{"id":2378334,"url":"https://alion.io/job/caci-senior-full-stack-developer","title":"Senior Full Stack Developer","company":{"id":1760862,"name":"CACI","domain":"caci.co.uk","url":"https://alion.io/company/caci-co-uk","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Dayforce","truth_index":{"grade":"B","score":75,"open_postings":9,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-13T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"on_site","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":90000,"max_usd":174000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":112},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":true},{"name":"Azure","optional":true},{"name":"Docker","optional":true},{"name":"JavaScript","optional":true},{"name":"React Native","optional":true},{"name":"React.js","optional":true}],"status":"live","first_seen_at":"2026-09-09T00:00:00Z","employer_posted_date":"2026-10-12","last_verified_at":"2026-10-13T12:37:06Z","board_verified":true,"closed_at":null,"days_open":34,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":34},"description":"Job Role: Senior Full Stack Developer\nJob Type: Permanent\nBase Office: London\nWorking Structure: Hybrid\nAbout Us \nWe are a growing digital team working with a wide range of clients to build, scale and maintain robust, high-quality web applications.\nOur culture is collaborative, innovative and focused on delivering solutions that make a real impact. We work together to solve complex technical challenges, continuously improve how we work and build software that we can be proud of.\nWe are looking for a Senior Full Stack Developer to join our team and play a key role in designing, delivering and maintaining modern, scalable and maintainable web applications for a range of clients.\nWhat You’ll Be Doing\nIn this role, you will:\nTake a leading role in the design, development and delivery of high-quality web applications for a range of clients. \nWork closely with developers, testers, designers, project managers and client stakeholders to deliver robust and effective technical solutions. \nProvide technical leadership within project teams, helping to make sound technical decisions and ensuring solutions are scalable, secure and maintainable. \nWrite clean, well-structured and maintainable code, setting a strong example for development best practices and coding standards. \nContribute to application architecture and technical design, working with the wider team to make appropriate technology and implementation decisions. \nLead and contribute to code reviews, helping to maintain quality and supporting the development of other team members. \nMentor and support less experienced developers, helping them develop their technical skills, confidence and problem-solving abilities. \nAdvocate for automated testing and work closely with QA and developers to improve and extend automated test coverage. \nInvestigate complex technical issues and take ownership of identifying and delivering effective solutions. \nProvide technical input into project planning, including estimations, identifying risks and dependencies, and breaking down complex work into clear, actionable tasks. \nParticipate in client meetings, clearly communicating technical approaches, progress, risks and potential blockers. \nHelp establish and continuously improve development standards, processes and best practices across the team. \nUse AI-assisted development tools to improve productivity and support activities such as coding, debugging, testing, documentation and technical research. \nHelp establish good practices for the responsible use of AI-assisted development, ensuring AI-generated outputs are understood, reviewed, tested and meet appropriate standards for security, quality and maintainability. \nStay up to date with emerging technologies and approaches, including developments in AI-assisted software engineering, and identify opportunities where they could provide value. \n\nWhat We’re Looking For\nRequired Skills & Experience:\nTake a leading role in the design, development and delivery of high-quality web applications for a range of clients. \nWork closely with developers, testers, designers, project managers and client stakeholders to deliver robust and effective technical solutions. \nProvide technical leadership within project teams, helping to make sound technical decisions and ensuring solutions are scalable, secure and maintainable. \nWrite clean, well-structured and maintainable code, setting a strong example for development best practices and coding standards. \nContribute to application architecture and technical design, working with the wider team to make appropriate technology and implementation decisions. \nLead and contribute to code reviews, helping to maintain quality and supporting the development of other team members. \nMentor and support less experienced developers, helping them develop their technical skills, confidence and problem-solving abilities. \nAdvocate for automated testing and work closely with QA and developers to improve and extend automated test coverage. \nInvestigate complex technical issues and take ownership of identifying and delivering effective solutions. \nProvide technical input into project planning, including estimations, identifying risks and dependencies, and breaking down complex work into clear, actionable tasks. \nParticipate in client meetings, clearly communicating technical approaches, progress, risks and potential blockers. \nHelp establish and continuously improve development standards, processes and best practices across the team. \nUse AI-assisted development tools to improve productivity and support activities such as coding, debugging, testing, documentation and technical research. \nHelp establish good practices for the responsible use of AI-assisted development, ensuring AI-generated outputs are understood, reviewed, tested and meet appropriate standards for security, quality and maintainability. \nStay up to date with emerging technologies and approaches, including developments in AI-assisted software engineering, and identify opportunities where they could provide value. \n\nNice to Have:\nStrong experience with Docker and containerised development environments. \nExperience designing and working with cloud infrastructure on platforms such as AWS, Azure or similar. \nExperience designing and developing RESTful APIs and integrating with third-party services. \nExperience with application performance optimisation, including database optimisation, caching and improving application performance. \nExperience contributing to or defining application architecture and technical standards. \nExperience implementing or improving automated testing strategies. \nExperience evaluating and introducing developer tools, including AI-assisted development tools, into engineering teams. \nExperience with React Native or other mobile application development frameworks.\n\nEqual Opportunities:\n\nCACI is proud to be an equal opportunities employer. Embracing the diversity of our people, we are on a journey to build a truly inclusive work environment where no one is treated less favourably due to ethnic origin, age, sex, gender identity, veteran status, religion or belief, sexual orientation, marital status, and disability or health condition, actively working to prevent discrimination.\n\nAs a Disability Confident employer, we will;\nProvide reasonable adjustments in the recruitment process where requested (contact a member of the recruitment team on 020 7602 6000 to discuss individual requirements further).\nOffer people with health conditions and disabilities, meeting the minimum criteria for a role, an interview.\nOur people are unique and we encourage, and support them, to be confident in contributing to our inclusion journey.","description_format":"text","description_chars":6703,"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":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Design & Creative","Professional Services","Sales & Marketing"],"lifecycle":[{"event":"open","at":"2026-10-12T18:59:13Z"}],"visa":[{"country":"GB","licensed_sponsor":true,"evidence":"Licensed UK visa sponsor (Senior or Specialist Worker, Skilled Worker)","filings_12m":null,"filings_prev_12m":null,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"Global Business Mobility: Senior or Specialist Worker; Skilled Worker","cap_exempt":false,"checked_at":"2026-10-13T06:20:30+00:00","sources":["UK Home Office: register of licensed sponsors (workers)"],"filings_for_role_12m":0}],"liveness":{"score":37,"band":"fade","label":"Fading","p_open":1,"p_active":0.665,"p_room":0.55,"age_days":34,"expected_fill_days":28,"reasons":["conf:0","win:tail"],"computed_at":"2026-10-13T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/caci-senior-full-stack-developer","json_url":"https://alion.io/job/caci-senior-full-stack-developer.json","meta":{"generated_at":"2026-10-13T14:24:35Z","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":22144,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-14T00:00:00Z"}},"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":1760862},"rest":"https://alion.io/mcp/rest/get_company?id=1760862"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcaci-senior-full-stack-developer"},{"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%2Fcaci-senior-full-stack-developer"},{"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%2Fcaci-senior-full-stack-developer"},{"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/caci-senior-full-stack-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcaci-senior-full-stack-developer"}]}