Senior Software Engineer (Integrations)

Senior Integrations Engineer 🔗

**Various integration styles

Build the frameworks

Scale to thousands of feeds**

At CO3, we are standing up a new team to take technical ownership of a live logistics platform integrated into our ecosystem. The platform lives and dies by integrations: connecting a hyper-fragmented market of heavy fleets, logistics providers, and telematics systems into one unified, real-time data stream.

We’re looking for a Senior Integrations Engineer who doesn't just wire up one more API — but deeply understands existing integration flows, maintains system stability, and builds the scalable frameworks to unify and modernize our entire integration pipeline.

🚀 Why this role?

• Real Platform Evolution: Take ownership of a live production platform—understanding its current integration layer, maintaining production reliability, and modernizing the stack into CO3’s core architecture.
• Genuine Ownership: Integrations, cloud infrastructure, engineering standards, and the unification strategy are yours to participate in and execute.
• Scale & Ecosystem Variety: Hundreds of active integrations across the logistics ecosystem, handling high throughput and complex data feeds.
• Build Frameworks, Not Just Plugs: Build and extend the internal abstractions, tooling, and developer frameworks that make every future integration faster, safer, and easier to maintain.

🎯 Your mission

• Deconstruct & Maintain: Deeply analyze existing integration pipelines and telematics feeds, keeping them stable, reliable, and performant in production.
• Tackle Multiple Integrations: Work across diverse integration styles (REST, streaming/Kafka, webhooks, batch, message queues, vendor protocols) and keep high data quality.
• Build Tooling & Frameworks: Design reusable frameworks and internal developer tooling so the team can scale to thousands of feeds without increasing operational overhead.
• Design for Scale & Resilience: Build for high throughput, back-pressure handling, retries, and data integrity across distributed data streams.
• Modernize & Unify: Step-by-step refactor and transition legacy integration flows into CO3's unified, event-driven platform architecture.
• Work AI-Native: Utilize modern AI tooling to rapidly navigate existing integration codebases, streamline refactoring, and raise development velocity.

🎁 What's in it for you

• High-Impact Leverage: Build and maintain the core frameworks, abstractions, and developer tooling that power multiple data feeds, ETL pipelines, and data integrations across Europe.
• Modern & AI-Native Stack: Work with Kafka, AWS/GCP, event-driven architecture, and Java/Spring—backed by a fully AI-integrated daily workflow.
• Solve Real Data Scale: Tackle heavy data volumes, batch processing, and various integration patterns.
• True Product Ownership: One long-term evolving logistics platform, no body-leasing or software house setup, and a candid, "

No-BS" engineering culture.

• Flexibility: Remote-first across Poland with an optional Wrocław office setup (Powstańców Śląskich).