Let’s get started
By clicking ‘Next’, I agree to the Terms of Service
and Privacy Policy
Jobs / Job page
Senior Backend Engineer (Python), Delivery Promise  image - Rise Careers
Job details

Senior Backend Engineer (Python), Delivery Promise

Company Description

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.

Working in Product Development at Wolt

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. 

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.

Our Commitment to Diversity, Equity & Inclusion

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.

Join us today to build Wolt together.

#LI-NM3

Job Description

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. 

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.

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.

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.

📍This role can be based in one of our tech hubs in Helsinki, Berlin, or Stockholm. Read more about our hybrid and remote setup here. 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.

Qualifications

You might be the one if you are an engineer with experience designing and building top-class software and production-level microservices with expertise & enthusiasm towards working with Python from the get-go and willingness to learn other modern languages such as Kotlin as well if needed. 

We mostly work with Python (Flask & 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. 

But what truly sets you apart is your ability to tackle big challenges together, envision scalability and availability, and dare to question conventional decisions. We are looking for dedicated people who aim to write modern, testable and maintainable code, are detail oriented pragmatists with a positive attitude, don’t shy away from going outside of their tech comfort zone, and demonstrate curiosity and willingness to keep continuously learning.🌟

In addition to technical expertise, we expect you to be a product-oriented problem solver, a good communicator, willing to collaborate with people in- and outside of your own team, and keen to bring up issues in a constructive manner to the team and to Wolt at large. We work with high ownership in small teams where each team member works around the whole SW development life cycle. 

We value the unique perspectives and skills you bring to our adventure, and we're excited to see what you can achieve with us!👥🚀

Additional Information

The position will be filled as soon as we find the right person, so make sure to apply as soon as you realize you really, really want to join us!

The compensation will be a negotiable combination of monthly pay and DoorDash RSUs. The latter makes it exceptionally easy to be excited about our company growing and doing well, as you’ll own a piece of the pie.

For any further questions about the position, you can turn to Product+ Talent Acquisition Partner - Noora Markoff ([email protected]).

Wolt Glassdoor Company Review
3.7 Glassdoor star iconGlassdoor star iconGlassdoor star icon Glassdoor star icon Glassdoor star icon
Wolt DE&I Review
3.6 Glassdoor star iconGlassdoor star iconGlassdoor star icon Glassdoor star icon Glassdoor star icon
CEO of Wolt
Wolt CEO photo
Miki Kuusi
Approve of CEO

Average salary estimate

$75000 / YEARLY (est.)
min
max
$60000K
$90000K

If an employer mentions a salary or salary range on their job, we display it as an "Employer Estimate". If a job has no salary data, Rise displays an estimate if available.

What You Should Know About Senior Backend Engineer (Python), Delivery Promise , Wolt

Are you ready to make an impact in the logistics space as a Senior Backend Engineer (Python) at Wolt? Located in the vibrant city of Helsinki, you’ll be joining our Delivery Promise team, where innovation meets practicality. If you're passionate about developing scalable software and have a knack for creating production-level microservices in Python, you could be the perfect fit! Our team is a dynamic mix of software engineers, applied scientists, and product specialists, all dedicated to enhancing the delivery experience for customers and merchants alike. You’ll be diving into exciting projects that involve machine learning models, A/B experiments, and complex problem-solving related to logistics and delivery estimates. This role offers you the unique chance to shape the future of our customer operations, ensuring our services remain top-tier and efficient. Collaboration is key here at Wolt, and you’ll have plenty of opportunities to share ideas and tackle challenges collectively in a supportive, diverse environment. Our commitment to continuous learning means there’s always room for your personal and professional growth. Whether you're in Helsinki, Berlin, or Stockholm, or even considering relocating, we’re here to help you every step of the way. If you're seeking a position where your work directly contributes to a mission that empowers local communities, look no further—apply now to embark on this exciting journey with us at Wolt!

Frequently Asked Questions (FAQs) for Senior Backend Engineer (Python), Delivery Promise Role at Wolt
What are the primary responsibilities of a Senior Backend Engineer (Python) at Wolt?

As a Senior Backend Engineer (Python) at Wolt, you will be integral to our Delivery Promise team. Your primary responsibilities will include designing and building production-level microservices, developing machine learning models, running experiments to evaluate service performance, and collaborating with cross-functional teams to enhance our delivery offerings. Your contributions will play a pivotal role in improving customer experience across our logistics operations.

Join Rise to see the full answer
What qualifications are required for a Senior Backend Engineer (Python) at Wolt?

To qualify for the Senior Backend Engineer (Python) position at Wolt, you should possess extensive experience in software engineering, particularly in designing and building microservices using Python. Familiarity with modern languages such as Kotlin is a plus. Additionally, experience with cloud infrastructure, preferably AWS, and tools such as Kubernetes, PostgreSQL, Kafka, and MongoDB is highly valued. A passion for problem-solving and collaboration is essential.

Join Rise to see the full answer
How does Wolt support the professional growth of a Senior Backend Engineer (Python)?

Wolt is dedicated to fostering a culture of continuous learning and professional growth. As a Senior Backend Engineer (Python), you'll have access to various resources, including mentorship programs, skill-development workshops, and collaborative project opportunities. We encourage our engineers to explore new technologies and challenge themselves within the innovative landscape of logistics and delivery services.

Join Rise to see the full answer
What is the company culture like for a Senior Backend Engineer (Python) at Wolt?

Wolt embraces a positive, collaborative, and diverse company culture. As a Senior Backend Engineer (Python), you'll work alongside friendly, like-minded professionals who are ambitious and dedicated. Teamwork and ownership are emphasized here; you’ll have the chance to share your ideas openly and drive projects forward. We truly believe diverse teams lead to better decisions and innovative solutions.

Join Rise to see the full answer
What technologies will I work with as a Senior Backend Engineer (Python) at Wolt?

In your role as a Senior Backend Engineer (Python) at Wolt, you'll be primarily working with Python frameworks like Flask and FastAPI, alongside databases such as MongoDB and PostgreSQL. You’ll engage with cloud infrastructure primarily on AWS, leveraging Kubernetes for scalable service deployment. Familiarity with tools like Kafka and Redis will also be beneficial, ensuring you can fully contribute to our tech stack.

Join Rise to see the full answer
Common Interview Questions for Senior Backend Engineer (Python), Delivery Promise
Can you describe your experience with building microservices in Python?

When answering this question, highlight specific projects where you've developed microservices with Python. Discuss the frameworks you used, the challenges faced, how you ensured scalability and performance, and any testing methodologies you implemented to maintain code quality. This showcases your hands-on experience and technical expertise.

Join Rise to see the full answer
What strategies do you use for optimizing machine learning models?

Share your experience with evaluating model performance and the methodologies you've applied, such as cross-validation, hyperparameter tuning, and feature selection. Discuss the importance of A/B testing in your workflow and how it can inform adjustments to improve model accuracy in practical applications, such as delivery estimates.

Join Rise to see the full answer
How do you approach collaboration within cross-functional teams?

Emphasize the significance of communication and empathy in your collaborative efforts. Provide examples of how you've worked alongside product managers, designers, and data scientists to develop solutions and address challenges. Specific instances of resolving conflicts or incorporating diverse viewpoints can demonstrate your team-oriented mindset.

Join Rise to see the full answer
Describe a challenging technical problem you encountered and how you solved it.

When discussing this, detail the technical dilemma, the reasoning behind your approach, and the ultimate outcome. Highlight your problem-solving skills, resourcefulness, and ability to learn from experiences. It’s important to convey what you learned from the process, showing your commitment to continuous improvement.

Join Rise to see the full answer
What methods do you use for ensuring code quality and maintainability?

Discuss your practices for writing clean, testable code, such as following coding standards, conducting code reviews, and implementing automated testing. Mention how you leverage tools for continuous integration and deployment to maintain a high code quality throughout the development lifecycle.

Join Rise to see the full answer
How would you prioritize tasks in a fast-paced development environment?

Outline your approach to task prioritization, emphasizing the need for effective communication with stakeholders and your team. Explain how you assess urgency and impact, utilizing project management tools to track deliverables while remaining adaptable to changing priorities.

Join Rise to see the full answer
What experience do you have with AWS and Kubernetes?

Describe your hands-on experience with AWS services relevant to backend development, such as EC2, Lambda, and RDS. When discussing Kubernetes, provide specifics on how you've utilized it to manage containerized applications, including deployment strategies and scaling considerations.

Join Rise to see the full answer
How do you stay updated on the latest trends and technologies in software engineering?

Highlight your commitment to continuous learning by mentioning industry blogs you follow, online courses you take, and conferences you attend. Emphasize how you apply what you learn to your work, adapting new strategies and tools to improve your practice.

Join Rise to see the full answer
What is your experience with A/B testing in product development?

Explain your familiarity with A/B testing methodologies, including how you design experiments, define metrics for success, and analyze results. Provide examples of instances where A/B testing informed product decisions and led to measurable improvements in user experience.

Join Rise to see the full answer
How do you ensure a balance between performance and maintainability in the code you write?

Discuss your philosophy around trade-offs in software development. Explain how you approach performance optimization while maintaining clear documentation and testing. Providing concrete examples can illustrate your ability to find this balance effectively.

Join Rise to see the full answer
Similar Jobs
Photo of the Rise User
Wolt Remote Pohjoinen Rautatiekatu 21, Helsinki, Finland
Posted 4 days ago
Photo of the Rise User
Wolt Remote Solnavägen 3h, 113 63 Stockholm, Sweden
Posted 3 days ago
Photo of the Rise User
Posted 8 days ago
Photo of the Rise User
Posted 9 hours ago
Posted 7 hours ago
Photo of the Rise User
Posted 7 days ago
Photo of the Rise User
ServiceNow Remote Plots 9-13 B Touristic Area, 5th Settlement, Cairo, Egypt, Cairo, New Cairo, Egypt
Posted 9 days ago
Inclusive & Diverse
Mission Driven
Rise from Within
Diversity of Opinions
Work/Life Harmony
Empathetic
Feedback Forward
Take Risks
Collaboration over Competition
Medical Insurance
Dental Insurance
Vision Insurance
Mental Health Resources
Life insurance
Disability Insurance
Health Savings Account (HSA)
Flexible Spending Account (FSA)
Conferences Stipend
Paid Time-Off
Maternity Leave
Equity
Photo of the Rise User
BitGo Hybrid New York, United States
Posted 6 days ago
Photo of the Rise User
Expeditors Remote Edificio 200 Sobre la Radial Siquiares-Coyol, Alajuela, Costa Rica
Posted 10 days ago

Wolt makes it incredibly easy for you to discover and get what you want. Delivered to you – quickly, reliably and affordably. And by doing so, we make cities better places to live.

47 jobs
MATCH
Calculating your matching score...
FUNDING
SENIORITY LEVEL REQUIREMENT
TEAM SIZE
EMPLOYMENT TYPE
Full-time, hybrid
DATE POSTED
January 10, 2025

Subscribe to Rise newsletter

Risa star 🔮 Hi, I'm Risa! Your AI
Career Copilot
Want to see a list of jobs tailored to
you, just ask me below!