Senior Software Engineer (Elixir)

• Join product teams to help build the next generation of workforce management where AI tooling is central to how engineers work. • Own features end to end across the platform from scoping through to delivery. • Work directly with customers through workshops, feedback sessions, and discovery conversations to ensure what you build solves real problems.

• Be a senior engineer comfortable owning features from scoping to production not 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 and be 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 and able to let go of a strongly held opinion when the situation calls for it making trade-offs consciously.

• Have full-stack experience including React Native. • Have 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 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. • Work directly with customers through workshops, feedback sessions, and discovery conversations. • 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.

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

Sona is building the next generation of AI-native frontline workforce management. The end-to-end platform covers Scheduling, HR, Payroll, and Communications giving the largest frontline organisations everything they need to staff more intelligently and empower their teams. In under 5 years Sona has impacted over 100k frontline workers, grown to 140+ team members, and secured over $100M in funding including a Series B led by N47 alongside Felicis, Northzone, and Gradient Ventures.