{"id":24407,"url":"https://alion.io/job/loveholidays-design-system-engineer-12-month-ftc","title":"Senior Software Engineer - Web Infrastructure & Design System","company":{"id":6671,"name":"loveholidays","domain":"loveholidays.com","url":"https://alion.io/company/loveholidays","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":96,"open_postings":7,"ghost_share":0,"stale_share":0.143,"repost_share":0,"time_to_fill_p50_days":51,"computed_at":"2026-10-30T05:48:23Z"}},"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":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":91000,"max_usd":176000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":139},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Preact","optional":false},{"name":"Terraform","optional":false},{"name":"TypeScript","optional":false},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-04-23T13:58:13Z","employer_posted_date":"2026-04-23","last_verified_at":"2026-10-30T21:45:39Z","board_verified":true,"closed_at":null,"days_open":190,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":188},"description":"Why loveholidays?\nWe’re on a mission to open the world to everyone, giving our customers unlimited choice, unmatched ease and unmissable value for their next getaway.\nOur trailblaze together culture is what drives our success, powered by our people and the way they work. Using progressive technology, we drive cutting-edge innovation and improve how our customers discover, book and experience their holidays. You’ll have the opportunity to accelerate your growth through meaningful challenges, new experiences and the freedom to shape your own path. You’ll create impact for our future by taking ownership, contributing to shared goals and helping shape what comes next, all as part of our enhanced international community of talented, collaborative and passionate teams.\nWhy Technology at loveholidays?\nTechnology at loveholidays underpins our vision to become the most loved OTA in Europe. We drive cutting-edge innovation and technical excellence to futureproof the business. Our systems process trillions of daily holiday offers, we deploy over a thousand times a month, serving thousands of requests per second. This is where you can accelerate your growth by solving complex challenges and broadening your skillset.\nJoin us to create impact for our future in an exciting new chapter, owning your success and contributing to shared goals. We actively talk about technology and adhere to our key technology principles that have guided us this far. We are growing and have ambitious plans to expand across Europe, employing the best minds and technology to let us do this.\nThe impact you’ll have:\nYou’ll join our Web Infrastructure team, reporting to the Senior Lead Engineer. The team builds the shared foundations behind loveholidays’ customer experiences, spanning our web and app platforms, design system, edge computing and experimentation.\nYou’ll help shape these foundations by:\nBuilding platforms that enable market-leading web performance and accessibility by default, giving product teams the foundations to deliver fast, inclusive customer experiences.\n\nEvolving our design system to help engineers, designers and AI agents deliver consistent, high-quality experiences.\n\nImproving developer experience and reliability through faster builds, actionable error reporting and tools that make systems easier to develop and operate.\n\nOwning problems from discovery through delivery by working directly with internal customers to identify priorities and validate that solutions meet their needs.\n\nYour skillset:\nStrong frontend engineering and performance skills - you have deep experience with a modern frontend framework (we use Preact), TypeScript and CSS, and can diagnose performance bottlenecks and measure how architectural and implementation changes affect Core Web Vitals and real-world performance.\n\nExperience building shared frontend foundations - you’ve built and maintained robust and reusable design systems and developer tooling - managing governance, compatibility and providing clear documentation and migration paths for adopting teams.\n\nAccessibility engineering - you have experience embedding automated accessibility checks into component tests and CI, preventing regressions, and complementing automation with keyboard and assistive technology testing.\n\nInfrastructure ownership - you have experience operating production infrastructure through infrastructure as code tools, such as Terraform, with attention to safe changes, observability and reliability.\n\nBuilding systems for AI agents - you understand how clear interfaces, reusable capabilities, machine-readable context and automated validation help agents work reliably within defined constraints.\n\nProduct engineering mindset - you’re comfortable with ambiguous problems, can challenge proposed solutions and weigh trade-offs, and use research, adoption metrics and performance data to guide decisions.\n\nThe interview journey:\nTA screening - 30 mins\n\n1st stage interview with the Hiring Manager - 45 mins\n\nTech challenge - you can choose between a live and take home option\n\nFinal stage - consisting of discussions around three key areas\n\nPerks of joining us:\nCompany pension contributions at 5%.\n\nIndividualised training budget for you to learn on the job and level yourself up.\n\nDiscounted holidays for you, your family and friends.\n\n25 days of holidays per annum (plus 8 public holidays) increases by 1 day for every second year of service, up to a maximum 30 days per annum.\n\nAbility to buy and sell annual leave.\n\nCycle to work scheme, season ticket loan and eye care vouchers.\n\nOur commitment to inclusion\nAt loveholidays, we focus on creating an inclusive environment where everyone can contribute, grow and succeed. We value the different perspectives, experiences and ideas each person brings, because they help us work better together, challenge our thinking and make stronger decisions.\nAs we continue to grow and evolve, we want everyone to feel supported and able to do their best work. We’re also committed to making our hiring process accessible, so please let our Talent Acquisition team know if you need any adjustments at any stage.","description_format":"text","description_chars":5140,"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":["Annual leave"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Travel Agencies","Travel Technology"],"lifecycle":[{"event":"open","at":"2026-04-23T13:58:13Z"}],"visa":[],"liveness":{"score":14,"band":"cold","label":"Long shot","p_open":1,"p_active":0.516,"p_room":0.28,"age_days":189,"expected_fill_days":51,"reasons":["conf:1","velocity","win:tail","crowd:"],"computed_at":"2026-10-30T05:48:23Z"},"pay":null,"html_url":"https://alion.io/job/loveholidays-design-system-engineer-12-month-ftc","json_url":"https://alion.io/job/loveholidays-design-system-engineer-12-month-ftc.json","meta":{"generated_at":"2026-10-31T00:57:54Z","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":1448,"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":6671},"rest":"https://alion.io/mcp/rest/get_company?id=6671"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Floveholidays-design-system-engineer-12-month-ftc"},{"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%2Floveholidays-design-system-engineer-12-month-ftc"},{"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%2Floveholidays-design-system-engineer-12-month-ftc"},{"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/loveholidays-design-system-engineer-12-month-ftc\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Floveholidays-design-system-engineer-12-month-ftc"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":24407}},{"tool":"search_jobs","arguments":{"company":"loveholidays.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":24407},"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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