Freelance - Senior Data Solution Engineer

Posted 4 Days Ago
Be an Early Applicant
Hiring Remotely in Spain
Remote
450-450 Hourly
Senior level
Software
The Role
Freelance Senior Data Solution Engineer responsible for delivering approximately two custom client data projects monthly. Duties include qualifying requirements, analyzing large datasets with Python and SQL, building dashboards and predictive models, developing business recommendations, presenting findings to clients, documenting projects, and sharing insights with Product. The role requires fluent Spanish and English, freelance status, and availability for a full-time four-to-five-month mission based in Barcelona or Madrid.
Summary Generated by Built In

Started in France in 2016, MyTraffic’s mission is to empower commerce professionals with the best location analytics and insights to make smarter decisions every day and design the best experiences in physical locations.

We already serve more than 500 customers across multiple sectors — Retail, Real Estate, Cities, and Electric Vehicles (EV Connect) — all over Europe, helping them expand their businesses, analyze or predict investment performance, better understand customer behaviors, and benchmark results against competitors.

Backed by a €30M Series B fundraising round in November 2022 and strengthened by the strategic acquisition of Geoblink in January 2024, Mytraffic has become Europe’s leading location intelligence platform.

2026 will be a pivotal moment for Mytraffic. Joining us now means being part of a major transformation, as we launch an AI-powered product and redefine our go-to-market strategy around a strong Product-Led Growth approach.

📝 Job Description :

Our Custom Solutions team builds what our most demanding clients cannot get from the platform alone, and it runs out of capacity exactly when demand peaks. We are bringing in a freelance Solution Engineer for a 4 to 5 month mission to own custom data projects end-to-end through our busiest season.

Concretely, you unlock projects we would otherwise have to turn down, with around 2 client projects delivered per month, from qualifying the need to presenting the results back to the client. Your analyses feed the strategic decisions of retail, food & beverage, real estate and public sector leaders in France and Spain, on mobility data nobody else has.

You also free up the team’s senior capacity for our shift to Gini, our AI-powered product. High ownership, clear deliverables, no bureaucracy.

🤝 About our team :

You join the Custom Solutions team (Professional Services), 6 people between Paris and Spain, reporting to Mathurin. Day-to-day you work with Custom Team, the two Senior Solution Engineers who carry delivery, and closely with the Account Executives, Product and Data teams. The team is senior and autonomous, everyone owns their projects from the first client call to the final restitution and ships client-facing work every week.

💼 To give you more details about your day-to-day at MyTraffic :

  • Own around 2 custom client projects per month, end-to-end, from needs qualification to final restitution

  • Build the deliverables yourself, in Python (pandas) notebooks, SmartDash dashboards, mockups and SQL (BigQuery / Snowflake)

  • Qualify client needs with our Account Executives and turn them into a scoped, sellable analysis

  • Model where depth is required, from footfall to performance forecasting, to sharpen the recommendation

  • Present results directly to clients, handle their questions live, and turn feedback into next steps

  • Master our data ecosystem, how each source is produced, what it can answer and what it cannot

  • Document each project and hand it over cleanly, so the work outlives the mission

  • Share insights with the Product team to make the platform absorb tomorrow what is custom today

🫵 About you :

🛠️ Hard skills

  • 3+ years in a technical or solution engineering role in a SaaS company, delivering analyses or custom solutions to external clients

  • Strong Python (pandas) and SQL, you build a complete analysis on large datasets without support

  • Comfortable building predictive models (forecasting) and turning them into a business recommendation

  • Able to produce client-ready outputs, dashboards, mockups and restitution decks

  • Spanish and English fluent (required), French is a plus

  • Freelance status with your own company structure, based in Barcelona or Madrid, available for a full-time mission of 4 to 5 months starting ASAP

🤝 Soft skills

  • Client communication, you make a complex analysis simple and hold your own on questions and objections

  • Autonomy and business sense, you challenge your own results before showing them to a client

  • Ownership, you carry a project from conception to handover without being chased

  • Agility, you run several fast-paced projects in parallel and re-prioritise without drama

  • Fast learner and team player, you plug into a small remote squad and document as you go

🎁 What we offer :

Joining our scale-up means:

Attractive package, around 450€/daily, invoiced monthly over a 4 to 5 month mission

✅ Tailored support – A context pack and a senior team to ramp you up fast on our data and our clients

✅ A real impact – Your projects feed the strategic decisions of Europe’s leading retail and real estate players

✅ A culture of innovation – Thrive in an environment that values creativity and ambition, as we launch our AI-powered product

✅ Flexibility – Fully remote from Barcelona or Madrid, with our offices open to you and regular syncs with the Paris team

⚙️ The Recruitment Process

Freelance profiles get booked fast, so we run a lean process, less than 1.5 weeks end-to-end.

1️⃣ 30 min with our Talent Acquisition Manager – availability, day rate, location, languages, motivation

2️⃣ 60 min business case with the Senior Solution Engineers – live client restitution simulation and technical debrief

3️⃣ 30 min final interview with the Head of Custom team / CSM – scope, terms and decision

Skills Required

  • 3+ years of experience in a technical or solution engineering role in a SaaS company delivering analyses or custom solutions to external clients
  • Strong Python and pandas skills
  • Strong SQL skills and ability to analyze large datasets independently
  • Experience building predictive models, including forecasting, and translating results into business recommendations
  • Ability to produce client-ready dashboards, mockups, analysis outputs, and presentation decks
  • Fluent Spanish and English
  • Freelance status with an established company structure
  • Based in Barcelona or Madrid
  • Available for a full-time four-to-five-month mission starting as soon as possible
  • French language skills
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The Company
HQ: Paris
147 Employees
Year Founded: 2016

What We Do

Mytraffic redefines the location intelligence category. Our SaaS platform provides easy access, precise and accurate data on any physical location in real-time in Europe. We support organizations in many different sectors (Retail, Real Estate, Consulting companies, Cities, Consumer Goods, Advertising etc.) to help them expand their businesses, increase the performance of managed assets, optimize marketing reach and benchmark their results with competition Our unique platform transforms multiple data sources into actionable insights (dynamic footfall, vehicle flow, visitor profiling) at scale, with respect to the strictest GDPR compliance rules. Mytraffic closed a €30 Million Series B funding in November 2022 with Axa Venture Partners, Alven and Kernel Investissements.

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