VIRTUOS HOLDINGS PTE. LTD. Hiring! Full Time Lead Fullstack Engineer in West Region (Singapore), Earn up to SGD 6,000 - Ricebowl

ABOUT THE POSITION

We’re seeking a lead Full-Stack Engineer to lead a diverse team to design, implement, and optimize production-grade tools and applications that support video game asset pipelines and production workflows.

Responsibilities
Agent loop & harness engineering

• Own prompting strategy at scale: system prompt design, guardrails, mitigation of context poisoning and pollution, and management of hyperparameters (context window sizing, lost-in-the-middle effects, temperature, top-k).
• Design tool interfaces for agents: MCP servers, structured inputs/outputs for context, and sub-agent composition patterns.
• Champion best practices for typed-agent frameworks, with first-class observability and telemetry baked into every agent.
• Evaluate and integrate **local LLM** options where latency, cost, or data-residency requirements demand it.

Backend

• Design and build scalable backend services and secure RESTful APIs using Python (FastAPI or Flask).
• Model, query, and optimize data across relational and NoSQL databases; implement caching and messaging when needed.
• Enforce authentication/authorization, input validation, and robust error handling.

Quality, performance, and delivery

• Write comprehensive tests with tools such as pytest.
• Own performance tuning, troubleshooting, code reviews, and technical documentation.
• Set up and maintain CI/CD with Git and GitLab; use Docker for local development and deployment pipelines.

Collaboration and process

• Lead a group of engineers to deliver AI/Software project.Partner with UI/UX, backend, production, SRE, and IT stakeholders to deliver user-centric solutions.
• Contribute to architectural decisions and mentor junior engineers.
• Work within agile methodologies, continuously improving team practices. 

Qualifications

• 7+ years of professional experience building production applications as a full‑stack engineer.
• Strong hands-on expertise in Python (FastAPI or Flask), RESTful API design, and SQLAlchemy/Pydantic or similar tooling.
• Proficiency in Vue or React, including routing, state management (Vuex/Pinia or Redux), and component libraries.
• Proven experience working on public cloud like AWS/GCP
• Database proficiency with relational systems (PostgreSQL) and familiarity with NoSQL (MongoDB, Vector DB); experience with caching and message queues (Redis) is valued.
• Proven testing mindset and experience with automated test suites.
• Comfortable with Git, GitLab CI/CD, and Docker.
• Clear communication skills and experience collaborating with cross-functional teams.
• Nice to haveExperience with agent development frameworks (LangChain/LangGraph) is a plus.Certification: AWS Certified Solutions Architect – Associate