{"id":741412,"url":"https://alion.io/job/interointegrityservices-senior-software-developer-c-net-data-analysis","title":"Senior software developer (C# / .NET, Data Analysis)","company":{"id":679190,"name":"Intero Integrity Services","domain":"interointegrityservices.com","url":"https://alion.io/company/interointegrityservices","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Recruitee","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Tricht, Netherlands"],"countries":["NL"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":5328,"max":6715,"currency":"EUR","period":"month","gross":null,"usd_annual":90504},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C#","optional":false},{"name":"ASP.NET Core","optional":true},{"name":"Azure","optional":true},{"name":"CI/CD","optional":true},{"name":"Human-in-the-Loop","optional":true},{"name":"Machine Learning","optional":true},{"name":"Rest API","optional":true},{"name":"WPF","optional":true}],"status":"live","first_seen_at":"2026-08-03T14:15:45Z","employer_posted_date":"2026-08-03","last_verified_at":"2026-10-31T01:12:54Z","board_verified":true,"closed_at":null,"days_open":88,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":88},"description":"Senior software developer (C# / .NET, Data Analysis)\nBuild the software that turns ultrasonic inspection data into safety-critical pipeline decisions worldwide, and lift the team around you.\nLocation: Utrecht region (head office in Tricht, Gelderland)\nAbout Intero Integrity\nIntero Integrity is an internationally operating specialist in the inspection, maintenance and emission monitoring of pipelines and industrial assets. We develop our inspection technology entirely in-house: from ultrasonic measurement systems and FPGA signal processing to the software our analysts use to interpret hundreds of kilometres of pipeline data.\nThe inspection results our software produces are used for safety-critical decisions about the integrity of pipelines and industrial installations such as heat exchangers. Reliability and correctness are therefore not a nice-to-have, but an absolute requirement.\nWe operate across Europe, North America and the Middle East. Our software products sit at the heart of that work: they are used every day by our data analysis organisation around the world. Whatever you build here has a direct, global impact.\nThe opportunity\nThis is a role for a senior engineer who enjoys both sides of the craft: building excellent software, and helping people around you get better. You will work hands-on on the C#/.NET software behind our data analysis, turning large volumes of ultrasonic inspection data into reliable insights that our organisation uses worldwide.\nWhat makes it attractive is the mix. You mentor and guide our internal developers, setting an example in how we design, review and test. At the same time you work side by side with our external development partners. Learning from them, challenging them and making sure the work meets a high bar. You'll grow as an engineer and as a mentor, often in the same week.\nBecause our data is used for safety-critical decisions, a strong sense of software quality runs through the role: it shapes how you design, how you review and where you set the standard for the team. If you value knowledge transfer and a healthy engineering culture as much as writing good code, you will feel at home here.\n\nWhat you will do\nHands-on software development\nYou design, build and maintain C# applications for the analysis and reporting of inspection data\nYou work with large volumes of ultrasonic signal data and binary data streams\nYou build web applications and REST APIs on the ASP.NET platform\nYou contribute to bringing machine learning / Human-in-the-Loop capabilities into the data analysis workflow\nYou work with cloud-native services, preferably on Azure\nYou contribute to test strategies at functional, integration and system level, with an eye for the safety-critical use of the software\nYou work closely with hardware engineers, test engineers and domain specialists (UT inspection)\nMentorship & working with partners\nYou mentor and coach our internal developers and help them grow their technical skills\nYou lead by example in code reviews, pairing and knowledge sharing\nYou work side by side with external development partners, challenging their choices and making sure the work meets a high standard\nYou help establish and document engineering standards: coding guidelines, review processes, testing strategies and release policy\nYou make sure design decisions and domain knowledge are documented and transferable, so the team can operate independently\nYou help shape a development culture where quality and continuous improvement are the norm\n\nWhat you bring\nTechnical expertise\nExtensive experience with C# and the .NET platform\nSolid knowledge of software architecture, design principles and design patterns\nExperience building web applications and REST APIs (ASP.NET)\nExperience writing maintainable, testable, high-quality software\nExperience with automated testing and CI/CD\nThe ability to mentor others and lift the level of a team\nGood communication skills and the ability to clearly substantiate technical choices\n\nA plus\nExperience with cloud development, preferably Azure\nExperience with machine learning and/or image recognition, and operationalising ML in production\nAffinity with signal processing, measurement data and data streams, preferably in an industrial or technical context\nExperience with WPF and complex desktop applications\nExperience in a domain where software quality and reliability have direct impact (industrial automation, medical software, measurement & inspection or similar)\nWhen do we see you as a senior?\nFor us, seniority goes beyond years of experience or technical skill. We are looking for someone who understands that technical choices affect the product, the organisation and our customers, and who actively takes responsibility for that.\nYou:\nForm an independent view on architecture and technology\nThink critically about requirements, assumptions and existing ways of working\nTake responsibility for quality, also outside your own code, and recognise that in a safety-critical domain the bar is higher\nConsciously build team knowledge: you document, explain and help colleagues grow\nAre comfortable in an environment where not everything is fixed yet, and know how to bring structure to it\nActively contribute to knowledge sharing and continuous improvement within the team\n\nWhat we offer\nA senior role with real influence on our software products and how we build them, the chance to mentor and grow a team, and the variety of working alongside experienced external partners, in a domain where technology genuinely matters.\nSalary & terms of employment\nGross monthly salary between € 5.328,- and € 6.715,- based on a 40-hour week, depending on knowledge and experience\nYear-end bonus, dependent on company results\n25 holiday days per year\nHybrid working (3 days per week at the office in Tricht as standard) and flexible working hours\nCollective pension scheme, with Intero contributing 50% of the premium\nLaptop and phone provided\n\nWorking environment\nTechnically challenging problems at the intersection of software, hardware and data\nCollaboration with experienced specialists across a range of technical disciplines\nFree fruit at work, access to the Intero Gym, company fitness options and a bike leasing scheme\nAn international, technically driven working environment with plenty of room for ownership and initiative\n\nReady to build with us?\nDo you want to write excellent software, help a team grow around you and work alongside strong external partners? Then we would like to meet you.\nSend your application and CV or LinkedIn profile to .\nQuestions about this vacancy? Get in touch with our Corporate Recruiter Veroniek Smits at the same address.\nPlease note that for this role we do not work with recruitment agencies, and we're unable to accept unsolicited candidate submissions or related fees.","description_format":"text","description_chars":6870,"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":[]},"benefits":["Flexible schedule","Hybrid work"],"hiring_locations":[{"name":"Netherlands","iso":"NL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Engineering Services","Testing, Inspection & Certification"],"lifecycle":[{"event":"open","at":"2026-09-11T12:44:24Z"}],"visa":[{"country":"NL","licensed_sponsor":true,"evidence":"Recognised sponsor of the Dutch immigration service (IND)","filings_12m":null,"filings_prev_12m":null,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"Highly skilled migrants and regular labour","cap_exempt":false,"checked_at":"2026-10-19T06:52:34+00:00","sources":["IND: public register of recognised sponsors (work)"],"filings_for_role_12m":0}],"liveness":{"score":17,"band":"cold","label":"Long shot","p_open":1,"p_active":0.6,"p_room":0.28,"age_days":87,"expected_fill_days":35,"reasons":["conf:4","win:tail","crowd:"],"computed_at":"2026-10-30T05:48:23Z"},"pay":{"stated_usd_annual":90504,"is_top_pay":false},"html_url":"https://alion.io/job/interointegrityservices-senior-software-developer-c-net-data-analysis","json_url":"https://alion.io/job/interointegrityservices-senior-software-developer-c-net-data-analysis.json","meta":{"generated_at":"2026-10-31T04:50:19Z","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 call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":6746,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-01T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":679190},"rest":"https://alion.io/mcp/rest/get_company?id=679190"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Finterointegrityservices-senior-software-developer-c-net-data-analysis"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Finterointegrityservices-senior-software-developer-c-net-data-analysis"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Finterointegrityservices-senior-software-developer-c-net-data-analysis"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/interointegrityservices-senior-software-developer-c-net-data-analysis\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Finterointegrityservices-senior-software-developer-c-net-data-analysis"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":741412}},{"tool":"search_jobs","arguments":{"company":"interointegrityservices.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":741412},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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