Tech Lead

We're looking for you if

• Languages are tools to you: strong in Java, but comfortable finding your feet in TypeScript/Node and Python, and willing to work in C#.
• You architect for scale: hands-on with AWS and/or GCP, Kafka, and event-driven architecture.
• You are AI-fluent: you already use AI in your daily engineering and have a view on where it helps and where it doesn't.
• You have a product mindset: experience in product companies and/or fast-scaling startups is a big plus.
• You are open-minded: you meet a new domain, stack, or constraint with curiosity, not resistance.
• You are a true one-man-army: you can independently take an initiative from idea to production, and still play well with others.

Bonus points

• Transport & logistics domain knowledge.
• DDD, and experience moving from monolith toward modular / event-driven services.
• An Ops mindset — you treat infrastructure as part of the product.

Tech Lead — One-Man-Army ️

High craftsmanship · Event-driven · AI-native · Product mindset

At CO3, we are standing up a new team to take full technical ownership of a live logistics platform integrated into our ecosystem. We need a Tech Lead who is genuinely a one-man-army: someone who can dive deep into an active codebase, master its complex telematics integrations, keep the platform rock-solid, and lead its modernization and unification into the core CO3 architecture. Languages are tools — you reach for the right one, ship, and move on.

Why this role?

• Real-world Platform Evolution: Take ownership of a live, active production platform. You'll understand an existing ecosystem, stabilize it, and execute a modernizing & unification roadmap under CO3 standards.
• Genuine Ownership: Architecture, cloud infrastructure, integrations, engineering standards, and the unification strategy are yours to participate in and execute.
• Complex Integrations & Heavy Domain Logic: A wide variety of integrations across the logistics ecosystem paired with core modules packed with complex, non-trivial domain logic — no simple CRUD-only busywork.

Your mission

• Deconstruct & Master: Deeply analyze the existing, live platform—understanding its data flows, system behaviour, and the full ecosystem of external logistics integrations.
• Maintain, Modernize & Unify: Keep the active platform rock-solid and operational today while architecting and executing its step-by-step modernization and unification into CO3's core platform.
• Tackle Multiple Integrations & Complex Logic: Take hands-on ownership of a wide variety of logistics ecosystem integrations and core modules packed with heavy, non-trivial domain logic.
• Keep Technical Standards: Define engineering craftsmanship, system patterns, automated testing culture, and architectural standards as the platform evolves.
• Grow & Lead the Team: Mentor Senior and Junior engineers, and build a high-performing, autonomous unit around you.
• Work AI-Native: Leverage modern AI tooling to rapidly navigate existing codebases, streamline refactoring, and multiply team velocity.
• Cloud Infrastructure Ownership: Keep our cloud footprint (AWS/GCP) performant, secure, cost-optimized, and resilient.

What's in it for you

• • Modern Stack & AI-Native Culture: AWS/GCP, Kafka, both batch-based and event-driven data architecture.
  • Real Technical Depth: Tackle non-trivial domain logic and a wide variety of logistics ecosystem integrations.
  • High-Impact Architecture: Direct ownership over modernizing and unifying a live platform into CO3’s core European data network.
  • True Product Ownership: No body-leasing or software house setup—one long-term evolving product with a candid, "No-BS" engineering culture.
  • Flexibility: Remote-first across Poland, with a modern office in Wrocław (Powstańców Śląskich) available whenever you prefer a hybrid setup.

,[] Requirements: Testing, AI, Cloud, AWS, GCP, Security, Java, TypeScript, Node.js, Kafka, Integration, Architecture, Mentorship, Ownership, Logistics, DDD, React, Angular, C# Tools: Confluence, GitHub, GIT, Agile, Kanban. Additionally: Modern office.