Posted Feb 11, 2026

Backend Engineer (All Levels)

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Are you looking To make meaningful changes at the fastest-growing tech company in Japan? For a fair, highly flexible, inclusive working environment where anyone, regardless of their background, can make an impact? To build the next bold idea in customer acquisition and revenue growth through conversational commerce technology For a place where things are not just fast - but they happen now? We Are Zeals - “Designing conversations. Driving conversions.” Zeals is not another chatbot. Our automated chat solution and conversational technology change how consumers purchase or act online. Zeals converts customers who appear "unengaged" to become "valuable" through designed chat on Messaging Apps. Using AI-powered, human-designed conversation flows across chat platforms, Zeals enables brands to build personalized, automated conversations with their consumers and develop a deeper understanding of their preferences while creating a delightful, seamless shopping experience. Our last 3 years have been phenomenal. We have captured the heart of many businesses in Japan, with over 480 enterprises relying on our chat commerce offering to boost their mobile business. The goal is simple: to “revolutionize hospitality on the Internet” by unlocking digital customer service experiences that were limited to physical stores previously. Just Getting Started… With more than 480 enterprise companies worldwide already utilizing our product, we are perfectly poised to seize market share and fuel exponential growth in the US market, with an eye on global expansion. Investors have taken note of our potential, leading us to recently secure nearly $40 million in funding, backed by Salesforce Ventures. As a Backend Engineer As a Backend Engineer, you will be a key player in our engineering team, responsible for designing, building, and maintaining our backend systems and infrastructure. You will work on developing robust APIs, optimizing server performance, and ensuring seamless integration with Frontend applications. Your work will ensure the smooth operation and scalability of our systems, supporting the needs of various stakeholders and enabling advanced functionalities. Your Typical Day With Us Development with a focus on Clean Architecture of new services in Golang, using REST and gRPC interfaces Migration of interfaces from our legacy system as applicable (written in Python and Ruby). Design and implement features aligned with DDD architecture while documenting API specifications and data flow. Discover and triage issues with performance, reliability, maintainability, and extensibility. Collaborating with cross-functional teams to design, develop, and implement scalable solution Depending on the team, participation in an on-call rotation with additional compensation might be required. What You’ll Need Proficiency in development flow based on git and GitHub 4+ years of experience (8+ for higher levels) in Software Engineering or a similar role, with preferably experience in Golang Strong sense of testing, including unit tests and integration tests Ability to communicate recommendations for improvements on current systems, processes, and services as needed Exhibit a strong ability to adapt in a dynamic and ever-changing environment Ability to solve problems, especially to identify the source of the problem, and create and test solutions Experience with Elasticsearch, including setting up, configuring, and maintaining Elasticsearch clusters Proven team-leading experience with the ability to mentor and guide team members What Makes You Stand Out Working knowledge of Docker, Kubernetes, and Clean Architecture Working knowledge of gRPC and RESTful API Working knowledge of RDB and SQL Experience in Google Cloud Platform Experience in Continuous Integration tools like CircleCI Experience in issue management systems like Jira Japanese communication skills Experience in development using Python, Ruby, NodeJS Experience in using tracing and metrics in deriving performance optimizations and troubleshooting Don’t just take our word for it Zeals has received the LinkedIn Top Startups award twice in a row. We believe this is a testament to our growth and our ability to attract great talents–who could potentially be your colleague! Our Tech Stack Backend Languages: Go, Python, Elixir Frontend Languages: HTML, CSS, JavaScript (TypeScript, React.js, Recoil, Zod, Tanstack, etc) Mobile Languages: None Infrastructure: Google Cloud Platform, GCP Pub/Sub, Kubernetes, MongoDB, MySQL, Postgres, BigQuery, Elasticsearch, Qdrant Configuration management tool: Terraform CI/CD: Github Actions, ArgoCD, CircleCI Monitoring: Grafana, GCP Cloud Monitoring, GCP Logging, GCP Cloud Trace, Opsgenie Data: BigQuery, Parquet, Spark, Scala, Python, dbt Knowledge Tools: Confluence Other: GitHub / Slack / Jira Process: Scrum Ready to roll up our sleeves We're obsessed with bringing hospitality to everyone – whether it's our customers or you! You’re an individual with unique needs, and while we may not have ping-pong tables or all-you-can-drink espresso bars to offer, we promise you a once-in-a-lifetime experience and co-workers you’ll be proud to brag about to your friends, family, or anyone you meet the next time you go out! As an employer, we're ready to roll up our sleeves and change the status quo if it means making your experience better. Salary Range : competitive Performance review: twice a year Holidays: 10 days of annual leave in the first year, weekends off, national holidays, summer and winter breaks, and 5 refreshment leave days per year. Visa support: We sponsor visas for the right candidates. Flexible working: Highly flexible, remote-first organization (in Japan), Interim work from overseas Housing allowance (within 1.5KM away from office) Club activity allowance Team building allowance and Lunch allowance Zeals Bar (bi-monthly free flow beer party) Originally posted on Himalayas