{"id":141489,"url":"https://alion.io/job/iris-software-group-principal-engineer","title":"Principal Engineer","company":{"id":51452,"name":"IRIS Software Group","domain":"iris.co.uk","url":"https://alion.io/company/iris-software-group","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":100,"open_postings":4,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":27,"computed_at":"2026-10-16T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":["GB"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":73000,"max_usd":143000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":46},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Azure","optional":false},{"name":"C#","optional":false},{"name":"CI/CD","optional":false},{"name":"SQL","optional":false},{"name":"Agile","optional":true},{"name":"AWS","optional":true},{"name":"GCP","optional":true}],"status":"live","first_seen_at":"2026-08-05T08:23:02Z","employer_posted_date":"2026-08-05","last_verified_at":"2026-10-16T05:32:52Z","board_verified":true,"closed_at":null,"days_open":72,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":72},"description":"About IRIS\nIRIS Software Group is one of the UK's largest privately held software companies, trusted by 100,000+ businesses, schools and accountancy firms to keep their operations running. Our software pays 1 in 6 UK employees, supports over 12,000 schools, and is relied on by 91 of the top 100 UK accountancy firms.\nWe're a Great Place to Work® certified employer, recognised for our commitment to well-being, inclusion and development - and we're growing fast.\nAs a Principal Engineer, you will be a senior technical leader responsible for shaping the architecture, engineering standards, and technical direction of our products. This is a highly hands-on role where you will lead from the front, working closely with engineering teams to deliver new features, integrations, platform enhancements, technical debt reduction initiatives, and high-quality customer outcomes.\nYou will collaborate with Product, Architecture, DevOps, Support, and other stakeholders across the business to ensure solutions are scalable, secure, and maintainable. Alongside driving technical excellence, you will mentor engineers, champion modern software development practices, and help teams continuously improve how they build and deliver software.\nWorking across a range of technologies and product domains, you will play a key role in modernising legacy platforms, solving complex technical challenges, and building cloud-native solutions that support our growing customer base.\nKey Responsibilities\nTechnical Leadership & Delivery\nProvide hands-on technical leadership across software development teams.\n\nLead the design, development, and delivery of scalable, secure, and high-performing software solutions.\n\nDrive architectural decisions and ensure alignment with engineering best practices and business objectives.\n\nContribute to estimation, planning, and technical decision-making for new initiatives and product enhancements.\n\nWork closely with cross-functional teams to support successful product releases and operational excellence.\n\nEnsure teams understand priorities, milestones, and delivery commitments.\n\nEngineering Excellence\nRemain actively involved in software development, code reviews, troubleshooting, and resolving complex technical issues.\n\nChampion modern engineering practices, including CI/CD, DevOps, automation, testing, and observability.\n\nPromote high standards of code quality, maintainability, security, and performance.\n\nDrive continuous improvement initiatives across development processes, tooling, and ways of working.\n\nSupport the evolution and modernisation of existing platforms and systems.\n\nPeople Leadership & Mentoring\nCoach, mentor, and develop engineers at all levels, creating a culture of learning and technical excellence.\n\nProvide line management support where applicable, including performance management, career development, and objective setting.\n\nFoster collaboration, knowledge sharing, and effective communication across teams.\n\nHelp build high-performing engineering teams by promoting engagement, accountability, and continuous growth.\n\nWhat You'll Bring\nEssential Skills & Experience\nSignificant experience in software engineering, including leadership of complex technical initiatives and distributed teams.\n\nStrong expertise within the Microsoft technology ecosystem, including C#, .NET, SQL Server, Azure, and related technologies.\n\nExperience designing and delivering scalable, cloud-native applications and services.\n\nStrong understanding of microservices, distributed systems, and modern software architecture principles.\n\nAbility to write, review, and guide the development of high-quality, well-tested, production-grade code.\n\nExperience working across multiple programming languages and technology stacks, demonstrating adaptability and a broad technical perspective.\n\nDeep understanding of software engineering best practices, development lifecycles, and agile delivery methodologies.\n\nExcellent problem-solving, communication, and stakeholder management skills.\n\nDesirable\nCloud platform certifications (Azure, AWS, or GCP).\n\nExperience with observability, monitoring, and performance optimisation practices.\n\nExperience modernising legacy applications and driving large-scale technical transformations.\n\nKey Competencies\nTechnical Leadership & Architecture\n\nSoftware Engineering Excellence\n\nCoaching & Mentorship\n\nCollaboration & Stakeholder Management\n\nOwnership & Accountability\n\nStrategic Decision Making\n\nProblem Solving & Innovation\n\nContinuous Improvement Mindset\n\nWhy You’ll Love Working Here\nImpact: Your work will influence millions globally.\n\nGrowth: Continuous learning and career development opportunities.\n\nBelonging: A culture that celebrates diversity and empowers every individual.\n\nReady to Apply?\nClick Apply - we’re excited to learn about your unique perspective and experience. If you need adjustments during the process, let us know. We’re committed to making this opportunity accessible to everyone.\nWhat to expect from our hiring process\nOur process is designed to be fair, transparent and straightforward. Stages vary depending on the role - more senior positions may involve additional steps, and some areas include role-specific assessments such as a technical test or case study - but typically you can expect:\nApplication review - we assess your experience and potential\n\nInitial call - a short conversation to learn about you and share more about the role\n\nSkills assessment - tailored to the position, e.g. case study, coding challenge or portfolio review\n\nFinal interview - meet the team and explore how you'll make an IMPACT at IRIS\n\nWe'll always walk you through the specific stages at the start of the process so you can prepare with confidence.\nIf you need any adjustments or accommodations during the process, let us know, we’re committed to making this experience accessible for everyone.","description_format":"text","description_chars":5878,"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":["Continuous learning"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["EdTech Platforms","Payroll Services","HR & Payroll Software","Accounting & Tax Software"],"lifecycle":[{"event":"open","at":"2026-08-05T08:23:02Z"}],"visa":[],"liveness":{"score":16,"band":"cold","label":"Long shot","p_open":1,"p_active":0.566,"p_room":0.28,"age_days":71,"expected_fill_days":27,"reasons":["conf:0","win:tail","crowd:"],"computed_at":"2026-10-16T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/iris-software-group-principal-engineer","json_url":"https://alion.io/job/iris-software-group-principal-engineer.json","meta":{"generated_at":"2026-10-16T10:18:58Z","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":8649,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-17T00:00:00Z"}},"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":51452},"rest":"https://alion.io/mcp/rest/get_company?id=51452"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Firis-software-group-principal-engineer"},{"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%2Firis-software-group-principal-engineer"},{"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%2Firis-software-group-principal-engineer"},{"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/iris-software-group-principal-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Firis-software-group-principal-engineer"}]}