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Contract: Senior FastAPI Backend Engineer

✨ About us ✨

Photoroom was launched in 2020 after being accepted into Y Combinator and has become the world's most popular AI photo editor over the past four years. Our mission is clear: to create the best visuals for your commerce.


Photoroom puts the power of great images into more people's hands through our powerful and innovative features, from our best-in-the-world background remover to our generative AI model and tools: AI Images, AI Backgrounds and Shadows, AI Expand, and many more.


Processing over 5 billion images a year and downloaded over 200 million times, Photoroom is now the world's #1 AI photo-editing app, available across mobile, web, and via an API in over 180 countries.


We are at an exciting stage of our journey. Having successfully raised our Series B, we aim at sustaining 80% YoY growth.


Photoroom is a profitable, remote-friendly company headquartered in Paris with a global team of over 80 world-class deep learning, product, and marketing experts with backgrounds at the world's best companies. We are a diverse team of entrepreneurs building for entrepreneurs.

TL;DR

Who: We are looking for a FastAPI contractor/freelancer, expert in async Python to help us add new AI features in Photoroom.

Project: 6 months, renewable. You will build and enhance AI features, improve private API speed, and integrate multiple services to deliver high-quality images to our users

Day rate: €500—€800*

Location: remotely from anywhere in Europe

*We can go higher for outstanding profiles and adapt to the cost of living if it is higher than in Paris.

About the project

  • You’ll collaborate with the AI Tools squad implement and improve AI features in the Photoroom app (Logo maker, AI Images and other features available on the homepage of the app)

  • You’ll design and architect new features, chaining a mix of internal and external services to generate breathtaking images for our users

  • You’ll monitor and scale the growing load on the FastAPI service, leveraging Datadog to find optimizations and bottlenecks or implementing smart caching of pipeline steps

About you

  • You have experience designing and updating internal REST APIs, collaborating with other teams to gather their requirements and monitoring and improving the performance of existing services, ideally with Datadog.

  • You have work experience with FastAPI or a similar async Python http framework (has to be async).

  • You have experience with integration testing in a large Python project and wiring multiple external services or APIs together reliably

  • You have worked in a fast-paced startup in the past

  • Bonus: You have experience with image libraries in Python (Pillow, OpenCV)

  • Bonus: you have worked with Server Side Events

If you think you have what it takes but don't meet every single point above, please still apply. We'd love to chat and see if you could be a great fit.

🌈 Diversity, Equity, Inclusion and Belonging

We are committed to enabling everyone to feel included and valued at the workplace. We believe both the company and its culture are strongest when composed of diverse experiences and backgrounds.

That's why:

- We have flexible working hours

- We trust people to work remotely

- We extended the length of the parental leave

All qualified applicants will receive consideration for employment without regard to age, color, family, gender identity, marital status, national origin, physical or mental disability, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable laws.

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CEO of Photoroom
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Matthieu Rouif
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What You Should Know About Contract: Senior FastAPI Backend Engineer, Photoroom

Are you a passionate engineer ready to tackle exciting challenges? Photoroom is on the lookout for a Contract: Senior FastAPI Backend Engineer to join our vibrant team! Photoroom, the world’s leading AI photo-editing app, is trusted by millions to create stunning visuals for commerce. With our powerful features like the background remover and AI-generated images, you will play a pivotal role in shaping the future of our platform. As a crucial part of the AI Tools squad, you will work on enhancing existing AI features and designing new ones, seamlessly integrating various services to deliver top-notch images to our users. You'll utilize your expertise in async Python and FastAPI to enhance the speed of our private API and monitor its performance as we scale. With over 5 billion images processed annually, the impact of your work here will be massive. Plus, the work is fully remote, so you can contribute from anywhere in Europe! With a competitive day rate ranging from €500 to €800 (or even more for exceptional candidates), this six-month renewable contract offers both flexibility and a great work-life balance. At Photoroom, we believe in diversity and inclusion, fostering an environment where everyone feels valued. If you're ready to innovate and be part of a thrilling journey, come be a superstar with us!

Frequently Asked Questions (FAQs) for Contract: Senior FastAPI Backend Engineer Role at Photoroom
What are the responsibilities of the Contract: Senior FastAPI Backend Engineer at Photoroom?

As the Contract: Senior FastAPI Backend Engineer at Photoroom, your responsibilities will involve designing and enhancing AI features, integrating multiple external services, and improving the performance of our private API. You'll collaborate with the AI Tools squad to create exceptional visuals and utilize tools like Datadog for monitoring and scaling the FastAPI service.

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What qualifications do I need to apply for the Contract: Senior FastAPI Backend Engineer position at Photoroom?

To apply for the Contract: Senior FastAPI Backend Engineer position at Photoroom, you should have experience with FastAPI or a similar async Python framework, as well as expertise in designing REST APIs and performance optimization. Familiarity with image libraries like Pillow or OpenCV is a bonus, though not mandatory.

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How does the remote work policy work for the Contract: Senior FastAPI Backend Engineer at Photoroom?

Photoroom embraces a remote-friendly work culture, allowing the Contract: Senior FastAPI Backend Engineer to work from anywhere in Europe. We trust our team to maintain a work-life balance and offer flexible working hours to fit your schedule.

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What kind of projects will I work on as a Contract: Senior FastAPI Backend Engineer at Photoroom?

In the role of Contract: Senior FastAPI Backend Engineer at Photoroom, you'll work on exciting projects that include rolling out new AI features, improving existing functionalities within the Photoroom app, and optimizing the performance of our services as we grow rapidly.

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What is the salary range for the Contract: Senior FastAPI Backend Engineer position at Photoroom?

The day rate for the Contract: Senior FastAPI Backend Engineer at Photoroom ranges from €500 to €800, with potential for higher compensation for outstanding candidates. We also consider the cost of living adjustments depending on your location.

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Common Interview Questions for Contract: Senior FastAPI Backend Engineer
Can you describe your experience with FastAPI?

When answering this question, highlight specific projects where you've used FastAPI, focusing on the features you implemented. Explain how you leveraged its capabilities to build efficient APIs and any performance improvements you achieved.

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What strategies do you use for optimizing API performance?

Discuss your experience with caching strategies, load testing, and performance monitoring tools like Datadog. Provide examples of how you've successfully identified bottlenecks and made improvements in past projects.

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Tell us about a challenging project you handled in a fast-paced startup environment.

Share a specific example that illustrates your adaptability and problem-solving skills. Emphasize your role in the project, the challenges faced, and the outcome, reflecting your ability to thrive in dynamic settings.

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How do you approach designing and integrating new features?

Outline your design thinking process, including gathering requirements from stakeholders, creating prototypes, and testing integrations. Mention how you ensure that new features align with the overall architecture of the system.

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What experience do you have with image libraries in Python?

Discuss any projects where you've utilized libraries like Pillow or OpenCV. Highlight specific functionalities you implemented, such as image processing or manipulation, and how they contributed to the project outcomes.

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Can you explain the importance of collaboration when developing APIs?

Emphasize the critical nature of collaboration in understanding requirements, reducing silos, and improving overall API usability. Discuss experiences where effective teamwork led to better API design or functionality.

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How do you handle failures in your services?

Talk about your strategies for anticipating issues, ensuring proper logging, and using monitoring tools to quickly identify and resolve problems. Provide an incident example where you successfully recovered from a service failure.

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What is your experience with asynchronous programming in Python?

Describe your familiarity with async programming patterns and libraries in Python, such as asyncio. Illustrate your experience by discussing specific use cases where asynchronous programming led to performance improvements.

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How do you ensure the security of the APIs you develop?

Explain the security practices you follow, such as validating inputs, securing endpoints, and implementing proper authentication and authorization. Share any experiences where you addressed security vulnerabilities.

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What are the key metrics you track to ensure API performance?

Identify the metrics you believe are essential, such as response times, error rates, and throughput. Discuss how you leverage tools like Datadog to monitor these metrics and make data-driven decisions for improvements.

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To put the power of great images into more people's hands.

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DATE POSTED
March 12, 2025

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