{"id":164766,"url":"https://alion.io/job/relx-senior-software-engineer-i-6","title":"Senior Software Engineer I","company":{"id":3770,"name":"RELX","domain":"relx.com","url":"https://alion.io/company/relx","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":85,"open_postings":131,"ghost_share":0,"stale_share":0.58,"repost_share":0,"time_to_fill_p50_days":39,"computed_at":"2026-10-24T06:02:35Z"}},"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":["Amsterdam, Netherlands"],"countries":["NL"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":65300,"max":108800,"currency":"EUR","period":"year","gross":null,"usd_annual":124957},"salary_estimate":null,"experience_years_min":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Azure","optional":false},{"name":"C#","optional":false},{"name":"Clean Architecture","optional":false},{"name":"Informatica","optional":false}],"status":"live","first_seen_at":"2026-07-13T00:00:00Z","employer_posted_date":"2026-07-13","last_verified_at":"2026-10-22T01:13:28Z","board_verified":false,"closed_at":null,"days_open":103,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":103},"description":"SeniorSoftware Engineer-.NET/AzureTaxPlatform\nAmsterdam | Hybrid Work Model | Full-Time\nBuild software professionals trust when accuracy matters most.\nNextensdevelops the leading tax and compliance platform for professionals in the Netherlands. Trusted by thousands of experts, our softwaresupports more than 1 million filings each year andhelps organizationsnavigateevolving tax rules,high-volume data, and complexworkflows with precision and reliability.\nBuilt on deep domainexpertiseand a commitment to continuous innovation,Nextensnot only ensures compliance,weset the standard for how taxprofessionalswork.\nYour Role\nAs aSeniorSoftware Engineer atNextens, youown meaningfulparts ofa business-critical platform used daily by thousands of professionals.You designanddeliver robust software,make soundtechnical choices, and helpraise the quality of aplatformwhere accuracy, reliability, andmaintainability truly matter.\nYou enjoycomplex engineeringchallenges andbring the judgement to balancequality, delivery,andlong-term maintainability.Together with domain experts, fellow engineers, and product owners, youtranslate changing fiscal requirements intosoftwareour customers can trust completely.\nYou will join Team Fiscal, a product engineering team responsible for key parts of our Dutch tax filing platform. Together with fiscal experts and product colleagues, the team translates changing legislation into reliable software for tax professionals across the Netherlands.\nKey responsibilities include:\nDesign, build,andevolvecore modules for tax filing and compliance,taking ownership from solution design through long-term maintainability.\n\nUse modern engineering practices, including AI-assisted development tools whereappropriate, to improve productivity, quality, and maintainability.\n\nDevelopand improveback-end and front-end components,APIs, interfaces,andintegrationsfora scalable,stable platformwith large data volumes and complex tax logic.\n\nContribute to new features and innovations, such as integrations with external systems and tools for tax advisory workflows.\n\nWork closely with domain experts and product owners to translate regulations and customer needs into reliable software solutions.\n\nImprove engineeringqualitythrough testing, refactoring,code reviews,andmentoring other engineers.\n\nWhatYouBring\nAbachelor’s degree in Computer Science, Software Engineering, or equivalent experience.\n\n4+ years of hands-on software development experience, with evidence of increasing technical ownership, preferably with C#, .NET, Azure, and modern web technologies.\n\nA strong quality mindset, including testing, refactoring, code reviews,clean architecture principles, and coaching others to raise engineering standards.\n\nInterest in using AI-assisted development tools responsibly as part of everyday engineering work.\n\nStrong analytical and problem-solving skills, especially when working with complex logic or data.\n\nA collaborative mindset - you enjoy working closely withengineers and domain expertstocreatepractical,high-qualitysolutions.\n\nA focus on clean, maintainable code and a habit of writing tests to ensure quality.\n\nFluency in English isrequired. You can read and understand Dutchrequirementstexts; spoken Dutch is helpful but not essential.\n\nWhy Join Us\nAtNextens, your work powers the backbone ofprofessionalDutch tax processing and helps thousands of professionals work smarter, faster, and more confidently. Our customers trust us not only for accuracy and compliance, but also because we innovate and improve how they work.\nWhat makes this role unique:\nTechnical challenges → scalable systems, evolving regulations, and high-volume data processing.\n\nReal impact → your solutions directly support over 1 million filings every year.\n\nOwnership →takeresponsibility forimportantplatformareasandhelp guidetechnical choices.\n\nTechnical leadership → mentor colleagues and help raise engineering quality across the team.\n\nWhatwe offeryou:\nHybrid flexibility → combine working from home with collaboration at our modern Amsterdam office.\n\nWork-life balance → flexible hours, generous vacation days, and up to20 daysof remote work abroad per year.\n\nCompetitive package → a strong salary, attractive benefits, and professional development opportunities.\n\nGreat environment → a collaborative workplace, fully equipped in-house gym, and regular team-building activities.\n\nReady to Build What Matters?\nIfyou'reeager totake ownership ofcomplex engineeringchallenges and helpshape how tax professionals work,we’dlike to hear from you. Build software whereprecision matters and yourexpertiseleadsthe way.\n*******\nSeniorSoftware Engineer-.NET/AzureTaxPlatform\nAmsterdam | Hybride werkmodel | Fulltime\nBouw software waar correctheid geen bijzaak is.\nNextens ontwikkelt het toonaangevende platform voor fiscale software en compliance in Nederland. Duizenden belastingadviseurs en financiële professionals vertrouwen dagelijks op onze oplossingen om te voldoen aan wet- en regelgeving, efficiënter te werken en zorgeloos aangifte te doen.\nOnze softwareondersteuntjaarlijksmeer dan1miljoen aangiftes enhelptorganisatiesomgaan met grote hoeveelheden data, complexeworkflowsen steeds veranderende fiscale regels. Dankzij onze diepe domeinkennis en voortdurende innovatie zijn wijeen betrouwbare partnervoorprofessionalsdie hun werk nauwkeurig, efficiënt en met vertrouwen willen doen.\nJouw rol\nAlsSeniorSoftware EngineerbijNextensneemjeverantwoordelijkheid voorbetekenisvolleonderdelen van eenbedrijfskritischplatform dat dagelijks door duizenden professionals wordt gebruikt.Je ontwerpt en bouwt robuuste software, maakt doordachte technische keuzes en helpt de kwaliteit te verhogen van een platform waar nauwkeurigheid, betrouwbaarheid enonderhoudbaarheidecht tellen.\nJe krijgt energie vancomplexetechnische uitdagingen enweetkwaliteit, voortgangenonderhoudbaarheidgoed in balans te brengen.Samen met domeinexperts, andere engineers enproductownersvertaal je veranderende fiscale eisen naarsoftware waar onze klanten blind op kunnen vertrouwen.\nJe komt terecht in TeamFiscal, een product engineering team dat verantwoordelijk is voor belangrijke onderdelen van ons Nederlandse belastingaangifteplatform. Samen met fiscale experts en productcollega’s vertaalt het team veranderende wet- en regelgeving naar betrouwbare software voor belastingprofessionals in heel Nederland.\nJe werkzaamheden:\nOntwerpen, bouwen en doorontwikkelen vancoremodules voor belastingaangifte en compliance,met eigenaarschap vanoplossingontwerptot langdurigeonderhoudbaarheid.\n\nModerne engineeringpraktijken toepassen, waaronder AI-ondersteunde ontwikkeltools waar passend, om productiviteit, kwaliteit enonderhoudbaarheidte verbeteren.\n\nOntwikkelenen verbeterenvanback-enden front-end componenten,API’s, interfacesenintegratiesvoor een schaalbaar en stabiel platformmetgrote datavolumes en complexe belastinglogica.\n\nMeewerken aan nieuwe features en innovaties, zoalskoppelingen metexterne-pakketten, of integratie van tools voor fiscale advisering.\n\nSamenwerken met domeinexperts en productownersom regels en klantwensen te vertalen naar betrouwbare software.\n\nEngineeringkwaliteit verbeteren viatesten,refactoring, code reviews encoachingvanandere engineers.\n\nWat jij meebrengt\nEen afgeronde hbo- of wo-opleiding in informatica, software engineering of vergelijkbaar.\n\n4+ jaar ervaring in softwareontwikkeling, met aantoonbare groei in technisch eigenaarschap, bij voorkeur met C#, .NET,Azureen modernewebtechnologieën.\n\nEen sterkekwaliteitsmindset, met aandacht voor testen,refactoring, code reviews,cleanarchitecture-principesen coaching van anderen.\n\nKennis van modernewebtechnologieën, zoalsAngular,Reactof vergelijkbareframeworks.\n\nInteresse om AI-ondersteunde ontwikkeltools verantwoord in te zetten als onderdeel van dagelijks engineeringwerk.\n\nEen gestructureerde, analytische manier van denken.\n\nEen samenwerkende instelling: je zoekt actief de samenwerking op om tot praktische, elegante oplossingen te komen.\n\nJe beheerst Engels goed en kunt Nederlandstaligetekstenlezen en begrijpen; Nederlands spreken is mooi meegenomen, maar geen vereiste.\n\nWaaromNextens\nBijNextenswerk je aan software die echt het verschil maakt. Onze klanten vertrouwen op ons voor nauwkeurigheid en verwachten dat wij blijven innoveren. Hier bouw je nietalleen mee aan het huidige platform, maar ook aan de manier waarop professionals in de toekomst werken.\nWat deze rol bijzonder maakt:\nTechnische uitdaging → complexe algoritmes, hoge datavolumes en veranderende fiscale regels.\n\nZichtbare impact → jouw oplossingen ondersteunen jaarlijksmeer dan 1miljoen aangiftes.\n\nEigenaarschap →je neemt verantwoordelijkheid voorbelangrijke platformonderdelenenhelpttechnische keuzesrichting te geven.\n\nTechnisch leiderschap → je coacht collega’s en helpt de engineeringkwaliteit binnen het team te verhogen.\n\nWat wij jou bieden:\nHybride werken → combineer thuiswerken met samenwerken op ons moderne kantoor in Amsterdam.\n\nGoede werk-privébalans → flexibele werktijden, ruim aantal vakantiedagen en de mogelijkheid om20 dagen per jaar vanuit het buitenland te werken.\n\nSterk arbeidsvoorwaardenpakket → competitief salaris, aantrekkelijke secundaire voorwaarden en ruimte voor professionele ontwikkeling.\n\nFijne werkomgeving → collegiale sfeer, volledig uitgeruste in-house gym en regelmatige teamactiviteiten.\n\nKlaar om te bouwen aan wat ertoe doet?\nWil jijeigenaarschap nemen overcomplexe technische uitdagingen én invloed hebben op hoe belastingprofessionals hun werk doen?\nSluit je dan aan bijNextensen bouw mee aan oplossingen waar precisie telt en jouw expertise het verschil maakt.\n\nPrimary Location Base Pay Range: NLD Amsterdam (Radarweg) €65,300 - €108,800. \n\nWe know your well-being and happiness are key to a long and successful career. We are delighted to offer country specific benefits. Clickhereto access benefits specific to your location.\nWe are committed to providing a fair and accessible hiring process. If you have a disability or other need that requires accommodation or adjustment, please let us know by completing our Applicant Request Support Form or please contact 1-855-833-5120.\nCriminals may pose as recruiters asking for money or personal information. We never request money or banking details from job applicants. Learn more about spotting and avoiding scamshere.\nPlease read our Candidate Privacy Policy.\nWe are an equal opportunity employer: qualified applicants are considered for and treated during employment without regard to race, color, creed, religion, sex, national origin, citizenship status, disability status, protected veteran status, age, marital status, sexual orientation, gender identity, genetic information, or any other characteristic protected by law.\nUSA Job Seekers:\nEEO Know Your Rights.","description_format":"text","description_chars":10807,"description_truncated":false,"requirements":{"experience_years_min":4,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[{"language":"Dutch","level":"All levels","optional":false},{"language":"English","level":"Advanced (C1)","optional":false}]},"benefits":["Generous vacation","Hybrid work","Professional development"],"hiring_locations":[{"name":"Netherlands","iso":"NL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Publishing","Exhibitions","Legal Software","Financial Data & Market Intelligence"],"lifecycle":[{"event":"open","at":"2026-07-13T00:00:00Z"}],"visa":[],"liveness":{"score":11,"band":"cold","label":"Long shot","p_open":0.9,"p_active":0.438,"p_room":0.28,"age_days":103,"expected_fill_days":39,"reasons":["conf:52","stale_co","wave","velocity","win:tail","crowd:brand"],"computed_at":"2026-10-24T06:02:35Z"},"pay":{"stated_usd_annual":124957,"is_top_pay":false},"html_url":"https://alion.io/job/relx-senior-software-engineer-i-6","json_url":"https://alion.io/job/relx-senior-software-engineer-i-6.json","meta":{"generated_at":"2026-10-24T15:57:47Z","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":23002,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-25T00:00:00Z"}},"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":3770},"rest":"https://alion.io/mcp/rest/get_company?id=3770"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Frelx-senior-software-engineer-i-6"},{"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%2Frelx-senior-software-engineer-i-6"},{"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%2Frelx-senior-software-engineer-i-6"},{"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/relx-senior-software-engineer-i-6\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Frelx-senior-software-engineer-i-6"}]}