Senior Java Developer

Senior Backend Engineer

Ho Chi Minh, Ha Noi - Viet Nam

Product

Design, build, and operate backend services that power a leading B2B SaaS platform for the construction industry. Design clean, maintainable, and extensible software architecture. Identify and resolve performance bottlenecks (query optimization, caching, async processing). Drive software quality through automated testing, code reviews, observability, and CI/CD practices. Review and validate AI-generated code to ensure maintainability, correctness, and security. Mentor engineers and raise the team's engineering bar.#Development environment: Backend: Ruby (on Rails), Golang, Amazon Aurora (MySQL), DynamoDB FrontEnd: Nuxt.js, Vue.js, Next.js, ReactJS Mobile App: Kotlin, Swift, Flutter Deploy/ Build: AWS Amplify, CodePipeline, CodeBuild, CircleCI, GitHub Actions Others: Swagger, Docker, Figma, Confluence, JIRA, esa, gRPC Infrastructure: Helm, Terraform Automation test: Autify, Magicpod

Negotiation

Backend Engineer

Ho Chi Minh - Viet Nam

Product

• Typescript
• NodeJS
• Python
• AI

Build the core gateway: a unified, OpenAI-compatible API in front of multiple providers (OpenAI, Anthropic, Google, plus self-hosted and OSS models). Own provider routing and reliability: load balancing, automatic failover, and cost and latency-aware routing. Build billing and metering that is correct, not approximate: per-request token accounting, usage ledgers, cost attribution per team, user, and key, budgets, and spend limits. Ship org controls: API key management, per-team and per-user quotas, rate limiting, and RBAC. Handle streaming and performance: low-overhead proxying, streaming responses, connection handling, and caching where it helps. Contribute to the Jan Agent and connect it to the router: route its model and tool calls through the gateway, and make agent traffic first-class in metering, controls, and observability. Make deliberate speed-versus-correctness calls: move fast where iteration is cheap, refuse to cut corners where a bug means a bad charge or a leaked key, and pay down debt on your own initiative.

Negotiation

Senior Business Analyst

Ho Chi Minh - Viet Nam

Product

• Business Analyst

Act as a bridge between business teams and development/system teams Conduct workshops, interviews, and requirement sessions Analyze and document business requirements Create and maintain comprehensive Business Analysis Documentation Collaborate with UX/UI, development, and QA teams Support translation of business requirements into high-level functional specifications Work on projects related to stocks, bonds, derivatives, fund, and settlement processes Analyze and support enhancements for broker trading systems Collaborate with operation and business teams to solve issues related to trading functions Use AI tools to draft and refine requirement documents, user stories, and test cases Manage and track requirements throughout the project lifecycle Work closely with development and QA/testing teams Contribute to designing and reviewing test conditions Provide guidance and on-the-job support to junior BAs or new team members Share domain knowledge and contribute to internal knowledge bases and reusable BA templates

Negotiation