{"id":1367029,"url":"https://alion.io/job/rullion-senior-flutter-engineer","title":"Senior Flutter Engineer","company":{"id":1795322,"name":"Rullion","domain":"rullion.co.uk","url":"https://alion.io/company/rullion","size_band":null,"is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":"Schema","truth_index":null},"role":"Mobile","role_family":"Mobile","seniority":"senior","employment_type":"contractor","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":79000,"max_usd":162000,"period":"year","method":"role_seniority_country_cell","sample_n":11},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"CI/CD","optional":false},{"name":"Dart","optional":false},{"name":"Flutter","optional":false},{"name":"Git","optional":false},{"name":"Kotlin","optional":false},{"name":"State Management","optional":false},{"name":"Swift","optional":false}],"status":"live","first_seen_at":"2026-09-25T06:52:40Z","employer_posted_date":"2026-09-25","last_verified_at":"2026-09-29T01:25:33Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":3},"description":"Senior Flutter Engineer\nFull-time \nInside IR35 \nHybrid 1 office day\nLondon Farringdon office address: 47-53 Charterhouse St, London, EC1M 6PB\nJoin a dynamic energy provider dedicated to sustainable solutions in the UK. We are seeking an experienced Senior Flutter Engineer to join a fast-paced development team delivering high-quality mobile applications. You will play a key role in designing, developing, and maintaining cross-platform applications using Flutter, while contributing to architecture decisions, code quality, and engineering best practices.\nInitially it will be a six-month contract but there is potential for it to be extended. The role is Hybrid, with one day a week being based in their London. It is a full-time role, 37 hours per week. If this role feels right, send us your CV.\nAccountabilities:\nDesign, develop, and maintain scalable Flutter applications for iOS and Android.\nCollaborate with Product Managers, UX/UI Designers, and Backend Engineers to deliver new features.\nWrite clean, maintainable, and well-tested code.\nLead technical discussions and provide guidance to other developers.\nOptimise application performance, reliability, and security.\nParticipate in code reviews and champion engineering best practices.\nIntegrate RESTful APIs and third-party services.\nSupport CI/CD pipelines and automated testing processes.\nOpportunity to work on innovative mobile products.\nCollaborative and highly skilled engineering team.\n\nKnowledge and Skills:\nExtensive commercial experience developing mobile applications with Flutter and Dart.\nStrong understanding of mobile application architecture and design patterns.\nExperience integrating APIs and working with cloud-based services.\nProven track record of delivering production-ready applications.\nKnowledge of state management solutions.\nExperience with Git, CI/CD pipelines, and automated testing.\nStrong problem-solving and stakeholder engagement skills.\nExperience mentoring developers and leading technical initiatives.\nKnowledge of native Android (Kotlin) or iOS (Swift) development.\nPrevious experience working within Agile delivery teams.\nPlease note:\nShould your application be successful, and you are offered the role, a number of pre-employment checks need to be carried out before your appointment can be confirmed. Any assignment offer with our client will be subject to a satisfactory checking report from the Disclosure Barring Service.\nThis vacancy is being advertised by Rullion Ltd acting as an employment business.\nSince 1978, Rullion has been securing exceptional candidates for a range of clients; from large well-known brands, to SMEs and start-ups. As a family-owned business, Rullion's approach is credible and honest, focused on building long-lasting relationships with both clients and candidates.\nWe celebrate and support diversity and are committed to ensuring equal opportunities for both employees and applicants.\nRullion celebrates and supports diversity and is committed to ensuring equal opportunities for both employees and applicants.","description_format":"text","description_chars":3044,"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":[],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Energy & Utilities"],"lifecycle":[{"event":"open","at":"2026-09-28T02:39:26Z"}],"liveness":{"score":52,"band":"ok","label":"Likely open","p_open":1,"p_active":0.516,"p_room":1,"age_days":2,"expected_fill_days":23,"reasons":["conf:3","agency","win:early"],"computed_at":"2026-09-28T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/rullion-senior-flutter-engineer","json_url":"https://alion.io/job/rullion-senior-flutter-engineer.json","meta":{"generated_at":"2026-09-29T01:29:10Z","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":1110,"day_limit":5000,"remaining_today":3890,"minute_limit":60,"resets_at":"2026-09-30T00:00:00Z"}}}