/ TEAMS · Senior Python Backend Engineering
Hire experienced Python engineers to own API platforms, asynchronous workflows, persistence, integrations and secure production releases—not broad scripting or introductory data-science roles.
2,000+ engineers in our active talent network · Regional recruiters
/ SYSTEM STACK
Python · FastAPI / Django
REST · Validation · Auth
PostgreSQL · ORM · Transactions
asyncio · Celery · Queues
Tracing · Tests · CI/CD
/ AVAILABLE TO HIRE
Profiles show the experience we can source. Individual candidate availability is confirmed after enquiry.
Senior Python Backend Engineer — FastAPI / Django
Available11+ years of experience · Romania
Senior Python Backend Engineer — FastAPI / Django with 11 years in production systems, focused on Senior Python Backend Engineer — FastAPI / Django and Production systems.
Languages: Romanian, English B2+
Senior Python Backend Engineer — FastAPI / Django
Available14+ years of experience · Romania
Senior Python Backend Engineer — FastAPI / Django with 14 years in production systems, focused on Production systems and Technical delivery.
Languages: Romanian, English B2+
Mid+ Senior Python Backend Engineer — FastAPI / Django
Inquire availability5+ years of experience · Czechia
Senior Python Backend Engineer — FastAPI / Django with 5 years in production systems, focused on Technical delivery and Senior Python Backend Engineer — FastAPI / Django.
Languages: Czech, English B2+
Senior Python Backend Engineer — FastAPI / Django
Inquire availability12+ years of experience · Lithuania
Senior Python Backend Engineer — FastAPI / Django with 12 years in production systems, focused on Senior Python Backend Engineer — FastAPI / Django and Production systems.
Languages: Lithuanian, English C1
/ Engineering teams
Onectus builds production software and sources backend engineers for established product teams. For senior Python roles we focus on service ownership, API contracts, concurrency, database performance and operational behavior, and verify framework experience against the candidate's actual shipped systems.
/ Technical specializations
The right engineer understands when to choose synchronous or asynchronous execution, how to preserve database consistency and how to ship Python services reliably.
Service boundaries, dependency design, request validation, Django ORM/DRF and maintainable APIs.
asyncio, event-loop constraints, worker design, cancellation, timeouts and CPU-bound workloads.
SQLAlchemy/Django ORM, indexes, migrations, transactions, locks and query-plan analysis.
Celery or equivalents, retries, idempotency, queues, task observability and safe failure recovery.
OAuth2/OIDC, authentication, rate limiting, typed contracts, partner APIs and audit trails.
pytest, typing, dependency management, containers, OpenTelemetry, profiling and release automation.
/ Project scenarios
Profile async scheduling, worker capacity, timeouts and connection-pool pressure.
Prevent duplicate business events and make Celery failures visible and recoverable.
Improve query behavior, upgrade dependencies and preserve established API contracts.
Design schema changes, streaming interfaces, authorization and production observability.
/ Practical evaluation
We assess framework-specific ownership, concurrency tradeoffs, real incidents, database behavior and architecture decisions in deployed backend systems.
Can they explain FastAPI/Django service boundaries, validation and middleware decisions?
Where did asyncio, worker processes or Celery retries help or create problems?
How were SQL transactions, migrations, query plans, locks and ORM performance managed?
Which tests, monitoring, security changes, incidents and releases were personally owned?
/ Sourcing process
Python version, FastAPI/Django, database, async model, queues, security and SLAs.
Search experienced backend engineers rather than broad Python generalists.
Review shipped APIs, concurrency, data correctness, tests and incidents.
Align seniority, interview process, timezone, onboarding and availability.
Profiles, availability and engagement terms are confirmed for each request.
/ Questions
Yes. State the framework, API contracts and production ownership, as Django ORM and FastAPI/ASGI patterns can require different experience.
Yes. Include I/O profiles, worker model, cancellation, connection pools and throughput requirements.
Yes where the role requires background processing and transactional data; experience in both is checked through concrete examples.
We focus on backend architecture, operational reliability, security, concurrency and production data consistency rather than scripts or notebooks.
/ Onectus · TEAMS
Tell us the technology, production responsibilities, experience level and working model. We'll activate the appropriate engineering sourcing channels.
