{"id":718413,"url":"https://alion.io/job/ysoft-principal-sw-developer","title":"Principal SW Engineer","company":{"id":690082,"name":"Y Soft","domain":"ysoft.com","url":"https://alion.io/company/ysoft","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":null},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"lead","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Prague, Czech Republic"],"countries":["CZ"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":38000,"max_usd":98000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":2629},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"AI Agents","optional":false},{"name":"Azure","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"Java","optional":false},{"name":"Scala","optional":false},{"name":"C#","optional":true},{"name":"Python","optional":true}],"status":"live","first_seen_at":"2026-09-01T10:56:52Z","employer_posted_date":"2026-10-19","last_verified_at":"2026-10-28T04:12:04Z","board_verified":true,"closed_at":null,"days_open":56,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":56},"description":"At Y Soft, we’re shaping the next generation of RFID/NFC card readers for printers - redefining them as connected, remotely managed solutions. Our products are truly unique, seamlessly blending hardware and software, and are fully designed, developed, and manufactured in the Czech Republic. \nWe're looking for a Principal Software Developer to own the technical direction of software across our hardware products - someone who thrives on the hardest, most ambiguous problems and can take them all the way from a blank whiteboard to production. \nWhat you´ll do:\nOwn the software architecture and technical direction for a broad product area - not just a single feature or component.\nLead design and delivery of the most complex, high-risk features and system integrations, including problems with no established precedent.\nDefine and evolve the team's engineering standards, coding guidelines, and Definition of Done.\nDrive resolution of the team's hardest technical debt and cross-component quality issues.\nGuide troubleshooting and root-cause analysis on the toughest HW/SW integration issues - hands-on, and by mentoring others through them.\nEvaluate and introduce new technologies, tools, and practices, weighing long-term maintainability against short-term gains.\nMentor senior and mid-level engineers, growing their ability to own complex work independently. \nAbout you:\nExtensive, proven experience designing and delivering complex, distributed software systems, with deep expertise in .NET, Java, or Scala and cloud-native architecture.\nA track record of independently defining technical direction for large, ambiguous problems - not just executing someone else's design.\nDeep debugging and root-cause analysis skills, with the ability to guide others through the hardest production and system-level issues.\nStrong understanding of cloud infrastructure (Azure) and containerization (Docker), including hardware-software integration and validating system behavior at scale and across layers.\nExperience introducing engineering practices - CI/CD, testing, observability, tooling - that measurably improved a team's delivery quality.\nStrong grounding in QA best practices and the full software development lifecycle.\nGenuine interest in AI-assisted and agentic development practices, with curiosity to explore how these tools can reshape engineering workflows.\nFluent Czech and English speaker, willing to come into our Prague office from time to time. \nTech Stack:\nJava\nInterest or skills in Scala\n.NET\nJS, TS\nAtlassian stack\nCloud: Azure\n(nice to have) Python \nReady to dive deep into agentic development\nWe offer:\nA key technical role with real influence over how our hardware products are built.\nThe chance to work on products used by organizations around the world.\nA collaborative, technically curious team that values mentorship and knowledge sharing.\nFlexible working arrangements and a competitive compensation package. \nPerks:\n30 days of vacation + 3 sick days\n12 days for education and self-development (Grow Days) + language education support\nHybrid working environment with a flexible schedule (combination of home and office work)\nAccess to the best AI tools on the market, along with training and learning resources to help you make the most of them\nCross-team collaboration with a great opportunity to learn new things and grow\nReward system for public speaking\nHome office and meal allowances\nDaily refreshments in the office + community breakfasts, free 3D print\nDog-friendly and bike-friendly offices","description_format":"text","description_chars":3524,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"Czech","level":"Advanced (C1)","optional":false},{"language":"English","level":"Advanced (C1)","optional":false}]},"benefits":["Flexible schedule","Home office","Hybrid work"],"hiring_locations":[{"name":"Czech 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