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Staff Back-end Developer - Ads

About Faire

Faire is an online wholesale marketplace built on the belief that the future is local — independent retailers around the globe are doing more revenue than Walmart and Amazon combined. At Faire, we're using the power of tech, data, and machine learning to connect this thriving community of entrepreneurs across the globe. Picture your favorite boutique in town — we help them discover the best products from around the world to sell in their stores. With the right tools and insights, we believe that we can level the playing field so that small businesses everywhere can compete with these big box and e-commerce giants.

By supporting the growth of independent businesses, Faire is driving positive economic impact in local communities, globally. We’re looking for smart, resourceful and passionate people to join us as we power the shop local movement. If you believe in community, come join ours.

About This Role

At Faire, we are building an advertising solution to help brands boost their visibility in the marketplace and acquire new customers. The Ads Engineering team is part of a small and fast-moving product development team. We own the ads delivery infrastructure, partner closely with Data Science to improve ads relevance and delivery efficiency, and collaborate with Search Infrastructure to improve the capability and performance of the core retrieval and ranking engine that powers both search and ads.

As a Staff Backend Developer on the Ads Engineering team, you will be responsible for developing the next iteration of ads delivery with improved retrieval speed, relevance and scale to 10x the current size.

You’re excited about this role because…

  • You’ll be able to work on a cutting edge large-scale information retrieval system

  • You’ll work with talented colleagues across Product, Strategy, Data Science and Engineering to create innovative solutions to business problems that require combining multiple disciplines

  • You’ll be laying the technical foundation for a fast-growing high-impact product

  • You enjoy learning and upleveling your team by sharing your knowledge


  • 3+ years of industry experience with search/ads retrieval infrastructure

    • Experience with common search platforms (e.g. Elasticsearch, Lucene, Solr, FAISS) or equivalent homegrown solutions with large-scale deployment

    • Experience with productionizing machine learning models into an online serving system

  • Experience in solving complex scaling and latency problems in high-volume online serving systems

  • Strong programming skills, including experience with the following

    • Kotlin, Java 16

    • JUnit, Hibernate, Guice, Jersey

    • HTTP, JSON, and Protocol Buffers

    • MySQL

  • Strong analytical skills and experience implementing data-driven decision making at project and team levels.

  • Strong communication skills and ability to collaborate across functions, teams and seniority levels.

  • Experience in developing strategy and roadmap, and in leading execution autonomously.

Faire’s flexible work model aims to meet the needs of our diverse employee community by making work more flexible, connected, and inclusive. Depending on the role and needs of the team, Faire employees have the flexibility to choose how they work–whether that’s mainly in the office, remotely, or a mix of both. 

Roles that list only a country in the location are eligible for fully remote work in that country or in- office work at a Faire office in that country, provided employees are located in the registered country/province/state. Roles with only a city location are eligible for in-office or hybrid office work in that city. Our talent team will work with candidates to determine what locations and roles are eligible for each option.

Applications for this position will be accepted for a minimum of 30 days from the posting date.

Why you’ll love working at Faire

  • We are entrepreneurs: Faire is being built for entrepreneurs, by entrepreneurs. We believe entrepreneurship is a calling and our mission is to empower entrepreneurs to chase their dreams. Every member of our team is taking part in the founding process.

  • We are using technology and data to level the playing field: We are leveraging the power of product innovation and machine learning to connect brands and boutiques from all over the world, building a growing community of more than 350,000 small business owners.

  • We build products our customers love: Everything we do is ultimately in the service of helping our customers grow their business because our goal is to grow the pie - not steal a piece from it. Running a small business is hard work, but using Faire makes it easy.

  • We are curious and resourceful: Inquisitive by default, we explore every possibility, test every assumption, and develop creative solutions to the challenges at hand. We lead with curiosity and data in our decision making, and reason from a first principles mentality.

Faire was founded in 2017 by a team of early product and engineering leads from Square. We’re backed by some of the top investors in retail and tech including: Y Combinator, Lightspeed Venture Partners, Forerunner Ventures, Khosla Ventures, Sequoia Capital, Founders Fund, and DST Global. We have headquarters in San Francisco and Kitchener-Waterloo, and a global employee presence across offices in Salt Lake City, Atlanta, Toronto, London, New York, LA, and Sao Paulo. To learn more about Faire and our customers, you can read more on our blog.

Faire provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, national origin, age, disability, genetics, sexual orientation, gender identity or gender expression.

Faire is committed to providing access, equal opportunity and reasonable accommodation for individuals with disabilities in employment, its services, programs, and activities. To request reasonable accommodation, please fill out our Accommodation Request Form (

This job is closed
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