Senior Software Engineer (Elixir)

• Join product teams to build the next generation of workforce management, deeply embedded in the product development process and working directly with customers to understand pain points. • Use AI tooling as central to how you work, with coding agents producing the majority of code while you direct, correct, and architect. • Work within a cross-functional product team with significant autonomy, rotating across product domains including scheduling, payroll, HR, and staff engagement throughout the year.

• Be a senior engineer comfortable owning features from scoping to production rather than just executing against a spec. • Have 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 being in front of customers directly. • Communicate clearly and concisely, adapting for technical and non-technical audiences alike. • Be pragmatic, able to let go of a strongly held opinion when the situation calls for it and make tradeoffs consciously.

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

• 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 tradeoffs 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.

• Work remotely from European time zones with quarterly in-person sessions and client workshops in London. • Receive share options. • Receive 35 days annual leave including 25 days standard plus 10 flexible public holiday days. • Receive an extra day of leave for every year of service. • Receive pension contributions matched up to 5%. • Receive comprehensive health insurance. • Receive enhanced parental leave and pay. • Access salary sacrifice childcare scheme through Workplace Nursery. • Receive a co-working space stipend for those based outside London. • Attend annual all-expenses-paid team retreats. • Receive the latest MacBook and equipment budget for your home office. • Receive a professional development budget and unlimited free books.

Sona is the next generation of AI-native, frontline workforce management. The company has built an end-to-end platform covering Scheduling, HR, Payroll, and Communications that gives the largest frontline organisations everything they need to staff more intelligently and empower their teams. In under 5 years, Sona has made a deep impact on over 100k frontline workers, grown the team to 140+, and secured over $100M in funding from notable VCs including N47, Felicis, Northzone, and Gradient Ventures.