Junior Data Engineer

The posting

📅 Start date

• Q3 2026 - from September, 3-month notice period accepted

🏡 Contract type

• Permanent contract (CDI), full-time
• Seniority: Junior (0-2 years of experience)

🌍 Location

• Hybrid (Lausanne) or 100% Remote (Europe)

💼 About the role

DotWorld is a fast-growing Venture Builder and SaaS Studio, operating several subscription SaaS products at scale. Data is recognized as a strategic pillar of the group, and we are now building our data department in-house.

As a Data Engineer, you will join this department as it takes shape, working alongside its Lead. Your mission: grow our Data Warehouse. You will help consolidate and extend the scope of our data - payments as well as product data - and model our payment flows, so we have reliable data ready for reporting and decision-making.

Your work will directly shape how the group is steered: the pipelines you build will make it possible to compute customer LTV, define our target CPAs, and thus drive our advertising spend. A role where you will learn a lot - and where what you build actually gets used.

👥 The team

You will join the data department, reporting directly to the CEO and currently being built from the ground up. The team starts at two: Youssef JANJAR, our Head of Data and your direct manager, and you - the department's first hire. The team is set to grow quickly: you will have a front-row seat in a "build everything" environment. You will also work closely with the payment and product teams.

📂 Your responsibilities

Onboarding & scoping

• Get up to speed on access: payment and billing data APIs, Data Warehouse (currently hosted in SQL)
• Understand the business model and the data behind it
• Brainstorm data and ETL/ELT pipeline architecture with the Head of Data

Business needs gathering

• Talk to the relevant teams (payment, product) to understand their data needs
• Harmonize sources and make data accessible

Build & automation

• Develop integrations into the Data Warehouse (ETL/ELT pipelines)
• Model raw data into clean tables (fact/dimension tables, right granularity)
• Automate processing with Python scripts

Delivery & quality

• Build clear dashboards for business teams
• Define and implement data validation tests

⭐ Your profile

Experience

• Seniority: Junior
• 0-2 years of experience
• Hands-on data projects (personal, academic, or internships) demonstrating very solid SQL and Python and strong data engineering fundamentals
• Appetite for a startup environment where everything is still to be built
• Big plus if you have already worked with online payment data and APIs

Technical skills

• Must-haves: Solid SQL Solid Python Git and Unix commands Data modeling fundamentals: fact/dimension tables, right granularity Warehouse maintenance fundamentals: full vs incremental loads, merge/upsert, re-runnable/idempotent pipelines AI native: proficient with AI coding tools to move fast (Claude Code preferred, Cursor/Copilot ok)
• Nice-to-haves (we do not filter on these): dbt, Dagster A cloud warehouse (BigQuery, Snowflake…) Experience with payment processor data

Interpersonal skills

• Curiosity: you ask the right questions
• Autonomy, for a junior profile
• Comfortable engaging with business teams (payment, product) to gather and challenge their needs

Language skills

• English: fluent (working language)
• French: fluent

✅ What makes this role attractive

• Founding role: first hire of a data department under construction - you help build everything (architecture, pipelines, tooling choices) rather than inheriting a legacy setup
• Close mentorship: direct coaching from the Head of Data, who reports to the CEO - accelerated learning
• Real impact: your work is actually used by internal teams to make decisions
• Skill growth: data engineering fundamentals plus bonus topics (dbt, Dagster, cloud, payment data)
• Modern coding culture: AI coding tools fully embraced to move fast
• Flexibility: hybrid in Lausanne or remote in Europe
• Outlook: a department set to grow fast, with real opportunities to progress

👣 The challenges

• A brand-new department: a team of two, no established data community yet - the Head of Data supports you daily, but you need to enjoy autonomy and ambiguity
• Everything is still to be built: few existing processes, docs, or standards - a playground for some, a real change of pace for others
• A broad scope: payment + product, pipelines + modeling + dashboards + quality - you need to prioritize
• High bar on the fundamentals: no compromise on SQL/Python and data engineering rigor
• Sensitive topic: payment and revenue data - rigor and reliability expected

📋 Our recruitment process

• Discovery interview with our Talent Acquisition Manager, Noémie - 30 min
• Live technical interview with our Head of Data Youssef and our DevOps Engineer Alexander - 1h30
• Culture interview with our CHRO, Leandra, and our CEO, David - 1h
• 1 reference check

ℹ️ About DotWorld

DotWorld is a Venture Builder and SaaS Studio. Our model is simple but demanding: we design, launch, and scale several SaaS products in parallel. Our fully distributed team runs on a strong culture: Test, Learn, Scale. We build practical tools that make everyday life easier for millions of people around the world. Today, our activity is structured around several product universes, ranging from HR tools to content management and design creation solutions.

Our approach We build robust, intuitive, and technically solid SaaS products. Once the foundations are mastered, we roll them out internationally through extensive translation and localization work. Acceleration then comes from a high-performing acquisition strategy, driven by our SEO and SEA experts.

This model works - and it works well

More than 50 million visitors per year 0 fundraising: 100% self-funded growth Profitable from year one From 1 to 50+ team members in 4 years

An autonomous, committed, and demanding team We build all of this as a team. Our strength is autonomous, committed people, where everyone has a real impact. 90% of the team works remotely, with a culture built on trust, flexibility, and respect for individual rhythms. We cultivate a caring, stimulating, and demanding environment, where individual growth fuels collective success.

A culture of excellence At DotWorld, we aim for high standards: quality, rigor, and efficiency in the service of impact. We are results-oriented: performance and pushing our limits drive us every day. Continuous improvement, innovation, and creativity are at the heart of our culture. Each product is refined iteratively until it reaches its best possible version. We adopt the latest technologies thoughtfully, to deliver modern, high-performing solutions built to last.

What's next? We are looking for curious, autonomous, clever, and enthusiastic profiles - people who love doing, testing, building, improving… while aiming high. 👉 Want to join us? We can't wait to talk to you.

🌿 Work environment

• Professional development opportunities: at DotWorld, we believe every employee has the potential to outdo themselves. We offer opportunities to learn, grow, and shape the future of our company.
• A culture of innovation: we constantly encourage our teams to think outside the box and bring new ideas.
• Strong company growth, which means strong career prospects in the years to come.
• Everything is still to be created: every idea, every initiative counts in building our culture, our projects, and our vision together.

👥 Diversity

DotWorld fully embraces the principle of equal opportunity and access to employment for all. We believe in an inclusive work environment where everyone can thrive and contribute to our collective success, whatever their identity or background. We thank all candidates for their interest and the time they invest in their application.

⭐ Our HR perks

🗺️ Remote work - Europe Work from any country in Europe, freely and simply.

☕ Coworking budget If you prefer working outside your home, we cover your coworking space up to 200 euros per month for more comfort and focus.

🌴 Tailor-made vacations Take the time off you need to recharge. We trust you to manage your free time.

⌛ Flexible hours Organize your schedule as you wish, because your work-life balance is a priority.

🌏 Remote work - worldwide Get a change of scenery and work remotely from a different time zone for a month.

🖥️ Equipment budget We give you a budget to get everything you need: laptop, desk, chair, screen, headset… everything to be at your best!

🥳 2 offsites per year Twice a year, we get together as a team for inspiring and fun moments: one in spring and one in autumn.

For Lausanne-based profiles: modern offices, gym access, parking, contribution to commuting costs.

🌻 Our values

PERFORMANCE "Obsessed with Impact" We are a high-performance company. We never confuse motion (being busy) with progress (producing results). We believe that working with excellent colleagues is the best perk we can offer. Excellence is not an option, it is our baseline standard.

OWNERSHIP "Act like an Owner" In many companies, when there is a problem, people look for someone to blame. Here, we look for the solution. Ownership means acting as if it were your own money and your own company. There is no "that's not my job". If you see litter on the floor, you pick it up. If you see a bug, you make sure it gets flagged.

INTEGRITY "We act with honesty, consistency, and professional courage." In a team, integrity means everyone is held accountable for their performance, their attitude, and the impact of their behavior on the collective. We support each other, play as a team, and take care of one another, while recognizing that trust is built through reliability, contribution, and upholding standards. Integrity means saying things with clarity and respect, even when it is uncomfortable. It means aligning words with actions, accepting feedback, and understanding that everyone must earn their place on the field through commitment and behavior. We believe that kindness without high standards leads to complacency, and high standards without kindness lead to tyranny. Integrity is that balance.

GROWTH "Always be Learning" The world changes too fast to rest on past achievements. DotWorld is a school. Our promise is simple: you will work hard, but in 2 years you will have gained 5 years of professional experience. We value the learning curve (the slope) more than past experience (the starting point).