Calyptus
Senior Backend Engineer
Get notified of more jobs like this · No spam, ever
How your CV stacks up
Upload your CV to see how well it fits this job role
?%
About this opportunity
This role is being recruited by Calyptus on behalf of one of our clients.
Calyptus is a specialist recruitment partner helping startups and high-growth technology companies hire across engineering, product and design.
What to expect
- We’ll review your application and, if your experience is a strong match, one of our team will be in touch
- We’ll support you throughout the interview process and keep you updated at each stage
- If this particular role isn’t the right fit, we may consider you for other relevant opportunities with our clients
We are looking for a Senior Backend Engineer
About the role
We are looking for a Senior Backend Engineer with 5-15 years of experience to join our engineering team and build the production infrastructure powering our agentic AI capabilities. You'll be a strong individual contributor who loves shipping real features used by real people, in this case, 300+ leading VC and PE firms discovering insights in private markets. We need someone who is killer in Python, has deep experience building and deploying APIs at scale, and is excited about leveraging AI in their work. This is a rare opportunity to join a small, fast-moving team at an inflection point where your backend expertise will directly shape the next generation of AI-powered investment tools.
Reasons to use Rodeo
Start with a chat, not a search bar
Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.
It searches the market for you
Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
What will you be doing?
- Building and shipping production-grade backend services and APIs using Python and FastAPI that power our AI features
- Developing the infrastructure and orchestration layer for agentic AI capabilities within the product
- Working closely with databases (Postgres, ClickHouse) to enable intelligent data retrieval and AI-driven analysis
- Mentoring teammates and contributing to engineering best practices as the team scales from ~7 to 30+ people
Get help with your application
Your very own career expert that helps elevate your application to the next level.
Tech stack
- Python
- FastAPI
- PostgreSQL
- ClickHouse
- SQL
- LLMs (OpenAI, Anthropic)
- Embeddings / Vector DBs
- AI coding tools (Cursor, Claude)
Genuine opportunities
Every role advertised by Calyptus is a live position we’re actively recruiting for. Some clients prefer to remain confidential during the early stages of the hiring process. When that’s the case, certain company details may be shared later in the process.
Why work with Calyptus?
- Access opportunities with ambitious startups and high-growth technology companies
- Direct support from experienced specialist recruiters
- Honest feedback and clear communication throughout the hiring process
- Long-term career support, not just a single job application
We look forward to hearing from you.
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London
Skills
Location