Senior AI-Native Fullstack Engineer

LOCOFY PTE. LTD.; Singapore; Remote; SGD 80,000 - 120,000; Full time

Job summary

A leading startup in Singapore is seeking a Senior ML Engineer to revolutionize frontend development through AI. The role involves building innovative features and collaborating with a dynamic team to enhance the development experience. Bring your passion for AI and frontend technologies to drive the future of application development in a supportive and growth-oriented environment.

Qualifications

• 4+ years of frontend or full stack experience with production apps.
• Strong proficiency in JavaScript/TypeScript and React or similar.
• Hands-on experience turning design tools into live UIs.

Responsibilities

• Build core AI-powered features for UI/UX to code generation.
• Design and implement complex frontend systems from design tools.
• Collaborate cross-functionally with product designers and engineers.

Skills

JavaScript

TypeScript

React

Frontend Development

Full Stack Development

Responsive Design

AI/ML Workflows

Model Fine-Tuning

Tools

Figma

Sketch

Adobe XD

Job description

About Locofy.aiLocofy.ai is a fully remote (Singapore HQ) startup, building a low code development devtool platform to help accelerate developers & designers to launch their core web/mobile products 5-10x faster. Having raised $7.5M in seed funding from the likes of Northstar Ventures, Accel, January Capital, Golden-Gate Ventures, BoldCap and backed by founders of Dropbox, Ola, Lottiefiles, Hasura, Holistics, Wego, Paysense, GajiGesa, Ohmyhome, 1bstories, Cyber-Sierra, it launched its beta platform in January 2022.

We're young, but we've made some serious progress - our Product Hunt launch in July 2022 was really encouraging and our community feedback has been strong! We got #1 Product of the Day, Week and Month subsequently along with #1 Developer Tool and #1 Design Tool of the Day, Week and Month, and it's been a crazy ride ever since!After running Locofy.ai in free public beta for 3.5 years, Locofy.ai recently came out of beta with paid plans in September 2024 and very rapidly sold 1000+ subscriptions with 20 Enterprises in 2 weeks.

The founders have held CxO roles in Product & Technology at some of Asia’s top startups covering Gaming, Travel, Fintech, Healthtech and SaaS, and won multiple awards for their products globally. After years building these products, they’re now determined to build a devtools SaaS platform from South-East Asia to improve the lives of product & engineering teams globally!At the heart of everything, Locofy's mission is to build for builders i.e. developers, designers & product managers.

As builders ourselves, we want to allow anyone with any idea to be able to build world-class products with lean teams, by empowering their teams with digital steroids to move faster!We recently launched our foundational large design models (built in house) and are looking to expand them with a Senior ML Engineer who is passionate about this problem. More details : https://static.locofy.ai/Locofy.ai%20Large%20Design%20Models%20Whitepaper.pdf

Reports To

CTO & Co-founder

Job Location

Singapore / Remote

Employment Type

Full-time

Overview

Are you a frontend engineer who’s not just riding the AI wave but building the surfboard? We’re on a mission to automate frontend development and design-to-code workflows using cutting-edge AI. If you’ve built complex web or mobile apps, lived in design tools, and now find yourself fine-tuning LLMs, chaining prompts, or even experimenting with custom models—this is your calling. This isn’t your average frontend role. It’s an opportunity to pioneer how AI will reshape the future of application development. If you’ve got code in your veins and AI in your brain—let’s build the future together.You’ll be joining a high-impact, product-driven engineering team where frontend expertise meets AI. The ideal candidate is a full stack engineer with strong frontend roots and deep curiosity in the emerging AI developer stack—prompt engineering, model building ground up and fine-tuning, embeddings, agents, and more. This is a rare opportunity to redefine how frontend development is done.

Key Responsibilities

• Build core AI-powered features that automate UI/UX to code generation for web and mobile apps
• Design and implement complex frontend systems, with pixel-perfect precision, from Figma or other design tools
• Work with LLMs, fine-tuning pipelines, and embeddings to enable context-aware code generation
• Develop internal tools and APIs that connect the AI layer with real-world frontend frameworks like React, Next.js, Flutter, etc.
• Collaborate cross-functionally with product designers, AI researchers, and fellow engineers to build magic
• Contribute to building and evolving the AI dev stack (prompt orchestration, context management, multi-modal input handling, etc.)
  

Required Skills

• 4+ years of frontend or full stack experience building production-grade web/mobile apps in atleast one of the following : React / Vue / Angular / Nextjs / Flutter / Kotlin / react native / Swift
• Strong proficiency in JavaScript/TypeScript, React (or similar frameworks), and responsive design
• Hands-on experience with design tools like Figma, Sketch, Penpot or Adobe XD, and turning them into live UIs
• Exposure to AI/ML tools and workflows — building models ground up or fine tuning them, prompt engineering, OpenAI/Anthropic APIs, LangChain, LlamaIndex, etc.
• Experience with LLM fine-tuning (LoRA, QLoRA, etc.), embeddings, LLM APIs, and vector databases like FAISS or Pinecone
• Solid understanding of backend fundamentals (Node.js, Express, Python APIs, or similar)
• Passionate about developer experience and accelerating how software is built
  

Nice to Have

• Experience building AI coding tools or internal dev automation platforms
• Worked on projects involving agents, RAG pipelines, or custom model training
• Contributions to open source projects in the AI or devtools space
• Familiarity with mobile frontend stacks like React Native or Flutter