Senior FastAPI Engineer Role - Python Backend Career in Columbus
Career & Market Insight
Role Level & Market Position: This is a Senior-level backend engineering role with a strong emphasis on Python performance engineering and cloud-native architecture. Senior FastAPI engineers are in high demand globally, particularly as companies modernize from Django/Flask monoliths to microservices. The stack (FastAPI, PostgreSQL, Redis, Kafka, Kubernetes, AWS) is highly marketable and aligns with 2024–2025 backend hiring trends.
Skills You'll Build:
- Advanced async Python patterns (asyncio, Pydantic v2) — increasingly rare and well-compensated
- Cloud-native distributed systems design on AWS (ECS/EKS)
- AI-adjacent backend skills (vector DBs, LangChain) listed as nice-to-have — a fast-growing niche
- Technical leadership: design reviews, code quality standards, testing benchmarks
Compensation: No salary is disclosed, which is a minor red flag for transparency. Proxify typically places contractors at rates competitive with European freelance markets. For this seniority level, typical market rates range from €60,000–€100,000+ annually in Western Europe, or €4,000–€7,000/month as a contractor.
Culture Signals: Proxify acts as a staffing intermediary, so team culture depends on the end client. The contractor model offers flexibility but less job security than a direct hire. Green flags include strong Glassdoor/Trustpilot ratings and the promise of long-term engagements. The one-time onboarding process to access multiple clients is a genuine time-saver for experienced developers who prefer variety.
Red Flags: Fixed 8-hour days and timezone restrictions are more constraining than typical async remote roles. The end client is not disclosed upfront.
About Us
Talent has no borders. Proxify's mission is to connect top developers around the world with opportunities they deserve. So, it doesn't matter where you are; we are here to help you fast-track your independent career in the right direction. 🙂
Since our launch, Proxify's developers have successfully worked with 1200+ happy clients to build their products and growth features. 5000+ talented developers trust Proxify and its network to fulfill their dreams and objectives.
Proxify is shaped by a global network of supportive, talented developers interested in remote full-time jobs. Our Glassdoor (4.5/5) and Trustpilot (4.8/5) ratings reflect the trust developers place in us and our commitment to our members' success.
The Role
We are looking for a Senior Python Developer specializing in FastAPI on behalf of one of our high-growth clients to architect, build, and scale their core cloud-native backend services. In this role, you will take ownership of developing high-throughput, low-latency asynchronous APIs that power data-intensive platform features. You are a perfect candidate if you are growth-oriented, you love what you do, and you enjoy working on new ideas to develop exciting products.
What We're Looking For
- 3+ years of dedicated, hands-on production experience building high-performance asynchronous web services with FastAPI and modern Python (3.10+). Deep mastery of Python's asyncio ecosystem, dependency injection, and Pydantic v2 data validation.
- 5+ years of total software engineering experience designing, deploying, and maintaining production-grade distributed systems and RESTful APIs.
- Solid proficiency with relational databases (PostgreSQL), writing optimized raw SQL or leveraging ORMs like SQLAlchemy and Alembic for schema migrations and query tuning. Caching layer experience with Redis is essential.
- Practical experience building decoupled services using message queues and event streaming platforms (e.g., RabbitMQ, Celery, or Apache Kafka).
- Strong daily proficiency with Docker, Kubernetes or AWS container services (ECS/EKS), and setting up CI/CD deployment pipelines (GitHub Actions, GitLab CI).
- Strict adherence to software design patterns, clean code principles, and comprehensive automated testing using pytest.
- Located in the CET timezone (+/- 3 hours) — applications from candidates outside this timezone range cannot be considered.
Nice-to-Have
- Experience with GraphQL or WebSocket integrations alongside standard REST protocols.
- Familiarity with vector databases (Pinecone, Milvus, Qdrant) or AI/LLM orchestration frameworks (LangChain, LlamaIndex) for AI-integrated backends.
- Experience migrating legacy Django or Flask monolithic architectures to decoupled FastAPI microservices.
Responsibilities
- Design, build, and document secure, high-concurrency microservices and RESTful endpoints using FastAPI and OpenAPI/Swagger standards.
- Profile asynchronous bottlenecks, manage event loops, optimize database queries, and scale caching layers to maintain sub-millisecond response times under peak load.
- Build robust communication channels between internal services and external partner APIs using webhooks, message brokers, and background workers (e.g., Celery).
- Lead technical design discussions, establish testing benchmarks, and conduct thorough peer code reviews to ensure system reliability and security compliance.
- Collaborate closely with DevOps teams to containerize applications, monitor cloud health metrics, and streamline automated release cycles.
What We Offer
Get paid, not played
No more unreliable clients. Enjoy on-time monthly payments with flexible withdrawal options.
Predictable project hours
Enjoy a harmonious work-life balance with consistent 8-hour working days with clients.
Flex days, so you can recharge
Enjoy up to 24 flex days off per year without losing pay, for full-time positions found through Proxify.
Career-accelerating positions at cutting-edge companies
Discover exclusive long-term remote positions at the world's most exciting companies.
Hand-picked opportunities, just for you
Skip the typical recruitment roadblocks and biases with personally matched positions.
One seamless process, multiple opportunities
A one-time contracting process for endless opportunities, with no extra assessments.
Compensation
Enjoy the same pay, every month with positions landed through Proxify.
Frequently Asked Questions
Is this role fully remote or does it require office attendance?
What timezone do I need to be in to apply?
How does compensation and payment work through Proxify?
What Python experience is required for this role?
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