Python Team Lead, Integration team

Fliff Inc; Warszawa; On-site; PLN 280,000 - 420,000; Full time

Job summary

Fliff Inc in Warszawa, Poland is seeking a Python Team Lead to guide the Integration team. You will own backend features, design scalable services in Python/Django, and build integrations with external systems such as KYC providers, geolocation and payment partners.

You will work closely with product and engineering teams to scope new integrations, implement observability, write tests, and support production operations in a fast-paced environment.

Qualifications

• 5+ years of development experience with Python and API/integration focus.
• Experience leading a team of at least 3 engineers.
• Strong knowledge of webhooks, callbacks, idempotency and failure handling.
• Experience with observability tools to monitor production integrations.
• Architecture design for highly loaded, scalable systems.
• Understanding of the full SDLC from requirements to deployment.

Responsibilities

• Provide leadership for the integration team.
• Own backend features from design through deployment and production support.
• Design, develop and maintain scalable Python/Django services.
• Build and maintain integrations with external systems (KYC, geolocation, payments).
• Collaborate with product/engineering to scope and deliver new integrations.
• Implement observability: monitoring, logging, and alerting.
• Write unit and integration tests to improve reliability and coverage.
• Support production issues and participate in on-call rotations.

Skills

Team leadership

Python

API integrations

Observability

Testing

On-call rotations

Architecture design

Tools

Python

Django

Postgres

Redis

Kafka

AWS

Datadog

CloudWatch

Grafana

Job description

We’re looking for a Python Team Lead to join our Integration team, which owns a broad set of critical integrations across the product. The team is responsible for integrations with KYC providers, geolocation services, payment methods, and other external systems that are essential to product operation and user experience.

Our Stack

Python, Django, Postgres, Redis, Kafka, AWS

Responsibilities

• Provide leadership for a team
• Take full ownership of backend features and improvements, from design through implementation, deployment, and production support
• Design, develop, and maintain scalable, high-performance backend services using Python and Django
• Build and maintain integrations with external systems, including KYC, geolocation, and payment partners, and other third-party services
• Work closely with product and engineering teams to scope and deliver new integrations
• Implement observability across integration flows, including monitoring, logging, and alerting
• Write unit and integration tests to ensure system reliability, prevent regressions, and improve overall test coverage and testing practices
• Support production issues and participate in on-call rotations

Requirements

• Experience leading and managing a team of at least 3 engineers
• At least 5+ years of development experience, with Python as the primary language and strong experience in API and system integrations
• Proven experience integrating third-party APIs, with deep understanding of webhooks, callbacks, idempotency, and failure handling. Payments and KYC integrations are strong plus
• Experience with observability tools to monitor and troubleshoot production integrations
• Strong fundamentals in algorithms, data structures and concurrency
• Experience in architecture design of highly loaded and scalable solutions
• Strong understanding of the full software development lifecycle, from requirements analysis to deployment and production monitoring

Great to have

• Experience in early-stage startups and fast-paced engineering environments
• Experience in writing automated tests, measuring test coverage, and defining test automation strategies
• Experience with observability tools such as Datadog, CloudWatch, Grafana
• Experience in sports/betting industries

We are a multinational company with our headquarters based in Philadelphia, and offices in New York, Austin, and Sofia, Bulgaria. Wherever we are in the world, we pride ourselves on being a close-knit, focused team that is welcoming and friendly, and the work that we do is always interesting and rewarding. Wherever we are in the world, we pride ourselves on being a close-knit, focused team that is:

Welcoming and Friendly

We want to reflect the diversity of the cities we serve. By creating an inclusive culture where everyone can thrive, we’ll make Fliff better for employees and customers alike.

Lively and Creative

We respect and value each other’s ideas, experience and expertise. There is no such thing as a bad idea; only ideas that are executed and ideas that are discarded after consideration.

Stimulating and Rewarding

We know bright minds love a challenge, and we understand your desire to see your hard work pay off. We’ll make sure your daily tasks align with your career ambitions as we grow together.

Equal Employment Opportunity Statement

Fliff is an equal-opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.