Backend Engineer, Staff Level
Zeals
No Japanese RequiredHybridBackend
Tokyo
Hybrid • Full-time
GoPython
Accepts Overseas Applications
Language Requirements English: Business Level
Tech Stack
GoPython
Description
What You’ll Do
- Drive architecture and design of complex, distributed backend systems with a focus on scalability, reliability, and performance
- Lead initiatives to modernize legacy systems and migrate to robust, decoupled services using Golang, gRPC, and REST
- Own high-stakes technical decisions, balancing trade-offs and setting standards for software design across teams
- Ensure best practices in clean code, DDD, testing, observability, and documentation are deeply embedded in the development lifecycle
- Collaborate with engineering leadership, product managers, and stakeholders to align backend capabilities with business priorities
- Foster a culture of technical excellence through mentorship, knowledge sharing, and collaborative problem solving
- When required, participate in the on-call rotation and act as a technical escalation point for critical incidents
What You’ll Need
- Proficiency in development flow based on git and GitHub
- 8+ years of experience 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
- 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
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
Posted: 2026/01/03
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Company Information
Zeals
101-500 employees