Spark Developer

Position: Spark Developer
Location: Hybrid from Kraków, Poland (3 days per week in the office)
Domain: Banking & Finance
Experience Level: 5+ years
Employment Type: B2B
Timezone: GMT+1 (CET)

About the Project

We are looking for an experienced Spark Developer to join a strategic project in the banking and finance sector. The role involves developing and maintaining a platform serving stock exchange clients.
You will be part of a team building the core integration between Dealstores, Operations, and Regulatory systems within the client’s Digital Operations Stream — a key component of their long-term strategy to move toward cloud technologies and enhance system performance.

Key Responsibilities

• Design and develop a strategic data platform that enables seamless trade execution flow between Dealstores, Operations, and Regulatory systems.
• Transform epics and features into reliable, scalable, and high-performing solutions.
• Collaborate within an agile team to iteratively deliver product requirements.
• Partner with the product team to translate business needs into robust technical implementations.

Technical Requirements

• 5+ years of experience in a similar role.
• Fluent English and a Bachelor’s degree in Computer Science (or equivalent certification).
• Strong software engineering background with hands-on expertise in Spark and PySpark (mandatory).
• Proven experience in real-time and batch data pipelines using Kafka.
• Databricks and Delta Tables experience is a significant plus.
• Solid understanding of DevOps and CI/CD practices (GitLab, Azure DevOps, GitHub).
• Proficiency in Test-Driven Development (TDD) and clean software design principles.
• Knowledge of cloud architecture, preferably Azure (AWS or GCP is a plus).
• Java backend development experience is a strong advantage.
• Familiarity with Kubernetes and modern data infrastructure technologies is beneficial.

Required Technical Stack

• Spark / PySpark
• Kafka
• Databricks
• DevOps, CI/CD (GitLab, ADO, GitHub)
• TDD (Test-Driven Development)
• Microsoft Azure

Nice to Have

• Java
• AWS / GCP
• Kubernetes

Additional Information

• The selected specialist will undergo ID verification and potentially a background check.