Senior Full Stack Developer (Generative AI Specialist)

Halosis; Jakarta Utara; On-site; IDR 664.893.000 - 997.341.000; Full time

Job summary

A technology company in Jakarta Utara is looking for an experienced Senior Full Stack Developer with a focus on Generative AI. The successful candidate will design and develop AI-powered applications and APIs, lead technical efforts, and work closely with product teams. A minimum of 5 years of experience in full stack development, strong skills in PHP, Node.js, or Python, and experience with AI frameworks are essential for this role.

Qualifications

• Minimum 5 years of professional experience as a Full Stack Developer.
• Proven experience in AI or Generative AI development.
• Strong knowledge of RESTful APIs and microservices architecture.

Responsibilities

• Design and develop full stack applications integrating LLMs and Generative AI frameworks.
• Build scalable APIs and backend services using PHP Laravel, Node.js, or Python.
• Implement intelligent front-end interfaces using React, Next.js, or Vue.js.

Skills

PHP Laravel

Node.js

Python

Generative AI development

RESTful APIs

Microservices architecture

Cloud platforms (AWS, GCP, Azure)

Containerization (Docker/Kubernetes)

Problem-solving skills

Collaboration and communication abilities

Job description

Senior Full Stack Developer (Generative AI Specialist)

We’re looking for an experienced Senior Full Stack Developer with a strong background in Generative AI development to join our product engineering team.

You will help with the design and development of AI-powered applications and APIs, integrating them into Halosis’s core platform and helping shape the next generation of conversational and automation technologies.

This is a hands-on technical leadership role — perfect for someone who thrives at the intersection of AI innovation, scalable architecture, and real-world impact.

Design and develop full stack applications integrating LLMs (Large Language Models), NLP, and Generative AI frameworks

Build scalable APIs and backend services using PHP Laravel, Node.js, or Python (FastAPI/Flask)

Implement intelligent front-end interfaces using React, Next.js, or Vue.js

Collaborate with data and product teams to design, train, and deploy AI models for automation, chat, and content generation

Optimize performance, scalability, and security across the stack

Lead code reviews, provide technical mentorship, and uphold engineering best practices

Explore and adopt new Gen AI tools and frameworks (OpenAI, Anthropic, LangChain, Hugging Face, etc.)

Requirements:

• Minimum 5 years of professional experience as a Full Stack Developer
• Strong proficiency in PHP Laravel, Node.js, or Python
• Proven experience in AI or Generative AI development (OpenAI API, Hugging Face, LangChain, or similar frameworks)
• Strong knowledge of RESTful APIs, microservices architecture, and database design
• Experience with cloud platforms (AWS, GCP, Azure) and containerization (Docker/Kubernetes)
• Excellent problem-solving, analytical, and architectural skills
• Strong collaboration and communication abilities
• Experience developing AI chatbots, virtual assistants, or automation systems
• Knowledge of vector databases (Pinecone, Chroma, Weaviate)
• Familiarity with prompt engineering and fine-tuning LLMs
• Contributions to open-source AI projects