{"id":3525185,"url":"https://alion.io/job/lego-group-senior-software-engineer-cc","title":"Senior Software Engineer (C++/C)","company":{"id":183152,"name":"LEGO Group","domain":"lego.com","url":"https://alion.io/company/lego","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":84,"open_postings":28,"ghost_share":0,"stale_share":0.857,"repost_share":0,"time_to_fill_p50_days":15,"computed_at":"2026-11-02T06:13:15Z"}},"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":["Billund, Denmark","London, United Kingdom"],"countries":["DK","GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":96000,"max_usd":198000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":9},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"GitHub","optional":false},{"name":"Jira","optional":false},{"name":"Godot","optional":true},{"name":"Unity","optional":true}],"status":"live","first_seen_at":"2026-10-28T00:00:00Z","employer_posted_date":"2026-10-28","last_verified_at":"2026-11-02T00:52:36Z","board_verified":true,"closed_at":null,"days_open":5,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":5},"description":"Job Description\nExpert in building game play features and developing engine tech?\nThen get your application ready, we're looking for you!\nPlay Software drives technology enabled play; where LEGO play sets are combined with electronic hardware and software to build a Play experience.\nAs part of the Play Experience team, you will be a central part of the Play Software organization as we drive to bring advanced technology in-house, working across all technical teams, while always focusing on the experience of LEGO fans of all ages.\nResponsibilities\nWe are looking for a Senior Software Engineer with strong expertise in designing and building high-performance core engines and software platforms. You will design and develop software components that enables the teams to create engaging play experiences using physical capabilities such as motion, sound and colour detection. Through robust and reusable software, you will help bring our tech-enabled toys to life.\nYou will take ownership of key engine components, solve complex challenges in the system. Work closely with Lead Engineer and other stakeholders, you will help establish a robust and maintainable foundation for future capabilities.\nDesign, implement, maintain and optimize core engine through software components. \nTake ownership of complex technical challenges, hands-on in implementation, testing and resolving issues across the platform stack. \nOptimise performance, resource utilisation and reliability in constrained systems, identifying bottlenecks and challenges, and implementing effective solutions. \nContribute to technical design discussions, evaluate implementation trade-offs and recommend improvements to the architecture and software components. \nMaintain high engineering standards through code reviews, automated testing, documentation and continues integration practices. \nCollaborate closely with Engineering Leads and System Architects from the Software and Firmware domains to ensure your work is optimized and efficient on physical platforms. \nIdentify opportunities to improve engineering processes, development workflows to enhance team efficiency and software quality \nRequirements\nStrong software engineering experience in developing complex system, core platforms, frameworks or engines. \nDemonstrated ability to analyse complex technical problems, make engineering trade-offs and communicate decisions clearly. \nStrong software development skills, fluent in C++/C. \nExperience with Domain Specific Languages (DSL). \nDemonstrated track record of successfully delivering engineering projects within team, achieving objectives and milestones. \nDemonstrate ability to balance user experience and technical constraints to deliver effective solutions. \nExperience in using task management software like Jira. \nExperience using GitHub for code management. \nNice to have:\nExperience with connected toys, wearables, IoT or other hardware-software products (BLE, NFC/RFID, sensors, low-power devices). \nExperience with game engines (Unity, Unreal, Godot) and building designer-facing tools and data-driven content pipelines. \nAudio programming or interactive sound design experience. \nExperience designing play for children, including playtesting with kids and working within child safety and privacy regulations. \nA passion for LEGO play and a curiosity for inventing new forms of play. \nApplications are reviewed on an ongoing basis. However, please note we do amend or withdraw our jobs and reserve the right to do so at any time, including prior to any advertised closing date. So, if you're interested in this role we encourage you to apply as soon as possible.\nWhat’s in it for you?\nHere is what you can expect:\nFamily Care Leave - We offer enhanced paid leave options for those important times.\nInsurances - All colleagues are covered by our life and disability insurance which provides protection and peace of mind.\nWellbeing - We want our people to feel well and thrive. We offer resources and benefits to nurture physical and mental wellbeing along with opportunities to build community and inspire creativity.\nColleague Discount - We know you'll love to build, so from day 1 you will qualify for our generous colleague discount.\nBonus - We do our best work to succeed together. When goals are reached and if eligible, you'll be rewarded through our bonus scheme.\nYour workplace: Your workplace will be the office, store or factory specified in this advert.\nHybrid Working: Our hybrid work model, Best of Both offers you the option of flexibility to work from home up to two days per week. Your People Leader will discuss the principles of the model, including how this option applies to your role and team.\nLearn more about our benefits, culture and workplace experience here \nChildren are our role models. Their curiosity, creativity and imagination inspire everything we do. We strive to create a diverse, dynamic and inclusive culture of play at the LEGO Group, where everyone feels safe, valued and they belong.\nThe LEGO Group is highly committed to equal employment opportunity and equal pay and seeks to encourage applicants from all backgrounds (eg. sex, gender identity or expression, race/ethnicity, national origin, sexual orientation, disability, age and religion) to apply for roles in our team.\nThe LEGO Group is fully committed to Children’s Rights and Child Wellbeing across the globe. Candidates offered positions with high engagement with children are required to take part in Child Safeguarding Background Screening, as a condition of the offer.\nThank you for sharing our global commitment to Children’s Rights.\nJust imagine building your dream career.\nThen make it real.\nJoin the LEGO® team today.","description_format":"text","description_chars":5713,"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":["Hybrid work"],"hiring_locations":[{"name":"Denmark","iso":"DK","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-30T13:49:15Z"}],"visa":[],"liveness":{"score":57,"band":"ok","label":"Likely open","p_open":1,"p_active":0.631,"p_room":0.9,"age_days":5,"expected_fill_days":15,"reasons":["conf:5","stale_co","velocity","win:mid","comp:brand"],"computed_at":"2026-11-02T06:13:15Z"},"pay":null,"html_url":"https://alion.io/job/lego-group-senior-software-engineer-cc","json_url":"https://alion.io/job/lego-group-senior-software-engineer-cc.json","meta":{"generated_at":"2026-11-02T06:39:31Z","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":9605,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-03T00:00:00Z"}},"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":183152},"rest":"https://alion.io/mcp/rest/get_company?id=183152"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Flego-group-senior-software-engineer-cc"},{"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%2Flego-group-senior-software-engineer-cc"},{"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%2Flego-group-senior-software-engineer-cc"},{"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/lego-group-senior-software-engineer-cc\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Flego-group-senior-software-engineer-cc"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3525185}},{"tool":"search_jobs","arguments":{"company":"lego.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3525185},"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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