Signal Processing & Data Analysis Specialist (f/m/x)

Sii Poland; Łódź; On-site; PLN 170,000 - 260,000; Full time

Benefits offered by this job

Centre of internal trainings

Many experts you can learn from

Profit sharing

Medical care

Great Place to Work

Contracts with the biggest brands

Job summary

Sii Poland is seeking a Signal Processing & Data Analysis Specialist to join our Data Science team. You will provide technical guidance to migration, engineering, and clinical teams, ensuring a shared understanding of algorithm behavior and expected output characteristics.

You will validate algorithms, develop validation frameworks, and create CSV-based comparison workflows to verify consistency across environments, working with cross-functional teams in Poland.

Qualifications

• Minimum 5 years validating algorithms or software with data comparison workflows.
• PhD in Electrical Engineering, Applied Mathematics, Physics, Data Science, or related field.
• Strong knowledge of digital signal processing and time-series analysis.
• Proficiency in Python with SciPy, NumPy, or pandas.
• Excellent communication of complex technical concepts to non-specialists.
• Advanced English and residency in Poland.

Responsibilities

• Provide technical guidance on signal processing to cross-functional teams.
• Analyze datasets to identify deviations and anomalies using statistical methods.
• Document existing signal processing algorithms for validation and knowledge transfer.
• Design validation frameworks and define tolerance thresholds and acceptance criteria.
• Develop and run CSV-based comparison workflows to verify consistency across environments.
• Collaborate with migration engineers to resolve data-integrity issues with traceability.

Skills

Algorithm validation

Python (SciPy/Numpy)

Communication to stakeholders

English proficiency

Education

PhD in a quantitative field

Tools

CSV workflows

Job description

We are looking for a Signal Processing & Data Analysis Specialist to join our Data Science team. In this role, you will provide technical guidance to migration, engineering, and clinical teams, ensuring a shared understanding of algorithm behavior and expected output characteristics. If you are passionate about applying your expertise in data science to validate algorithms and support system transitions, this opportunity may be the right fit for you.

Your tasks

• Providing technical guidance on signal processing to migration, engineering, and clinical teams, ensuring a shared understanding of algorithm behavior and expected output characteristics
• Analyzing datasets to identify deviations, edge cases, and anomalies, applying appropriate statistical methods to assess the significance of discrepancies
• Deconstructing the logic of existing signal processing algorithms and producing clear, well-structured documentation to support validation efforts and enable knowledge transfer across teams
• Contributing to the design of validation frameworks and test cases, including defining tolerance thresholds and acceptance criteria for comparing algorithm outputs across environments
• Developing and executing CSV-based comparison workflows to verify the consistency of algorithmic output, identifying and quantifying discrepancies
• Collaborating with data migration specialists and engineers to resolve data-integrity issues, ensuring all deviations are properly quantified, documented, and traceable

Requirements

• Minimum 5 years of experience with algorithm or software validation, developing data comparison or reconciliation workflows using large tabular or CSV datasets
• PhD in Electrical Engineering, Applied Mathematics, Physics, Data Science, or a related quantitative field
• Solid understanding of digital signal processing and time-series analysis
• Proficiency in Python, including familiarity with libraries like SciPy, NumPy, or pandas
• Ability to communicate complex technical concepts to stakeholders outside your specialty
• Advanced level of English and residency in Poland

Nice to have

• Familiarity with database migrations or platform equivalency testing
• Experience with high-frequency sensor data

Job no. JOB-X6HBA

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