About this role
Full Time Senior Senior Full Stack Engineer (SSE /ATL) - Enterprise & AI Focus in enterprise at 99x in Colombo, Sri Lanka. Apply directly through the link below.
At a glance
- Work mode
- Office
- Employment
- Full Time
- Location
- Colombo, Sri Lanka
- Experience
- Senior · 3+ years
Core stack
- Documentation
- Architecture
- Supply Chain
- Stakeholder
- TypeScript
- Express.js
- PostgreSQL
- Innovation
- REST API
- Security
- Next.js
- Node.js
- FastAPI
- MongoDB
- Python
- NestJS
- Lambda
- Docker
- Design
- React
- CI/CD
- SOLID
- Java
- LLMs
- AWS
- EC2
- RDS
- S3
Quick answers
What skills are required?
Documentation, Architecture, Supply Chain, Stakeholder, TypeScript, Express.js, PostgreSQL, Innovation, REST API, Security, and more.
99x is hiring for this role. Visit career page
Colombo, Sri Lanka
We are seeking an experienced Senior Full Stack Engineer (SSE / ATL) to design, build, and scale enterprise-grade applications with a strong focus on modern web technologies and AI-driven solutions.
Key Responsibilities
- Develop and maintain scalable full-stack applications with complex business logic and high security standards
- Design and implement modern frontend solutions using React/Next.js with TypeScript
- Build robust backend services using Node.js and Express.js
- Develop and integrate Agentic AI solutions, including autonomous agents and multi-step workflows
- Architect modular, decoupled systems with seamless frontend-backend integration
- Design and optimize databases (PostgreSQL, MongoDB)
- Ensure code quality through unit and end-to-end (E2E) testing
- Collaborate on system architecture, technical strategy, and solution design
Required Skills & Experience
- Proven experience in enterprise-level full-stack development
- 3+ years of experience in React/Next.js, TypeScript, and Node.js
- Hands-on experience with Agentic AI development
- Solid understanding of software architecture and design principles
- Experience with REST API design, security, and documentation
- Proficiency in AWS services (EC2, S3, Lambda, RDS)
- Familiarity with DevOps practices (CI/CD, Docker, cloud deployments)
- Strong problem-solving and communication skills
Nice to Have
- Experience with LLMs and AI system integration
- Knowledge of NestJS, Python, and FastAPI
- Background in .NET or Java (enterprise environments)
- Exposure to Manufacturing or Supply Chain domains
What We're Looking For
- Self-driven, proactive problem solver
- Ability to rapidly prototype and validate ideas
- Strong presentation and stakeholder communication skills
- Passion for innovation and staying current with emerging technologies
Job details
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