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Lead Fullstack Engineer

6 000 – 11 500 $
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Full time6+ yearsOn-siteSingapore

Location

FUSIONOPOLIS WAY, CONNEXIS

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About this job

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

Market insight

82% above median
4 800 $

Based on 75 102 offers with salary for this country

Full salary breakdown

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The employer lists 6 000 – 11 500 $ for this role at VIRTUOS HOLDINGS PTE. LTD. in Singapore. For comparison, the local market median is about 4 800 $ based on 75 102 similar offers.

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