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Date:  19 Aug 2025
Company: 
Location: 

Sofia, BG

Senior BI Developer

Whether you’re just starting out or bringing years of experience, at Yettel we believe the right role isn’t just about responsibilities — it’s about growth, impact, and being part of something meaningful.

Take a look — this might be the opportunity you've been waiting for!

 

The impact you’ll make:

We are looking for a Senior BI Developer to take a key role in shaping Yettel’s data-driven decisions. In this role, you will design, develop, and optimize Business Intelligence solutions that turn data into actionable insights. You will collaborate closely with stakeholders, ensure stability and performance of BI systems, and drive continuous improvements that elevate how we use data across the company.

 

What you’ll do:

  • Analyze and evaluate business requirements to design effective BI solutions

  • Develop, configure, test, and document BI systems, reports, and data models

  • Optimize performance of BI platforms through tuning and continuous improvement initiatives

  • Prepare technical plans, operational procedures, and collaborate with vendors when needed

  • Contribute to BI-related projects, providing technical expertise and documentation

  • Lead internal and user acceptance testing, implementation, monitoring, and change management

  • Conduct trainings and support users in their daily work with BI systems

  • Proactively suggest improvements and define standards to enhance BI efficiency

 

To thrive in this role, you’ll need:

  • Data Transformation Expertise: Hands-on experience with Python for data processing and transformation

  • BI Systems Knowledge: Proven track record in BI platforms, data modeling, reporting, and system optimization

  • Analytical & Technical Thinking: Ability to translate complex business requirements into robust BI solutions

  • Communication & Collaboration: Skilled at presenting insights and working with stakeholders across teams

  • Project Execution: Experience driving BI-related projects from requirements to implementation and support

  • Organization & Planning: Strong ability to prioritize, manage timelines, and ensure successful delivery

  • Reliability & Integrity: Commitment to data security, quality standards, and professional accountability

 

What’s in it for you:

Financial & Time-Off Perks

  • 21 days of paid leave (birthday included!)

  • +4 bonus days if you use all your time off

  • 1-month sabbatical every 5 years

  • Annual performance-based bonus

  • Monthly food & gift vouchers

  • Travel allowance

Mobile & Tech Goodies

  • Unlimited mobile & internet

  • Exclusive discounts on devices and accessories

Health & Wellbeing

  • Premium health insurance

  • In-house psychologist, sports at the office, expert talks

  • Discounted Multisport or Coolfit cards

Growth & Learning

  • Access to top online learning platforms

  • Supportive team and manager environment

  • Space for your ideas to shape what we build

Purpose & Culture

  • Do work that matters — create real impact

  • Strong commitment to sustainability and social responsibility

 

A tip from us:

AI is great, but this part is all you! For your application, we’d love to hear your own thoughts, experiences, and motivation.
And don’t worry if you don’t tick every box — if this role excites you, go for it! We value potential over perfection.

 

Join Yettel now by sending us your up-to-date CV.

Only shortlisted applicants will be contacted regarding the next steps of our selection process.

All applications will be treated with strict confidentiality, in line with applicable personal data protection laws.

Apply now »