Sign-on Bonus Senior Fullstack Developer - Agentic AI

Core duties include:

Frontend Development

• Develop and implement user interfaces using [protected info], [protected info], and modern front-end technologies
• Build responsive, accessible UIs with CSS and Material-UI
• Troubleshoot and resolve end-user issues and optimise automated processes

Backend Development

• Design, develop, and maintain robust backend APIs using [protected info] (NestJS)/Golang
• Build and maintain high-performance, high-throughput services with strict reliability requirements
• Design and maintain scalable microservices capable of handling high transaction volumes
• Ensure idempotency, consistency, and fault tolerance across processing flows
• Implement robust error handling, retry strategies, and reconciliation processes

AI-Augmented Development & Collaboration

• Use agentic AI tools (e.g., Claude Code, Cursor, GitHub Copilot) daily to accelerate development, automate code reviews, and improve code quality
• Design effective prompts, workflows, and context strategies to maximise output from AI coding agents
• Identify and implement opportunities to integrate AI agents into development workflows, CI/CD pipelines, and operational processes
• Collaborate with stakeholders to clarify project requirements and recommend improvements
• Conduct code reviews with a strong focus on performance, security, and reliability
• Prepare and maintain comprehensive technical documentation, including SRS and design documents
• Work closely with DevOps teams to improve observability, monitoring, and alerting.

Required skills:

• At least 5 years of proven experience in full-stack development. Advanced proficiency in JavaScript/TypeScript (ES6+), [protected info], [protected info], [protected info], NestJS, or Golang.
• Strong expertise in designing and integrating RESTful APIs and socket protocols, with sound backend architecture and applied security practices (authentication, authorisation, input validation, secrets handling).
• Solid experience with relational databases (PostgreSQL, MySQL, SQL Server) and transactional data modelling, plus working experience with NoSQL databases such as MongoDB or DynamoDB.
• Practical understanding of timeouts, retries, circuit breakers, and idempotency; deep understanding of concurrency, asynchronous programming, and multithreading.
• Hands-on experience building and running services on AWS (Lambda and similar), GCP, or Azure, provisioned through Infrastructure-as-Code (Terraform, CloudFormation, or equivalent).
• Proven hands-on use of agentic AI coding tools (Claude Code, Cursor Agent, GitHub Copilot, or equivalent), not limited to chat-based AI use; able to design prompts, workflows, and context strategies that get reliable output from coding agents.
• Excellent communication with a strong command of English; demonstrated problem-solving, self-motivation, and effectiveness both independently and in a team.

Desirable skills:

• Experience with payment gateways, fintech, or financial systems; knowledge of AS2805, ISO 8583, ISO 20022, or equivalent message formats; knowledge of PCI DSS or payment security standards. Not required; we will train the right engineer on the domain.
• Strong understanding of Service-Oriented Architecture (SOA) and microservices.
• Handling peak traffic, failover, and disaster recovery; rate limiting, throttling, and traffic shaping; performance profiling and optimisation.

- Fully social insurance according to Vietnam Labor Law
- Full salary on probation
- 13th month salary and performance bonus
- Annual leave: 14 days/ year + 01 day off for birthday leave
- Performance review twice a year
- Annual health check and vaccination
- Premium Health Care Insurance (covering for spouse and children)
- Personal Learning & Career Development Program (15.6 millions VND/ year)
- Health Scheme Program
- Laptop provided (Macbook/Window)
- Free parking, coffee, snacks, etc
- Attractive career path
- Regular team dinners and team building activities
- International and friendly working environment.