Exlabs

Exlabs is a Polish software and data engineering firm focused on energy and resources companies. The company works with clients building cloud-native platforms, modernizing legacy systems, and solving data integration problems in high-stakes operational environments. CEO Peter Kolka and CTO Mateusz Wilczyński lead a team that positions itself as a plug-in for missing technical expertise—stepping in when projects stall due to skill gaps or capacity constraints. Their work spans data pipelines, cloud infrastructure, and custom software for energy trading, renewable integration, and grid management.

The firm emphasizes production-readiness over proof-of-concept work. They point to concrete outcomes: a 90% reduction in analysis time for CRU Group, automation of 3,000+ UK air quality zones, and optimization of 26+ GWhs of battery storage operations. Their client base skews toward energy sector operators, commodity traders, and infrastructure companies managing complex regulatory and operational requirements.

Services and capabilities

Exlabs organizes its delivery into four core areas. Data & Analytics Engineering includes custom data pipelines, dashboards, and data governance work. They build on Apache Kafka, Apache Spark, dbt, Airflow, Snowflake, and Databricks. Visualization work uses D3.js, Plotly, Charts.js, Grafana, Metabase, and Power BI.

Cloud & Infrastructure focuses on AWS and Azure deployments using Terraform for Infrastructure-as-Code. They handle data warehouse architecture, ETL deployment, and geospatial data work with PostGIS. This group manages hybrid migrations and serverless platforms for distributed environments.

Custom Software Development covers end-to-end application builds from prototyping through production support. They work with React.js, Next.js, Nest.js, TypeScript, Node.js, Python, and Go. Their stack includes PostgreSQL, Redis, Docker, Kubernetes, and GitHub Actions for CI/CD. They describe their scope as ranging from internal operational tools to complex energy trading platforms.

Technical Advisory is positioned for architecture reviews, technology audits, product discovery workshops, and vendor selection support. This is billed as senior-level guidance for strategic decisions.

Notable work

CRU Group partnered with Exlabs on a data platform for managing multi-million pound battery investments. The engagement delivered a 90% reduction in analysis time and focused on turning complex commodity and storage data into actionable intelligence for investment decisions. A director at CRU noted: "The way Exlabs visualised our data is the true magic of the platform. It's a genuine game-changer for us."

The firm also built a platform for EV charger management where the client lacked cloud and data expertise. Another client—a renewable energy operator—received a major GIS and UI overhaul for asset management, including a globe view and performance optimizations.

For a 26 GWhs energy storage company in the trading space, Exlabs designed cloud infrastructure for an Energy Management System. They also worked on open-source grid data projects across Europe, converting raw grid datasets into actionable intelligence for energy market participants.

How they work

Exlabs typically assembles teams of 2–4 people per project: a Technical Lead, a Frontend or Data Engineer, and a Project Manager, with specialists added for complex work. They start within 2–3 weeks of the initial conversation, though urgent cases have launched in one week. Their process includes a technical assessment workshop early on to avoid scope creep.

Delivery follows two-week sprints with weekly check-in calls; communication happens over Slack or email between calls. Each sprint produces working software rather than status reports. For billing, well-defined projects use fixed-price delivery with milestone-based payments. Exploratory work is billed time-and-materials with a monthly budget cap. The firm flags scope changes early and commits to transparency on costs.

Team and credentials

Peter Kolka is listed as CEO. Mateusz Wilczyński serves as CTO and is the point of contact for technical conversations. Team size, certifications (ISO 27001, SOC 2, etc.), and partner status with major cloud vendors are not detailed in the source material. No G2, Clutch, or third-party review ratings are mentioned.