Job offer

Do you enjoy making sense of data and building the data infrastructure that drives company-wide decision-making? Would you like to help build a new SaaS product from the ground up?

We’re looking for a BI Engineer to join the Phonexia Voice Guardian team. Voice Guardian is our new cloud-based platform for voice biometrics and fraud prevention in bank contact centers.

Your Role

As a BI Engineer, you will be responsible for:

Designing, building, and managing the data solution for the Voice Guardian platform,

collecting and processing product, billing, and performance data,

preparing data for reporting and visualization, including dashboards for Product, Engineering, and Sales,

integrating and exporting data to customers’ and partners’ systems,

ensuring data quality, consistency, and auditability, especially for billing,

gradually expanding the data solution to connect Product, Sales, Marketing, and Finance.

Skills You Will Need

To excel in this role, you should be proficient in:

Experience designing data solutions, including dimensional modeling (Kimball, star/snowflake schema) or Data Vault. You understand when different approaches make sense

Strong knowledge of databases, including relational and document databases and their trade-offs.

Experience with data tools and orchestration, such as dbt, Airflow, Dagster, or similar.

Python skills for data processing, automation, and integrations.

Experience with cloud data services. We use AWS, so experience with S3, Athena, Glue, Redshift, or Aurora is a plus. Experience with another cloud platform is also welcome.

A strong focus on data quality and accuracy — especially when it comes to billing, where every cent matters.

Good English communication skills, including the ability to write documentation and communicate with international colleagues and customers.

Nice to have:

Experience with streaming data and Kafka,

experience building and maintaining ETL/ELT pipelines,

knowledge of BI and data visualization tools such as Power BI, Tableau, Looker, Superset, or QuickSight,

experience with lakehouse technologies and data formats, such as Parquet, Iceberg, or Delta Lake,

experience with data observability or usage-based billing in SaaS,

experience integrating CRM, marketing, or financial data,

understanding of data privacy and security, including GDPR and multi-tenant environments.

What Makes This Role Unique?

You won’t be maintaining legacy reports. You’ll design the Voice Guardian data layer from the ground up and have a real say in how it is built.

You’ll work in a small, experienced team where your work has a visible impact on billing, platform performance, and the future of the product.

Why Phonexia?

Modern and cool – Did you know that human voice is as unique as a fingerprint? That is what Phonexia focuses on. We develop technologies and solutions that solve everyday challenges and unlock voice potential.

Culture and cooperation – We help each other, learn from each other, and stand behind each other. We are a team. Phonexia's culture is unique. We are also proud to be the best Czech company of 2021 when we won first place in the IBM Company of the Year contest.

Learn and grow – Conferences, workshops, mentoring, language lessons... Every employee can use an educational budget for personal and professional development.

Agile – We need to be agile as we focus on what business and our customers need. Our work depends on our customers.

Flexibility – Flexible working hours and working from home? We value team cooperation, and we believe that the team spirit arises from personal interactions. However, occasional remote work provides a good time to concentrate, finish complex tasks, and to lower daily travel time. That said, we would like you to work from our offices in Brno-Královo Pole.

Benefits – We know you are curious! 😊 We've taken a bold step to enhance our work-life balance by adopting a four-day workweek. In addition to this, our benefits package includes vacation days, sickdays and meal allowance. Multisport or Benefit Plus, office refreshments, access to a game room, and engaging company events.

It's 55 of us together who are pushing the boundaries of speech technologies forward.
Do not hesitate to join us!

BI Engineer

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