Data Platform Engineer – fintech sector (f/m/x)

Sii Poland; Bydgoszcz; On-site; PLN 180,000 - 300,000; Full time

Benefits offered by this job

Great Place to Work

Solid financial situation

Discounted training & certifications

Centre of internal trainings

Many experts you can learn from

Open management team

Profit sharing

MySii app

Medical care

Job summary

Sii Poland is seeking a Data Platform Engineer to shape and scale our cloud-based data platform across AWS and GCP. You will build data lakes and warehouses, implement orchestration and observability, and collaborate with Data Engineers, Scientists, and Analysts to enable data-driven decisions.

You will drive secure, cost-efficient data infrastructure, improve monitoring, and automate deployments while aligning with governance standards and engineering best practices.

Qualifications

• 5+ years of experience in Data Engineering or Data Platform Engineering.
• Strong DevOps practices and cloud technologies (AWS/GCP).
• Expertise with BigQuery security, performance and cost management.
• Experience with AWS data lake architectures (Athena, S3, Glue).
• Python and modern data tech (Airflow, dbt).
• Security and access management for data platforms.
• Observability and monitoring solutions (Grafana, CloudWatch).
• Excellent communication and collaboration with stakeholders.
• Fluent English and Polish; Poland residency required.

Responsibilities

• Build and maintain Data Platform infrastructure across AWS and GCP (data lakes, data warehouses, orchestration, observability).
• Enhance platform with new features, improve monitoring, automate operational tasks.
• Develop CI/CD driven deployment processes for reliability and scalability.
• Collaborate with Data Engineers, Data Scientists, and Data Analysts to support MLOps platform.
• Manage data estate, IAM, storage, monitoring, and cost control.
• Design secure, compliant data infrastructure solutions.
• Improve performance, security, and operational efficiency across cloud environments.
• Work with stakeholders to deliver platform capabilities meeting needs.
• Uphold engineering practices: code reviews, CI/CD, IaC, governance.

Skills

Python

BigQuery

AWS/GCP

Docker

Terraform

Airflow

dbt

CI/CD

English

Polish

Tools

Grafana

CloudWatch

Athena

S3

Job description

Join Sii and work with one of Europe's leading fintech scale-ups.

We are looking for a Data Platform Engineer to help shape the future of the data ecosystem. In this role, you will build, maintain, and enhance our cloud-based data platform across AWS and GCP, enabling scalable, secure, and cost-efficient data solutions for the wider business.

You will work at the intersection of engineering, infrastructure, and data, partnering closely with Data Engineers, Data Scientists, Data Analysts, and other stakeholders to deliver a platform that supports current and future data needs. This role is ideal for someone who enjoys designing data platforms, evaluating technical trade-offs, and building reliable infrastructure that empowers teams across the organization.

Your tasks

• Build and maintain the Data Platform infrastructure across AWS and GCP, including data lakes, data warehouses, orchestration, and observability components
• Enhance the platform by introducing new features and services, improving monitoring and observability, and automating common operational tasks
• Develop and maintain CI/CD-driven deployment processes to improve platform reliability, scalability, and developer experience
• Collaborate closely with Data Engineers, Data Scientists, and Data Analysts to support and evolve the MLOps Platform
• Manage and optimize the data estate, including IAM and access policies, storage management, platform monitoring, and cost control
• Design and implement secure, compliant, and user-friendly data infrastructure solutions
• Continuously improve platform performance, reliability, security, and operational efficiency across cloud environments
• Work with stakeholders across and beyond the data organization to understand requirements and deliver platform capabilities that meet their needs
• Contribute to and uphold strong engineering practices, including code reviews, CI/CD, infrastructure-as-code, and established data governance standards

Requirements

• At least 5 years of experience in Data Engineering and/or Data Platform Engineering
• Strong infrastructure and platform engineering experience, including modern DevOps practices, cloud technologies, AWS and GCP, Docker, and Terraform
• Expertise with BigQuery, including security, performance optimization, and cost management
• Experience working with AWS data lake architectures (Athena, S3, Glue), including query optimization, security, and cost-efficient design
• Proficiency in Python and modern data technologies such as Airflow and dbt
• Solid understanding of data security, platform security, and access management
• Experience implementing and maintaining observability and monitoring solutions, such as Grafana and CloudWatch
• Strong analytical and problem-solving skills, with the ability to evaluate technical options and make informed trade-offs
• Excellent communication skills and the ability to collaborate effectively with both technical and non-technical stakeholders
• Comfortable working in environments with high engineering standards, including CI/CD, code reviews, pull requests, and established governance practices
• Fluent English (both written and spoken)
• Residing in Poland required
• Fluent Polish required

Nice to have

• Experience designing or building MLOps platforms and supporting machine learning workflows in production environments

Job no. JOB-BA3XG

Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.

Benefits For You

• Great Place to Work
• Solid financial situation
• Contracts with the biggest brands
• Centre of internal trainings
• Many experts you can learn from
• Open and accessible management team
• Profit sharing
• Passion Sponsorship program
• Regular integration events and trips
• Comfortable and well-equipped offices
• MySii app
• Medical care