Staff Software Engineer

• Looking for builders at heart with experience in Python and some familiarity with LLMs.
• Nice to have: customer experience or previous founder experience, preferably in startups.

Technical Stack

• Mainly Python (FastAPI, Postgres), hosted on GCP with Kubernetes; front end uses TypeScript and Next.js.
• Utilizes OpenAI and Gemini for LLMs, Deepgram for speech-to-text, and 11 Labs for text-to-speech., * Preferably with 5-10 years of experience, ideally in startup environments or with diverse backgrounds.
• Background in finance or customer-facing roles is a plus; flexibility in technical degree requirements.

Pain Points

• Previous recruitment efforts with agencies and AI platforms have not met expectations.
• Struggles with finding candidates who can commit to five days in the office.

Cultural Fit

• Looking for candidates not optimizing for work-life balance; must be comfortable with an office-centric work culture., * 5 - 10 years of experience in full- stack software engineering (backend- leaning) and AI product development

Work experience:

• Building and shipping AI products end- to- end. Meaningful, hands- on experience with agentic systems, not just general ML or data science backgrounds.
• Early- stage startup experience (Series A or earlier)
• Experience with voice AI, event- driven systems, or CRM integrations & having worked with customers.

Hard skills

• Full Stack Proficiency in Python or TypeScript. Must have Strong async Python. Candidates need real hands- on experience with async coroutines, httpx, AsyncOpenAI, and production- grade error handling in async contexts.
• Experience with modern cloud infrastructure (Kubernetes, serverless, distributed systems).

Soft skills

• Can scope and deliver solutions directly with non- technical customers.

Company Context

• Recently closed a $13 million Series A, with YC and Blackbird as investors.
• Operating in a five-day workweek model from the office located in Old Street, London.

Compensation and Logistics:

• Open to visa sponsorship and expects candidates to work five days a week in the office.

Timeline and Urgency

• Aiming to hire as soon as possible, with the expectation of a March start date due to notice periods in the UK.
• Role is a high priority, being the last founding engineer position to fill.

Interview Process

• Four stages: initial chat, technical assessment (with take-home and on-site components), cultural interview, and team meet.
• Emphasizes practical, product-building exercises over traditional coding tests.

• Elios is building AI receptionists for home services, targeting sectors like plumbing and facility management.
• The company is small, with 14 people, including 6 in engineering, 2 in sales, and 6 in customer operations.