Senior Backend Engineer (Python), Delivery Promise

<h3>Company Description</h3><p>Wolt is a Helsinki-based technology company that provides an online platform for consumers, merchants and couriers. It connects people looking to order food and other goods with people interested in selling and delivering them. To enable this, Wolt develops a wide range of technologies from local logistics to retail software and financial solutions – as well as operating its own grocery stores under the Wolt Market brand. Wolt’s products include Wolt+ (subscription service for customers), Wolt for Work (meal benefits and office deliveries for companies), Wolt Drive (fast last-mile deliveries for merchants) and Wolt Self-Delivery (service for merchant partners with their own delivery staff). Wolt’s mission is to make cities better by empowering and growing local communities. Wolt was founded in 2014 and joined forces with DoorDash in 2022. DoorDash operates in 29 countries today, 25 of which are with the Wolt product and brand.</p><p><strong>Working in Product Development at Wolt</strong></p><p>At Wolt, we’re about getting things done. You’ll probably enjoy it here if you like taking ownership, developing yourself and being around friendly, humble and ambitious people. </p><p>The behind the scenes of Wolt is run by an awesome bunch of over 700+ planners, builders, designers and data crunchers. We call ourselves Product+, as we’re the very core of Wolt’s products, tools and platforms. To build our products, we work in over 60  cross-functional, independent and autonomous teams. Teams are made up of a mix of talented individuals: engineers, designers, data scientists, analysts, and product leads. Each team takes ownership for solving customer problems in the best possible way.</p><p><strong>Our Commitment to Diversity, Equity &amp; Inclusion</strong></p><p>We want to have all sorts of people in our team – people like you and me, and people different from you and me. To be able to work with diverse teammates – when it comes to gender, age, ethnicity, life background, sexual orientation, political views, religion, or any other personal trait – we consciously aim to offer equal opportunity for everyone to work with us. This is because we believe diverse teams make the most thought-through decisions and build things in the most inclusive way.</p><p>Join us today to build Wolt together.</p><p>#LI-NM3</p><h3>Job Description</h3><p>We are looking for an experienced Senior Software Engineer who can develop production-level microservices in Python to join our Delivery Promise team in Logistics. </p><p>Delivery Promise is a cross functional team consisting of software engineers, applied scientists and product, design, and analytics folks. Our team works on developing and deploying machine learning models at scale for estimating different parts of the delivery journey that make up the delivery promise we make to our consumers and merchants as well as on designing and running experiments to evaluate their performance. The team is at the forefront of multiple cross group initiatives across Wolt in providing new and flexible ways of delivery to offer better selection and affordability to our customers.</p><p>This role is quite a special one because you will be a key player in solving complex problems related to our delivery estimates in Logistics, ensuring our ML services are performant and available at scale, and that we continuously run multiple consumer-facing A/B experiments as well as randomized Logistics experiments.</p><p>Delivery Promise services reside at the intersection between our core Logistics, Consumer, and Merchant platforms offering a diverse set of interesting challenges across multiple domains in Wolt. You will have great potential to make a significant impact by tackling complex problems and building new services and solutions that bring our customer experience and operations to the next level.</p><p>📍This role can be based in one of our tech hubs in Helsinki, Berlin, or Stockholm. Read more about our hybrid and remote setup <a href="https://careers.wolt.com/en/blog/tech/product-hybrid-work">here</a>. If you live outside of these countries - don't worry! We provide relocation support to help you make your way to Finland, Germany, or Sweden.</p><h3>Qualifications</h3><p>You might be the one if you are an engineer with experience designing and building top-class software and production-level microservices with expertise &amp; enthusiasm towards working with Python from the get-go and willingness to learn other modern languages such as Kotlin as well if needed. </p><p>We mostly work with Python (Flask &amp; FastAPI), MongoDB, PostgreSQL, Kafka, Redis, and appreciate it if you understand what it takes to build and operate scalable software services in production. Our massive backend software is powered with Kubernetes in AWS so proficiency in these platforms or similar and cloud infrastructure is a huge plus. </p><p>But what truly sets you apart is your ability to tackle big c