ML/Data Engineer

Andersen; Warszawa, Wrocław, Kraków; Remote; PLN 206,000 - 324,000; Full time

Benefits offered by this job

Private health insurance

Mentoring and adaptation program

Annual bonus potential

Job summary

Andersen is seeking an ML/Data Engineer to build an AI-powered sports performance platform. You will design scalable data infrastructure and real-time data pipelines for athletes and coaches across international markets.

You will work with data scientists and ML engineers to ensure reliable data foundations, low-latency features, and robust governance across platforms.

Qualifications

• 5+ years in software or data engineering with production data infra.
• Strong Python and SQL with real-time and time-series systems.
• Experience with time-series DBs and streaming ingestion.

Responsibilities

• Design and build production data infrastructure for high-volume athlete data.
• Create real-time ingestion pipelines for streaming data.
• Design storage for time-series and longitudinal athlete records.
• Enable production features for ML systems with low latency.
• Model data relationships for athletes, training, and outcomes.
• Build multi-tenant, auditable data pipelines and provenance.

Skills

Python

SQL

Time-series data

Real-time streaming

Graph data models

Multi-tenant systems

English communication

Go

Data ingestion

ML data platforms

Tools

InfluxDB

TimescaleDB

Prometheus

Kafka

Kinesis

Flink

Spark Streaming

Pulsar

AWS (ECS, EC2, Lambda)

GraphQL/ REST/ gRPC

PostgreSQL/MongoDB

Job description

Andersen is hiring an ML/Data Engineer for a project developing an AI-powered sports performance platform and delivering scalable data solutions and real-time insights for athletes and coaches.

Our customer is a global technology provider specializing in performance monitoring, data analytics, and operational optimization. It develops software platforms and data-driven solutions that help organizations improve efficiency, gain valuable insights, and make informed decisions. Serving clients across international markets, the company focuses on innovation and integrated technologies that enhance performance and support long-term growth.

The project is focused on developing an AI-powered sports performance intelligence platform that integrates sensor data, video, sports science, and historical athlete performance data. It includes building scalable data infrastructure and machine learning capabilities to deliver reliable, real-time insights for coaches, athletes, and performance teams across a global platform.

Responsibilities

• Designing and building production data infrastructure for high-volume athlete performance and sensor data.
• Building and operating real-time and near-real-time ingestion systems for streaming data.
• Designing storage and data architectures for high-volume time-series data and longitudinal athlete records.
• Building infrastructure that makes production features and derived metrics available to machine learning systems and AI agents with low latency.
• Designing and implementing graph data models and schemas representing relationships between athletes, training loads, injuries, performance, and outcomes.
• Building data and ML evaluation infrastructure that helps measure model reliability, calibration, and performance across real-world cases.
• Designing systems that maintain strong tenant-level data isolation across clubs and customers.
• Establishing appropriate data provenance, lineage, auditability, and observability across the platform.
• Working with ML and AI engineers to provide reliable data foundations for model training, inference, and evaluation.
• Working with sport scientists and domain experts to translate complex requirements into durable production systems.
• Making pragmatic technology and architecture decisions as the platform evolves.

Must-haves

• Full-time professional software or data engineering for 5+ years, excluding internships, university placements, coursework, and academic projects.
• Proven experience designing, building, and operating production data infrastructure at scale.
• - Strong experience with time-series data or time-series databases (InfluxDB, TimescaleDB, Prometheus, ClickHouse, or equivalent).
• Significant experience with real-time or streaming data ingestion (Kafka, Kinesis, Flink, Spark Streaming, Pulsar, or equivalent).
• Experience designing graph data models or graph database schemas, not only querying an existing graph database.
• Experience designing or operating multi-tenant systems with tenant-level data isolation.
• Strong Python and SQL.
• Experience with production systems where reliability, scalability, observability, and data correctness matter.
• Ability to own ambiguous technical problems and turn them into practical production architecture.
• Experience working directly with data scientists, ML engineers, or other technical domain specialists.
• Level of English – from Upper-Intermediate+ and above.

Nice-to-haves

• Professional experience with Go.
• Experience building probabilistic evaluation, model calibration, or model monitoring infrastructure.
• Experience with causal inference, counterfactual modelling, or simulation.
• Understanding of wearable sensors, IoT data, biomechanics, sports technology, or other high-frequency telemetry.
• Knowledge graphs or domain-specific ontologies.
• LLM or AI evaluation frameworks and an understanding of their limitations.
• Experience with AWS, including ECS, EC2, Lambda, SNS, or SQS.
• Experience with GraphQL, REST, gRPC, Postgres, MongoDB, or similar technologies.

Reasons why this job would be interesting to you

• Experience in teamwork with leaders in FinTech, Healthcare, Retail, Telecom, and others. Andersen cooperates with such businesses as Samsung, Siemens, Johnson & Johnson, BNP Paribas, Ryanair, Mercedes, TUI, Verivox, Allianz, T-Systems, etc..
• The opportunity to change the project and/or develop expertise in an interesting business domain.
• Job conditions – you can work both fully remotely and from the office or can choose a hybrid variant.
• Guarantee of professional, financial, and career growth! The company has introduced systems of mentoring and adaptation for each new employee.
• The opportunity to earn up to an additional 1,000 EUR per month, depending on the level of expertise, which will be included in the annual bonus, by participating in the company's activities.
• Access to the corporate training portal, where the entire knowledge base of the company is collected and which is constantly updated.
• Bright corporate life (parties / pizza days / PlayStation / fruits / coffee / snacks / movies).
• Certification compensation (AWS, PMP, etc).
• Referral program.
• Private health insurance and sports compensation, depending on the type of employment.

Your personal data is protected in accordance with GDPR regulations. Learn more: https://andersenlab.com/privacy-policy

Your personal data is protected in accordance with GDPR regulations. Learn more: https://andersenlab.com/privacy-policy/pl