{"id":1060640,"url":"https://alion.io/job/cern-online-software-developer-ep-cms-tdq-2026-153-grap","title":"Online Software Developer (EP-CMS-TDQ-2026-153-GRAP)","company":{"id":4055,"name":"CERN","domain":"home.cern","url":"https://alion.io/company/cern","size_band":"501-1000","is_staffing_agency":false,"is_intermediary":false,"listed_via":null,"ats_vendor":"SmartRecruiters","truth_index":null},"role":"Hardware","role_family":"Hardware","seniority":"junior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Geneva, Switzerland"],"countries":["CH"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":6372,"max":7004,"currency":"CHF","period":"month","gross":null,"usd_annual":101556},"salary_estimate":null,"experience_years_min":2,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"CI/CD","optional":false},{"name":"JavaScript","optional":false},{"name":"Python","optional":false},{"name":"TypeScript","optional":false},{"name":"Verilog","optional":false},{"name":"VHDL","optional":false}],"status":"live","first_seen_at":"2026-09-18T12:46:33Z","employer_posted_date":"2026-09-18","last_verified_at":"2026-09-24T22:18:27Z","board_verified":true,"closed_at":null,"days_open":6,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":6},"description":"As a Software Developer, you will contribute to the upgrade of the CMS data acquisition system for the High-Luminosity LHC. You will design and develop software for FPGA-based electronics platforms, enabling the configuration, control and monitoring of the Trigger and Timing Control and Distribution System (TCDS). Working closely with electronics engineers, physicists and other stakeholders, you will contribute to requirements gathering, the production of detailed documentation, and direct participation in the preparation and execution of system tests at progressively larger scales, in view of deploying the production system in 2028.\nYour responsibilities\nIn collaboration with other members of the group and CMS collaborators, develop software to configure, control, and monitor the different components of the TCDS system. This requires close interaction with hardware components.\nContribute to the setup and operation of DAQ test systems to validate the different parts of the design.\nMaintain and improve software repositories and Continuous Integration/Continuous Deployment (CI/CD) infrastructure.\nContribute to the installation and commissioning of the Phase-2 DAQ system between 2027 and 2029.\nProvide support to the CMS community for the commissioning of sub-detector data acquisition components.\nYour profile\nProficiency in designing and developing complex applications in Python and C++, including user-facing and REST-based interfaces.\nExperience with system programming and interaction with computer hardware.\nExperience developing software in collaborative environments and with Continuous Integration and Continuous Deployment (CI/CD) practices. \nFamiliarity with firmware development using hardware description languages such as VHDL or Verilog would be an asset.\nSome exposure to the challenges of data acquisition systems in modern high energy physics (HEP) experiments would be an asset.\nSkills\nProficiency in Python and modern C++.\nProven background in collaborative software development and DevOps practices.\nPractical experience with web UI development using JavaScript, TypeScript, and related modern frameworks.\nAbility to work effectively in a team, present design options, work plans and status reports, and produce clear documentation.\nSpoken and written English, with a commitment to learn French.\nEligibility criteria:\nYou are a national of a CERN Member or Associate Member State.\nYou have a professional background in Software Engineering or Applied Physics (or a related field) and have either:a Master's degree with 2 to 6 years of post-graduation professional experience;\nor a PhD with no more than 3 years of post-graduation professional experience.\n\nYou have never had a CERN fellow or graduate contract before.\n Job closing date: 11.10.2026 at 23:59 CEST.\nContract duration: 24 months, with a possible extension up to 36 months maximum.\nWorking hours: 40 hours per week\nJob flexibility: Hybrid\nTarget start date: 01-January-2027\nThis position involves:\nWork during nights, Sundays and official holidays, when required by the needs of the Organization.\nJob reference: EP-CMS-TDQ-2026-153-GRAP\nField of work: Information Technologies\nBenchmark job: 200020 - Computing Engineer\nGlobal Benefits\nA monthly net stipend of either 6372 or 7004 Swiss Francs per month depending on your degree.\n30 days of paid leave per year plus 2 weeks annual closure.\nCoverage by CERN’s comprehensive health insurance scheme (for yourself, your spouse and children), and membership of the CERN Pension Fund.\nFamily, child and infant monthly allowances depending on your individual circumstances.\nA relocation package (installation grant and travel expenses) depending on your individual circumstances.\nPossibility to extend your contract up to 36 months.\nOn-the-job and formal training including language classes.\nOverview of CERN - Discover a world where the impossible is made possible!\nAt CERN, the European Organization for Nuclear Research, we are pushing the frontiers of science and technology. Our groundbreaking work brings together not only physicists but also a diverse range of professionals from engineering, technical, scientific, and administrative fields. Together, we foster an environment where innovation and collaboration thrive.\nEvery day, we face exciting new challenges and opportunities to contribute to cutting-edge research that shapes our understanding of the universe. We meet these challenges through the diverse perspectives within our teams, ensuring every contribution is valued and driving our shared sense of inclusion and purpose. Diversity is a core value of CERN since its foundation, and it remains central to our mission and continued success.\nIf you are ready to be part of a dynamic, inclusive community pushing the boundaries of knowledge, CERN is the place where your curiosity and skills can thrive. Be part of our mission to uncover what lies at the heart of the universe! TAKE PART!\nMore information about us, here:careers.cern","description_format":"text","description_chars":4995,"description_truncated":false,"requirements":{"experience_years_min":2,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":false},"security_clearance":false,"languages":[{"language":"English","level":"All levels","optional":false}]},"benefits":["Health insurance"],"hiring_locations":[{"name":"Switzerland","iso":"CH","kind":"country"}],"hiring_excludes":[],"relocation_offered":true,"industries":["Science & Engineering"],"lifecycle":[{"event":"open","at":"2026-09-19T07:57:11Z"}],"liveness":{"score":84,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.839,"p_room":1,"age_days":5,"expected_fill_days":22,"reasons":["conf:0","velocity","win:early","comp:junior"],"computed_at":"2026-09-24T05:45:00Z"},"pay":{"stated_usd_annual":101556,"is_top_pay":false},"html_url":"https://alion.io/job/cern-online-software-developer-ep-cms-tdq-2026-153-grap","json_url":"https://alion.io/job/cern-online-software-developer-ep-cms-tdq-2026-153-grap.json","meta":{"generated_at":"2026-09-24T22:30:54Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":730,"day_limit":5000,"remaining_today":4270,"minute_limit":60,"resets_at":"2026-09-25T00:00:00Z"}}}