Senior Software Engineer (Python)

Get to know us betterCodiLime is a software and network engineering industry expert and the first-choice service partner for top global networking hardware providers, software providers and telecoms. We create proofs-of-concept, help our clients build new products, nurture existing ones and provide services in production environments. Our clients include both tech startups and big players in various industries and geographic locations (US, Japan, Israel, Europe). While no longer a startup - we have 250+ people on board and have been operating since 2011 we’ve kept our people-oriented culture. Our values are simple: Act to deliver. Disrupt to grow. Team up to win. The project and the teamYou will join the team behind a leading network source-of-truth (NSoT) platform, used by thousands of organizations - from fast-growing tech companies to Fortune 500 enterprises - to model, document, and automate their network infrastructure. CodiLime engineers work within the platform's Assurance & Integrations area, building and extending the integrations that connect the platform to third-party network systems and controllers - such as Cisco Meraki, VMware vCenter, Juniper Mist, and Infoblox. These integrations run as lightweight discovery agents that securely connect to a customer's infrastructure, continuously identifying devices, interfaces, and the relationships between them. The discovered data is then delivered through the platform's declarative data ingestion API. The platform is built AI-first, with its own Claude Code agent skills and MCP server, and that mindset carries over to how the team works: AI-assisted development is actively cultivated day to day to help the team move fast and consistently land high-quality results. The scale is significant - some of the platform's largest customers manage hundreds of thousands of devices, each with multiple interfaces, across globally distributed environments. As the integration ecosystem keeps expanding to new vendors and use cases, the team is growing, and we're looking for another Senior Software Engineer to help build what's next. Technology stack: Small, cross-functional team of software engineers who share strong ownership of code quality (unit and E2E tests)AI tools are part of the daily workflow, including AI-assisted test writing and internal data/feed management toolingThis is a backend-focused roleStartup-like vibe: proactive, ownership-driven, fast-pacedDistributed team across Europe and USWe work on multiple interesting projects at a time, so it may happen that we’ll invite you to an interview for another project if we see that your competencies and profile are well suited for it. Your roleAs a part of the project team, you will be responsible for: Designing, building, and maintaining integrations that connect the platform to third-party network systems and controllersDeveloping discovery agents/workers that securely connect to customer infrastructure and extract device, interface, and topology dataBuilding and maintaining the services and APIs that deliver discovered data into the platform's declarative ingestion layerWriting and maintaining unit tests (pytest) and contributing to E2E test automation (Playwright, running in Docker Compose via CI)Exploring and applying AI-assisted engineering practices - such as interactive, Claude Code-driven testing flows - to make development and testing faster and more reliableCollaborating closely with a small, cross-functional engineering teamProposing and helping ship your own ideas for improving the platform, beyond your core integration workContributing to architecture and design decisions as the integrations platform scales to new vendors and larger deploymentsWriting clean, maintainable, well-tested code and participating in code reviewsDo we have a match? As a Senior Software Engineer, you must meet the following criteria: Strong professional experience with PythonHands-on, everyday use of AI coding tools (ideally Claude Code) in your engineering workflowExperience building and maintaining integrations or APIs (REST)Experience with gRPC is a strong plusSolid unit testing experience, ideally with pytestFluency and experience with Docker, Docker ComposeExperience with KubernetesWorking understanding of core networking concepts: IP vs MAC, VLANs, VRFs, DNS, BGP, ACLsExperience with relational databases (PostgreSQL/SQL)Comfortable in a startup-like, fast-paced, proactive environmentExperience with monitoring tools (e.g. Grafana and/or Prometheus)CI/CD experience (ideally GitHub Actions)Experience with Cloud computing (Ideally AWS, e.g. EC2, S3, EKS)Good knowledge of English (minimum C1 level)Beyond the criteria above, we would appreciate the following nice-to-haves: Experience with GoExperience with MQTTFamiliarity with FastAPIExperience with Swagger and/or PostmanExperience with Playwright or other E2E testing frameworksExperience with AnsibleMore reasons to join usFlexible working hours and approach to work: fully remotely, in the office or hybridProfessional growth supported by internal training sessions and a training budgetSolid onboarding with a hands-on approach to give you an easy startA great atmosphere among professionals who are passionate about their workThe ability to change the project you work on