General Information

Position
Sports Data Specialist Lead
Work arrangement
Plný pracovní úvazek
City
Gdaňsk, Katovice, Krakov, Lodž, Poznaň, Řešov, Štětín, Varšava, Vratislav
Country
Polsko
Department
Consulting
Team
Customer
Area of interest
Business Development, Consulting, Customer Experience & User Experience, Customer Service, Data & Analytics, Design / Graphics / Content Creation, Digital, Engineering, IT - Services, Project & Programme Management
Way of work
Hybridní model

Description & Requirements

Who we are looking for

✔ Do you design data models that bring clarity to complex, high-scale systems?
✔ Are you confident defining API contracts and documentation standards that engineers trust?
✔ Can you turn evolving requirements into clean, production-ready XML/JSON/YAML — without losing precision under pressure?

Join us in building the data backbone for the Olympic Games 🏅

In this role, you will own key data domains within a global Olympic technology program — shaping architecture, defining robust models, and designing APIs that power products used on the world’s biggest sporting stage.

If you believe that great systems start with great data — and you take pride in structure, clarity, and craftsmanship — this is your moment 🚀


This is more than a leadership role.
This is your opportunity to shape the digital experience of a global audience.


🌍 Why This Project Is Exceptional

🏅 Work on systems supporting the Olympic ecosystem

📱 Build a flagship mobile and web experience for a historic global event

🌎 Collaborate with international teams across Europe and beyond

⚙️ Deliver high-scale, mission-critical systems that must perform under worldwide attention

🚀 Operate at the forefront of digital transformation


Required Skills & Experience:

Data & Modeling
  • Strong data literacy: solid grasp of hierarchical data; XML 1.0, JSON, YAML 1.2 (scalars, sequences, mappings, nested structures).
  • Proven experience designing and reviewing complex XML/JSON/YAML schemas for large-scale, multi-team systems.
  • Foundations in data architecture: conceptual vs. logical modeling; exposure to ERDs and Logical Data Models in real-world projects.
Tools & Wrangling
  • Confident in VS Code/Cursor with format/validate extensions; able to define efficient workflows for the squad.
  • Capable in Excel or Python for inspection, transforms, and quick analysis of structured data.
Programming & APIs
  • Working knowledge of Python or TypeScript (both preferred); comfortable writing Python-like pseudocode to express logic.
  • Strong, hands-on experience consuming and documenting APIs in OpenAPI 3.0, including use of Swagger Editor or similar tools.
  • Ability to translate Figma/draw.io mockups and UX flows into well-structured JSON contracts and API payloads.
Collaboration & Communication
  • Excellent written and verbal English; able to produce crisp, unambiguous specs for developers and non-technical stakeholders.
  • Track record of proactive collaboration with engineers, designers, QA, and SMEs in distributed teams.
  • Comfortable facilitating discussions around data requirements, trade-offs, and edge cases.
Mindset
  • Entrepreneurial and creative, with strong attention to detail and consistency.
  • Intrinsically motivated to grow in data design/modeling/programming and help others do the same.
  • Calm under pressure; able to handle time-sensitive changes and evolving requirements without sacrificing quality. 
Nice to Have:
  • Experience writing technical documentation that developers genuinely appreciate and use.
  • Familiarity with schema validation (XSD/JSON Schema), migration/versioning strategies, and backward-compatible API evolution.
  • Previous experience in large-scale event, media, or sports-tech ecosystems. 
Your future role

Data Ownership & Architecture

  • Own and evolve data models and contracts for key business domains.
  • Quickly and accurately analyze technical documentation (PDF/Excel), understanding downstream implications for multiple systems and teams.
  • Define and enforce standards for XML/JSON/YAML structures, naming conventions, versioning, and documentation quality.
  • Drive conceptual and logical data modeling in collaboration with architecture leads.

Design & Documentation

  • Explore and analyze XML, JSON, YAML using advanced editors (VS Code/Cursor) with validation, auto-formatting, and schema checks.
  • Design clean and consistent XML/JSON/YAML structures to support high-quality technical documentation and reusability.
  • Document data flows with conceptual diagrams, mapping tables, and concise pseudo-code (XPath or Python-style).
  • Define and maintain REST APIs in OpenAPI 3.0, ensuring alignment between specifications and implementation.

Technical Leadership & Delivery

  • Provide hands-on support for backend flows (primarily in TypeScript) and reusable analytical snippets in Python.
  • Review and challenge data models, API specifications, and documentation created by other Data Specialists.
  • Collaborate with cross-functional teams (Backend, Frontend, UX/UI, QA, Product) to translate business and UX requirements into robust data contracts.
  • Own and maintain documentation in Confluence, ensuring clear specs, version history, and links to visual assets.
  • Ensure Jira epics, issues, and documentation remain aligned; promote transparency and delivery discipline within the team.

Mentoring & Ways of Working

  • Act as a go-to person for data structure, documentation, and API-related questions.
  • Mentor junior and mid-level Data Specialists on best practices in data modeling, API design, and technical writing.
  • Foster a culture of clarity, speed, and craftsmanship in all areas related to data contracts and documentation.

What we offer

Join us and become part of an elite tech community delivering groundbreaking digital products for the Olympic Games 🏅

As part of a strategic Olympic technology program delivered by Deloitte, you will help build and scale large, mission-critical systems that combine innovation, precision, and resilience. This is your opportunity to contribute to the digital backbone supporting one of the most complex and visible events in the world.

Work on high-impact, large-scale platforms that must perform flawlessly on a global stage — all within a supportive, international network focused on growth, engineering excellence, and technical mastery.

  • Annual bonus based on your performance.

  • Engage in complex, high-scale engineering initiatives.

  • Access training, certifications, and mentoring programs.

  • Work in a collaborative hybrid model.

  • Enjoy medical, wellness, and lifestyle benefits tailored to your needs.

  • Travel and collaborate with international teams across Europe and beyond.

Fringe Benefits:
  • B2B contract,
  • Hybrid/remote flexibility, modern tooling, learning budget, mentorship, and clear growth pathways,
  • Multisport and other lifestyle benefits,
  • Language courses,
  • Friendly coworkers & team spirit,
  • Preferential terms for medical and health insurance,
  • Multiple geographies and clients,
  • Work for well-known brands,
  • Exposure to trailblazing business and technology projects,
  • A place in the first line of a digital transformation,
  • Everyday opportunities to influence how and where we do our business,
  • Build a flagship mobile experience for a once-in-a-generation global event,
  • Work with top experts across product, design, and engineering- with modern tooling and real ownership,
  • A culture that prizes clarity, craftsmanship, and momentum; hybrid work with meaningful in-person collaboration.

Selection process
1️⃣ CV Review (HR Screening) 
2️⃣ Recorded Introduction (in English) - A short recorded introduction to help us better understand your communication style, motivation, and international readiness.
3️⃣ Initial Interview (approx. 60 minutes + Technical Challenge) - A live conversation with the hiring managers, combined with a technical task designed to reflect real scenarios from the project.
4️⃣ Case Preparation & Presentation - After successfully completing the technical challenge, you’ll be invited to prepare and present a case study. This stage allows us to assess your structured thinking, data modeling approach, and communication clarity in a practical context.
5️⃣ Offer & Welcome on Board!


About Deloitte
https://www.deloitte.com/pl/pl/careers/deloitte-life/culture-book-en.html

In Deloitte we support leading global organizations in optimizing and transforming their organizations. This also relates to their finance function. Our consultants offer insights, capabilities, and solutions that change the way these organizations operate and make people-related decisions.
We are currently building in Poland a dedicated team which will focus on advisory in the area of Finance & Performance. The Team will advise our Clients in complex issues relating to i.a. Reporting, Budgeting, Controlling processes. We are looking for high-energy, committed and ambitious people to join our advisory practice. Next to advising on most sophisticated and challenging issues relating to the above mentioned areas, our Consulting professionals will also advise on potential solutions leading to optimisation of the above mentioned processes. This will also include applying the newest technologies.
 Are you ready to join our team and help our clients imagine, deliver, and run their future?


About the team
At Deloitte Digital, we connect creativity with technology for business. Bringing empathy, ideas, and experience into digital transformation. We’re a creative digital consultancy that fuses strategy, tech and design to identify where businesses need to be, then get them there. Fast. We work with a wide range of iconic local and global organizations, helping them understand and profit from the online and mobile revolution. We approach our work with great energy and passion as we align our client’s business aspirations to the goals of the end user.

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