Senior Software Engineer (Elixir)

• Join a product team as a Senior Software Engineer, helping build the next generation of workforce management. • Work in a non-traditional engineering role where engineers are deeply embedded in product development, working directly with customers to turn pain points into shipped solutions. • Direct, correct, and architect rather than type every line — coding agents produce the majority of Sona's code, and tools like Claude Code or Cursor are a core part of the daily workflow. • Work within a cross-functional product team with significant autonomy, defining features and scope from PR FAQs and kick-off conversations rather than picking up fully specified tickets. • Rotate across product domains through the year — scheduling, payroll, HR, staff engagement — for breadth most engineering roles don't offer.

• Be a senior engineer comfortable owning features from scoping to production, not just executing against a spec. • Bring professional Elixir experience, enough to evaluate and correct agent-produced code in a production codebase. • Have AI development tooling already embedded in how you work, able to articulate your workflows and demonstrate them under pressure. • Care about understanding customer problems as much as solving technical ones, and be comfortable in front of customers directly. • Communicate clearly and concisely, adapting for technical and non-technical audiences alike. • Stay pragmatic, letting go of a strongly held opinion when the situation calls for it and making trade-offs consciously.

• Bring full-stack experience including React Native. • Have a background at a product-led engineering team or high-growth B2B SaaS company. • Bring familiarity with HR or workforce management domains. • Have hands-on experience shipping mobile app features.

• Own features end-to-end across Sona's platform, from scoping through to delivery, including in the mobile app. • Use AI development tooling as your primary workflow, directing and evaluating agent-produced code rather than writing everything from scratch. • Work directly with customers through workshops, feedback sessions, and discovery conversations to ensure what you build solves real problems. • Collaborate closely with Product Managers and Product Designers to shape solutions from vague requirements and kick-off outputs. • Contribute to multiple product domains across the year, building deep understanding of workforce management challenges. • Participate in the product development process, challenging scope, suggesting approaches, and making pragmatic trade-offs between the ideal solution and the right one for now.

Sona is one of the most exciting B2B SaaS companies in the UK right now. The company has raised over $100 million from world-class investors and has grown revenue by 400% in 2023 alone. Two of the three founders, Oli Johnson and Ben Dixon, previously spent six years building Catapult, a gig platform for hospitality and retail, while Steffen Wulff Petersen came from Rocket Internet, where he helped launch Lazada, HelloFresh and Payleven. That domain expertise is a genuine differentiator: Sona is not a generic scheduling tool bolted onto HR. It is built from the ground up for complex, multi-site enterprises with hundreds or thousands of frontline staff. What stands out on Glassdoor (4.6/5 from 26 reviews, 88% recommend, 94% positive business outlook) is how consistently employees praise the team culture, the benefits and the pace of growth. The compensation sub-score is a remarkable 4.9/5. Sona offers genuinely strong benefits for a startup: Bupa health insurance, 25 days holiday plus 10 flexible public holidays (with an extra day per year of service), enhanced parental leave (26 weeks full pay for primary parents, 8 weeks for secondary), share options, pension matching up to 5%, twice-yearly team retreats and a quarterly £200 learning budget. The main things to be aware of: this is a fast-paced startup where priorities shift quickly; some reviews mention long hours and pressure around headcount management; and the team is still relatively small, at around 150 people. But with a fresh $45 million Series B led by N47, US expansion underway, and the recent launch of Forge, an enterprise AI application builder that lets customers create custom software on top of Sona's platform, the company is at a genuinely exciting inflexion point.

• Earn a base salary of £85,000–£105,000 with share options. • Work remote-first within a European timezone, with quarterly in-person alignment sessions and client workshops in London. • Take 35 days' annual leave (25 days standard plus 10 flexible public holiday days), with an extra day for every year of service. • Get pension contributions matched up to 5% and comprehensive health insurance. • Benefit from enhanced parental leave and pay, plus a salary sacrifice childcare scheme (workplace nursery). • Claim a co-working space stipend if based outside London. • Join annual, all-expenses-paid team retreats. • Receive the latest MacBook, a home-office equipment budget, and a professional development budget. • Enjoy unlimited free books.

Sona is an AI-native platform for frontline workforce management, built for the largest frontline organisations. Its end-to-end system covers Scheduling, HR, Payroll, and Communications, giving organisations everything they need to staff more intelligently and empower their teams. In under five years, Sona has made a deep impact on the lives of over 100,000 frontline workers, grown the team to 140+, and secured over $100M in funding from notable VCs, including a Series B led by N47 alongside Felicis, Northzone, and Gradient Ventures (Google).