About this role
Software Engineer, Backend - US AppEmployment Status: Full-timeWork Hours: Full Flextime (no core time) Office: RoppongiFor more details, see the Overview of Our Positions section on our Careers site.
About Mercari Circulate all forms of value to unleash the potential in all people
"What can I do to help society thrive with the finite resources we have?" The Mercari marketplace app was born in 2013 out of this thought by our founder Shintaro Yamada as he traveled the world. We believe that by circulating all forms of value, not just physical things and money, we can create opportunities for anyone to realize their dreams and contribute to society and the people around them. Mercari aims to use technology to connect people all over the world and create a world where anyone can unleash their potential. For more information about Mercari Group’s mission, see Mercari’s Culture Doc
Organization/Team MissionMercari Engineering Principles
Mercari Engineering Principles are a shared understanding that serves as the foundation of engineering beliefs and behavior at Mercari. The Engineering Principles are designed to complement the organizational identity (Mercari’s mission, values, and culture) from an engineering viewpoint.
These principles ultimately help us achieve Mercari’s mission by defining the ideal state we seek to realize in the long term.
Passion For The ProductGrow TogetherSolve Through MechanismsCollaborate OpenlyFor more details, please see the following link:
Engineering CultureSee here for more information about our mission and values.
Work Responsibilities Lead the development of complex backend features and services, such as payment processing and inventory management systemsDesign and implement scalable backend architectures and patterns, including microservices and event-driven systemsDrive technical decisions and best practices for backend development, including coding standards, performance budgets, and testing strategiesMentor and guide other engineers in backend development practices through code reviews and technical presentationsCollaborate with product and frontend teams to define technical requirements and feasibility of new featuresOptimize backend performance and scalability, focusing on database optimization, caching strategies, and load balancingContribute to backend platform technology and strategic roadmap decisions, including technology evaluation and technical debt reductionLead technical discussions and architectural reviews for major features and system changes Unique ChallengesBe a part of a small distributed team with oversight over Mercari US’s entire backend system, delivering value to millions of daily active customers across the US. Work in a globally distributed team, collaborating with teammates in both Tokyo and the US, to deliver impactful solutions across time zones and cultures.Be the voice of Mercari US for our group-wide shared platform components. QualificationsRequired Experience/SkillsDeep understanding of backend performance optimization techniquesStrong architectural and system design skillsExcellent mentoring and technical leadership abilitiesPreferred Experience/SkillsExpert knowledge of Go and PHP ecosystemsMySQLSpannerGoogle Cloud PlatformKubernetesExcellent knowledge of Agentic AI tools and workflowsLanguage English: Business level (CEFR B2 or higher) requiredJapanese: Basic (CEFR - A2) optional For details about CEFR, see here.
Learn More About Mercari GroupCareers site: https://careers.mercari.com/en/ Mercan: https://mercan.mercari.com/en/ Social media: X / Linkedin
Recruiting at MercariAt Mercari Group, we value empathizing with and embodying the mission and values of the Group and each company. To promote the creation of an organization that maximizes the total amount of value exhibited by all members, we would like to understand the experience and skills of each candidate as accurately as possible.
Recruiting cycle at Mercari Group
Application screeningSkill assessment: For engineering positions, you will be asked to complete a skill assessment on HackerRank or GitHub. For non-engineering positions, you may be asked to complete an assessment depending on the position. (The timing of the assessment may coincide with the interview process.)Interview: The number of interviews may vary depending on the position.Reference check: We will ask for online references around the timing of the final interview.Offer: Offers will be determined carefully in consideration of the final interview and the reference check. Learn more about our recruiting process here.
Equal Opportunity HiringHere at Mercari, we work to realize a world in which no one’s potential is limited by their background and everyone has the opportunity to freely create value. We also firmly believe that a mindset of Inclusion & Diversity is essential for us to achieve our mission.
This, of course, extends to our hiring practices as well. Mercari is committed to eliminating discrimination based on age, gender, sexual orientation, race, religion, physical disability, and other such factors so that anyone who shares our mission and values can join us, regardless of their background. For more details, please read our I&D statement.
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