Backend Developer (Python/Typescript) – Mid level

We’re looking for a mid to mid+ level backend developer to join one of our dedicated teams at Lexis Solutions, working on a large-scale platform for a leading US construction company. You’ll be building and maintaining custom backend systems for data pipelines and large-scale web scrapers used across multiple data domains (Projects, Personnel, Contacts, Opportunities, and more).

Tech stack you’ll work with:

• Python (main)
• Typescript
• PostgreSQL
• Docker
• Kubernetes (optional, nice to have)

Bonus points for:

• Experience with data processing, large datasets, or ETL pipelines
• Familiarity with scalable, distributed systems

What you’ll do:

• Designing and implementing modular ETL jobs using shared base classes across domains
• Building and maintaining backend services for custom data processing,scraping workflows, checkpoint validation, fingerprinting, and deduplication logic
• Writing CI pipelines to trigger builds for specific collectors and datasets.
• Developing and optimizing collector and transformer jobs for event streams
• Work with large datasets and optimize performance at scale
• Collaborate closely with the team and client to design and implement new features
• Ensure clean, maintainable, and well-documented code
• Maintaining high code quality with SonarCloud, strong test coverage, and low technical debt
• Contribute to improving architecture and development best practices

What we’re looking for:

• Solid backend development experience with Python and/or TypeScript 
• Understanding of Docker-based development workflows
• Have experience building data pipelines from ingestion to processing to storage
• Good grasp of relational databases (PostgreSQL in particular)
• Have experience working with cloud storage providers (AWS, Azure, GCP).
• Problem-solving mindset and ability to work independently

Why join us:

• Competitive salary
• Remote-friendly or hybrid in our office in Vitosha, Sofia
• Work on impactful projects for a major US client
• Learn and work across multiple languages and tech stacks
• Flexible environment where results matter more than bureaucracy
• We are a lean, fast-paced team solving meaningful data infrastructure problems

Interview process:

1. Get-to-know online meeting – culture fit and role discussion
2. Take-home task challenge – solve at your own pace
3. Technical discussion call – review your solution and dive deeper into tech topics

If this sounds like your kind of challenge, send us your CV and let’s talk.