Full Stack Product Engineer – B2B Marketing & Lead Management (m/f/d)

Thousands of small and mid-sized businesses find SIXT online every month, and each one is a potential B2B customer. You'll build the engine that turns that digital interest into revenue, from the first click to the first rental: generating leads, scoring them, getting them to the right people fast, and measuring what pays. You join a small cross-functional team in Lisbon that works directly with marketing and business leaders at our HQ in Munich, Germany, with one mission: make SIXT's B2B marketing and lead management measurably better. You don't build infrastructure from scratch: SIXT runs a strong, ready-made AWS platform that all our engineering teams build on, and you use it from day one, so you start fast and stay fast. There are no sprint ceremonies and no quarter-long roadmaps. You ship in days, watch what happens in production, and iterate. AI agents write all the code and all the tests. You decide what gets built, hold the quality bar, and own the result. If you want to ship on Thursday what you thought of on Monday, this is your team.

YOUR ROLE AT SIXT

• You own features end to end across the B2B lead lifecycle, from generating leads to scoring and processing them, taking each idea all the way to running in production on AWS and turn a marketing question into a live experiment within days, build it, ship it, measure it, then double down or drop it. Bigger bets take weeks, not quarters
• You build with AI coding agents such as Claude Code as your only way of working. The agents write the code and the tests. You shape the spec, direct the work, and decide what is good enough to ship
• You build on our production AI infrastructure, the LLM gateway and the managed agent platform, and put AI directly into the lead flow, from LLM-powered features to agents that run in production
• You run what you build - pipelines, deployments, observability, and security of your services are yours, DevSecOps by default
• You wire our lead flow into the platforms B2B marketing lives on, such as Salesforce, Google, and LinkedIn, so no lead gets lost between the first click and the first sales conversation
• You're full-stack by mindset - you solve the problem with whatever it needs, whether that's a backend service, a React frontend, or a scoring model in Python. Most problems in lead processing live in the backend, so that's where much of your work lands

YOUR SKILLS MATTER

• Experience You've shipped and operated production backend services and data pipelines. Today we mostly run Java and Go microservices with Kafka and PostgreSQL on AWS, and Python for data and scoring, but the language matters far less than how fast you learn and deliver
• Data You're at home in SQL and data warehouses, and you know how event tracking and web analytics such as GA4 work, and where they break
• AI Engineering Coding agents are already part of your daily workflow. You know how to direct them, review their output critically, and spot when they're wrong. Beyond that, you're excited to build on real AI infrastructure: we run an LLM gateway and a managed agent platform in production, and you'll use both. Experience with either is a plus; the appetite to build AI into a product is what counts
• Ownership You build, deploy, and observe your own services, and you treat security, testing, and monitoring as part of the job, not someone else's
• Speed You'd rather ship a small working version this week than a perfect plan next month, and you know how to iterate fast without letting quality slip
• Curiosity No marketing or B2B background needed. What you need is the drive to understand how leads become customers and which numbers actually matter and you work hand in hand with marketing and business leaders in Lisbon and at our Munich HQ and with our CRM engineering team, push back on vague asks, and turn them into experiments that prove or kill an idea within days

WHAT WE OFFER

• A Global Tech Hub in Lisbon Join a thriving international tech community and work alongside engineers, product experts, and business teams who turn ideas into real impact. Our hubs at Factory Lisboa in Beato and ARTs Lisboa in Parque das Nações are where great tech gets built

• Learning & Knowledge Exchange Level up through regular events with internal and external speakers. We value curiosity, continuous learning, and open exchange – across teams, disciplines, and borders

• Flexible Work Setup Two office days a week, flexible hours, and modern spaces built for both deep focus and team collaboration – work the way that brings out your best

• Time Off & Wellbeing Enjoy 28 vacation days per year, an additional day off on your birthday, one volunteer day annually, and private health insurance that also covers your spouse and children free of charge

• Practical Everyday Benefits Get a yearly Coverflex allowance and a daily meal allowance to make everyday life a little easier

• SIXT Perks Get exclusive rates on all SIXT services, with special discounts extended to your family and friends. Because great perks are even better when you can share them

About us:

We are a globally leading mobility service provider with a revenue of €4.3 billion and around 9,000 employees worldwide. Our mobility platform ONE combines our products SIXT rent (car rental), SIXT share (car sharing), SIXT ride (taxi, ride, and chauffeur services), and SIXT+ (car subscription), giving our customers access to our fleet of 360,000 vehicles, the services of 4,000 cooperation partners, and around 5 million drivers worldwide. Together with our franchise partners, we are present in more than 100 countries at 2,000 rental stations. At SIXT, top-tier customer experience and outstanding customer service are our highest priorities. We believe in true entrepreneurship and long-term stability and align our corporate strategy with foresight. Get started with us and apply now!