Job Summary: We are looking for a Senior Python Developer to lead the design, development, and evolution of reusable core libraries, standardizing practices and improving productivity. Key Highlights: 1. Development and design of reusable core libraries (SDKs, HTTP/gRPC clients) 2. Implementation of testing, quality tools, and dependency security 3. Building and maintaining CI/CD pipelines and automation ##### **We Are Looking for a Senior Python Developer** **About NxC** At Nonconformist, we are an agency specializing in digital experiences and products. We focus on human-centered design, with a multidisciplinary approach covering the entire value creation process. We combine Design, Data, Growth, and Technology to transform businesses, delivering end\-to\-end solutions that directly impact user experience. **The Challenge** We are seeking a **Senior Python Developer** to drive the design, development, and evolution of reusable base libraries that will be used cross-functionally across the company’s various development teams. This role is critical to standardizing practices, enhancing squad productivity, and ensuring the technical quality of our internal Python ecosystem. #### **️** **Your Day\-to\-Day Responsibilities** **Core Library Development and Design*** Build reusable libraries (SDKs, HTTP/gRPC clients, authentication modules, observability modules, utilities, etc.). * Ensure stable public APIs, semantic versioning (SemVer), and clear documentation. * Publish and manage packages in private repositories via GitHub Packages. **Quality, Testing, and Security*** Implement tests using pytest, property\-based testing (hypothesis), and achieve high coverage. * Use quality tools: ruff/flake8, black, isort, mypy, pre\-commit. * Ensure dependency security (Dependabot, SCA, Bandit). **CI/CD and Automation*** Build and maintain pipelines in GitHub Actions (lint, test, build, publish). * Define release strategies (alpha/beta/GA) and automate tagging and publishing workflows. **Observability and Reliability*** Implement observability standards with OpenTelemetry (traces/metrics/logs). * Structured logging and monitoring best practices. **Collaboration*** Provide expert support to teams consuming the libraries. * Participate in technical ceremonies of squads when the libraries impact their development work. **What We Expect From You** * +6 years of backend development experience with Python. * Strong experience with Python 3\.10\+ (asyncio, advanced typing, Pydantic, context managers). * Packaging and distribution (Poetry, setuptools, wheels). * FastAPI, httpx/requests. * SQLAlchemy, PostgreSQL, Redis. * REST and gRPC integrations. * Familiarity with GitHub Actions & GitHub Packages. * Monitoring/Observability: OpenTelemetry, Prometheus/Grafana. * Excellent communication skills and negotiation ability. * Teamwork, problem\-solving capability, and a collaborative mindset. **Bonus Points** * Degree in Systems/Software Engineering. * Knowledge of Docker containers and Kubernetes deployments. * Proficiency in technical English. **How We Work at Nonconformist** We value people who… * Are autonomous, responsible, flexible, and embrace change. * Promote continuous feedback, active listening, and value diversity. * Collaborate as a team and share knowledge to build better solutions. * Question assumptions, propose ideas, and turn them into action—blending creativity with real impact. **Our Benefits** * OSDE corporate health plan (for you and your family). * One additional week of vacation. * Birthday day off. * In\-house yoga classes. * In\-house English classes. * Home, car, and motorcycle insurance agreement. * Travel insurance agreement. * Opportunity to work with market\-leading clients. * Hybrid work model, with **1 day per week onsite** at the client’s office. **If you think this is a match...** We look forward to receiving your application!