Crystal Intelligence is hiring a Senior Python Engineer (Remote) — the employer-specified location. The overview below is synthesized from the employer posting on crystalintelligence.teamtailor.com: factual requirements and scope are preserved, but prose is rewritten with editorial context. Verify details and apply via the employer link.
Position Summary:
The listing frames the Senior Python Engineer (Remote) at Crystal Intelligence as a hands-on product role. This is a fully remote role, and we welcome applications from anywhere in Europe. As part of our Nexus squad, you will play a critical role in streamlining clients’ operations and smoothing their investigations on the Crystal platform.
More details: crystalintelligence.com
Duties and responsibilities:
- Owning the transaction monitoring part of the Crystal platform;
- Improving stability and observability of the owned services;
- Maintaining code to high-quality standards;
- End-to-end feature design and implementation;
- Coding, debugging, testing and delivering features and improvements in a continuous manner;
- Providing code reviews, assistance and constructive feedback to other team members;
- Performance optimizations (including database queries optimizations);
- Refactoring code as necessary.
Required:
- 8+ years of commercial experience developing Python backend services and APIs for the web;
- Solid software architecture skills;
- Strong knowledge of SQL/NoSQL databases and data architecture, including PostgreSQL;
- Knowledge of testing principles at different levels of the system;
- Experience in developing client-facing solutions;
- Experience with distributed systems;
- Product-oriented mindset;
- Proficiency in English.
Would be a plus:
- Experience with scalability and performance optimizations of large distributed systems.
- Experience with systems operating on large data volumes;
- Experience with the Flask framework;
- Passion for cryptocurrencies and blockchain technologies.
No previous knowledge of Blockchain technology required.
Tech stack:
- Redis, RabbitMQ, PostgreSQL, ClickHouse;
- Kubernetes, AWS + Hetzner;
- Python 3.14, Flask, Granian;
- Datadog, Grafana.
You’ll get:
- AI tool of your choice: Cursor or Claude Code.
Build a standout application
For the Senior Python Engineer (Remote) at Crystal Intelligence, reviewers look for concise evidence over buzzwords. Mirror the language of the posting sparingly, quantify support or delivery outcomes, and show how you handled ambiguity, time-zone collaboration and user empathy. Keep your resume to impact, keep your cover note to one page, and link to artifacts — tickets resolved, docs shipped, dashboards owned — that prove you can operate in a fast-moving Web3 team. Prepare to discuss a time you turned a confusing user report into a clear fix and how you measure quality in support and operations.
Web3 hiring values reliability: on-time follow-through, clear writing, and a track record of improving runbooks and tooling. Treat the application as a work sample. For interviews, be ready to walk through how you prioritize across time zones, handle a difficult user, and decide when to escalate versus resolve directly. Show how you document decisions so the next teammate benefits.
In a distributed Web3 org, trust builds through written clarity. Use the cover note to demonstrate it.