Senior Python Backend Developer / Tech Lead
- Role
- Backend
- Experience
- Senior
Open to Anywhere in Ukraine & Europe & EU. Set where you work from to check your eligibility.
No BS summary
Старший бэкенд-разработчик на Python / Tech Lead с 4+ годами коммерческого опыта. Требуется экспертиза в FastAPI, gRPC, асинхронном программировании (asyncio) и построении высоконагруженных распределенных систем на AWS. Обязателен опыт работы с SQL-базами данных и микросервисными паттернами. Знание английского (B2) и украинского (родной) языков.
Core skills
Required skills
Optional skills
Required languages
Dataforest All job openings Senior Python Backend Developer / Tech Lead [1008] Ukraine/ Europe 3-5 years of experience Full-time, Remote work English - Upper-Intermediate (B2) Ukrainian - Native We are looking for a visionary and hands-on Senior Backend Developer / Tech Lead to drive the technical evolution of our high-performance microservices ecosystem at Dataforest. If you are passionate about building scalable, high-load systems, defining architectural patterns, and guiding a talented engineering team in a healthy, flexible working environment — we want you on board! Technical Requirements:
- 4+ years of commercial experience in backend development using Python;
- Proven track record of designing and scaling high-load (Highload) applications and distributed systems;
- Deep expertise in FastAPI (advanced async patterns, dependency injection, architecture optimization, Pydantic v2);
- Extensive hands-on experience with gRPC ;
- Strong mastery of asynchronous programming in Python (asyncio , advanced concurrency models);
- Production experience with AWS infrastructure ;
- Advanced knowledge of SQL databases , mastering query optimization, indexing strategies, and database sharding/replication (e.g., PostgreSQL + SQLAlchemy/Tortoise);
- Deep understanding of microservices patterns (Event-Driven Architecture, CQRS, Saga pattern, API Gateways, Service Mesh).
Optional skills (as a plus):
- Experience with message brokers and task queues (Kafka , RabbitMQ, Celery) under heavy loads.
- Experience in product & data analytics (Amplitude, Mixpanel, Power BI, Redshift);
- Advanced usage of Redis (caching strategies, pub/sub);
- Experience with third-party integrations (payments, iGaming platforms, Fireblocks, SafeHeron, CRM and similar).
Key Responsibilities:
- Architecture & Leadership: Design, build, and maintain scalable backend architectures using FastAPI; establish best practices, code standards, and technical roadmaps;
- High-Load Optimization: Solve complex scalability challenges, optimize system performance, eliminate bottlenecks, and ensure low-latency data delivery;
- Microservices & Infrastructure: Own the integration and evolution of a highly distributed microservices mesh built on AWS;
- Mentorship & Code Quality: Lead technical discussions, conduct rigorous code reviews, and mentor Middle/Junior developers, fostering a culture of engineering excellence;
- Cross-functional Collaboration: Act as a key technical point of contact, collaborating with Data Science, Data Engineering, and product stakeholders to design robust data-retrieval and processing APIs.We offer:
- Great networking opportunities with international clients, challenging tasks;
- Building interesting projects from scratch using new technologies;
- Personal and professional development opportunities;
- Competitive salary fixed in USD;
- Paid vacation and sick leaves;
- Flexible work schedule;
- Friendly working environment with minimal hierarchy;
- Team building activities, corporate events.
Job opening description Fill in the form 🇺🇸 English
What you'll do
- Design, build, and maintain scalable backend architectures using FastAPI
- Establish best practices, code standards, and technical roadmaps
- Solve complex scalability challenges, optimize system performance, eliminate bottlenecks, and ensure low-latency data delivery
- Own the integration and evolution of a highly distributed microservices mesh built on AWS
- Lead technical discussions, conduct rigorous code reviews, and mentor Middle/Junior developers
- Act as a key technical point of contact, collaborating with Data Science, Data Engineering, and product stakeholders to design robust data-retrieval and processing APIs
- Act as a key technical point of contact, collaborating with Data Science, Data Engineering, and product stakeholders
What they require
- 4+ years of commercial experience in backend development using Python
- Proven track record of designing and scaling high-load (Highload) applications and distributed systems
- Deep expertise in FastAPI (advanced async patterns, dependency injection, architecture optimization, Pydantic v2)
- Extensive hands-on experience with gRPC
- Strong mastery of asynchronous programming in Python (asyncio, advanced concurrency models)
- Production experience with AWS infrastructure
- Advanced knowledge of SQL databases, mastering query optimization, indexing strategies, and database sharding/replication (e.g., PostgreSQL + SQLAlchemy/Tortoise)
- Deep understanding of microservices patterns (Event-Driven Architecture, CQRS, Saga pattern, API Gateways, Service Mesh)
- Proven track record of designing and scaling high-load applications and distributed systems
- Advanced knowledge of SQL databases, mastering query optimization, indexing strategies, and database sharding/replication
Benefits
- Great networking opportunities with international clients
- Building interesting projects from scratch using new technologies
- Personal and professional development opportunities
- Competitive salary fixed in USD
- Paid vacation and sick leaves
- Flexible work schedule
- Friendly working environment with minimal hierarchy
- Team building activities, corporate events
We ensure your growth with: Competitive salary fixed in USD, Flexible working schedule and fully remote work format, Paid vacation days and sick leave days, Personal and professional development opportunities, Participation in building innovative projects from scratch using modern technologies, Team-building activities and corporate events, English classes and educational events.