiązków\nDesign, develop, test, and maintain business-critical back-office applications.\nWork on distributed, service-based systems processing large volumes of financial data.\nImprove existing .NET-based platforms with a focus on performance, reliability, and scalability.\nTake ownership of trade accounting-related systems, including development, maintenance, and second-line support.\nMake technical decisions independently while identifying and managing potential risks.\nCooperate with engineering teams across different locations to deliver consistent and robust solutions.\nSupport production stability by investigating issues and implementing long-term improvements.\nContribute to technical design, code quality, testing standards, and deployment practices.\nWymagania\nAt least 5 years of professional software engineering experience in enterprise environments.\nStrong commercial experience with C# and .NET Core.\nGood understanding of object-oriented design and multithreaded programming.\nExperience building service-oriented, connected, or distributed applications.\nKnowledge of event-driven architecture and asynchronous communication patterns.\nExperience with messaging technologies such as Kafka, Solace, or similar tools.\nPractical experience with databases such as MS SQL, PostgreSQL, Snowflake, or comparable systems.\nFamiliarity with cloud platforms, especially AWS or Azure.\nExperience with distributed caching solutions such as Redis.\nUnderstanding of development and deployment tools such as Git, JIRA, Jenkins, or Octopus Deploy.\nAbility to communicate technical topics clearly to different audiences.\nResponsible approach to AI-assisted development, including validation, security awareness, testing, and critical review of generated outputs.\nTech stack\nC#\n.NET\nAWS\nAzure\nSQL\nPostgreSQL\nSnowflake\nRedis\nKafka\nSolace\nGit\nJenkins\nJIRA\nOctopus Deploy\nTest-driven development\nProblem-Solving","description_format":"text","description_chars":3038,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-08T22:25:03Z"}],"visa":[],"liveness":{"score":51,"band":"ok","label":"Likely open","p_open":0.85,"p_active":0.802,"p_room":0.75,"age_days":20,"expected_fill_days":28,"reasons":["seen:20","velocity","win:late"],"computed_at":"2026-10-12T06:55:09Z"},"pay":{"stated_usd_annual":135084,"is_top_pay":false},"html_url":"https://alion.io/job/link-group-senior-c-engineer-4","json_url":"https://alion.io/job/link-group-senior-c-engineer-4.json","meta":{"generated_at":"2026-10-12T16:05:24Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per 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