Senior Software Engineer (PHP/Symfony)

Help us modernise, scale and improve mature digital platforms - the kind that are business-critical and genuinely interesting to work on. Hybrid with Remote Working (UK) | £50,000 - £65,000 | Full-time True9 is an eleven-year-old, independent technology consultancy based in Saltaire, West Yorkshire. We're looking for a Senior Software Engineer (PHP/Symfony) who enjoys working on established, business-critical systems - and taking the time to improve them properly. Much of our work involves long-lived platforms that have delivered value for years. The challenge comes from improving structure, reducing risk and enabling teams to move faster with confidence. If you enjoy untangling complex systems, improving legacy codebases without burning them down, and leaving software in a better state than you found it, you'll feel at home here. What you’ll be doing: Writing clean, maintainable and well-tested PHP (primarily Symfony and Laravel)Working hands-on with legacy codebases: refactoring, improving boundaries and raising qualityOwning areas of the platform and improving them incrementallyContributing to architectural decisions and refactoring strategiesImproving developer experience through better tooling, tests and workflowsCollaborating closely with delivery and QA throughout the lifecycle We believe great software comes from people who are supported, trusted and given room to grow. In this role, you’ll: Have time and space to improve the codebase, not just add featuresBe encouraged to take ownership and influence technical directionLearn through real-world problems, not artificial exercisesShare knowledge and mentor others (and be mentored yourself) How we work: A supportive, low-ego environment where people are trusted to do the right thingPragmatic, delivery-focused engineeringClear communication and collaboration across engineering, delivery and QA Our Saltaire Office Our office is based in Salts Mill, Saltaire - a historic, light-filled space that's become a natural hub for collaboration, focus and shared problem-solving. We value the energy and connection that come from spending time together, while recognising that remote working remains useful for focused work and flexibility. This is an important role within the business, working closely with some of our largest clients. We're looking for someone who values spending time with the wider team and can join us in our Saltaire office a couple of days a week. This role is a great fit if you: Have strong experience with PHP, OOP and modern frameworksAre comfortable working with large or legacy systemsCare about quality, testing and long-term maintainabilityPrefer autonomy, trust and thoughtful decision-makingEnjoy working with people who value clarity over ego What we offer: Competitive salary (£50,000 - £65,000) with annual performance-based reviewsHybrid role, office-based with remote working flexibility34 days off, including Bank Holidays, plus your birthday off every yearHome office setup - we'll provide the right equipment to get you startedA £500 annual personal development budget for learning that matters to youA genuinely supportive, down-to-earth teamOn-site parking and direct train and bus routes2x offsite whole-team activity days per year 6x in-office whole-team days, held every other month 6x virtual whole-team catch-up events, held every other month A vibrant and innovative work culture where your ideas genuinely matter Want to know more about how we work? You can explore the full role details, our culture and how we support your professional growth on our website: 👉 https://www.true9.co.uk/culture-and-careers/senior-software-engineer-php/