Senior Full-Stack Engineer (3 - 5 years exp)

Kris Infotech : Technology & Talent - Synced; Singapore; On-site; SGD 140,000 - 210,000; Full time

Job summary

Kris Infotech : Technology & Talent - Synced seeks a Senior Full-Stack Developer to lead the core Campaign Planning platform. You will craft campaign interfaces in React, design robust Node.js APIs, and model data in PostgreSQL hosted on AWS.

Responsibilities include building scalable REST/GraphQL services, securing apps with JWT/OAuth2, optimizing queries, and deploying on AWS. You will mentor peers, enforce quality gates, and collaborate with cross-functional teams on delivery.

Qualifications

• 5+ years of hands-on experience building production-grade web applications using React.
• 5+ years of backend engineering experience developing scalable APIs using Node.js.
• Experience with AWS services including Lambda, ALB, CloudFront, DynamoDB, S3, ElastiCache (Redis), RDS (MySQL), KMS, Secrets Manager, SSM, EC2, ECS/EKS and IAM
• Experience building and maintaining Jenkins CI/CD pipelines with multi-branch strategies, artifact management, and automated code quality gates
• 5+ years of experience working with PostgreSQL or equivalent (query optimization, schema design, index management).
• Strong understanding of web standards, API design (RESTful/GraphQL), containerization (Docker), and automated testing.

Responsibilities

• Architect and implement intuitive user interfaces for campaign planning workflows, timeline visualization, and asset management using React.
• Design, build, and maintain scalable backend REST/GraphQL APIs and microservices using Node.js.
• Security and Authentication: JWT/OAuth2 experience.
• Optimize database queries, data schemas, and state management for high-throughput campaign operations.
• Deploy and support applications within an AWS cloud environment.
• Lead peer code reviews and enforce Sonar quality gates and JFrog Xray security scanning thresholds.
• Plan and manage infrastructure capacity, scaling policies, and SSL certificate renewal.
• Collaborate closely with cross-functional teams to translate campaign requirements into reliable technical deliverables.
• AI & ML experience (good to have): Claude Code, OpenAI Codex, Cursor, GitHub Copilot, Agentic AI, MCP, AWS Bedrock, SageMaker, Nova Pro, TensorFlow, Scikit-learn, LangChain, LangGraph, RAG, Document Intelligence (OCR, Textract), Vector Search, Prompt Engineering, LLM Evaluation

Skills

React

Node.js

AWS

Docker

Testing

JWT/OAuth2

Tools

PostgreSQL

Jenkins

JFrog Artifactory

SonarQube

Datadog

Dynatrace

Splunk

Terraform

Job description

We are seeking a Senior Full-Stack Developer to lead the technical implementation of our core Campaign Planning platform. You will build high-impact campaign management interfaces, design robust APIs in Node.js, and architect scalable data models in PostgreSQL hosted on AWS.

Key Responsibilities

• Architect and implement intuitive user interfaces for campaign planning workflows, timeline visualization, and asset management using React.
• Design, build, and maintain scalable backend REST/GraphQL APIs and microservices using Node.js, Pytho
• Security and Authentication: JWT/OAuth2 experienc
• Optimize database queries, data schemas, and state management for high-throughput campaign operations
• Deploy and support applications within an AWS cloud environment
• Lead peer code reviews and enforce adherence to Sonar quality gates and JFrog Xray security scanning threshold
• Plan and manage infrastructure capacity, scaling policies, and SSL certificate renewal
• Collaborate closely with cross-functional teams to translate campaign requirements into reliable technical deliverables
• AI & ML experience (good to have): Claude Code, OpenAI Codex, Cursor, GitHub Copilot, Agentic AI, MCP, AWS Bedrock, SageMaker, Nova Pro, TensorFlow, Scikit-learn, LangChain, LangGraph, RAG, Document Intelligence (OCR, Textract), Vector Search, Prompt Engineering, LLM Evaluation

CI/CD & DevOps

• Own and maintain all Jenkins CI/CD pipelines
• Manage branch-based deployment flows across all environments
• Maintain artifact repository integrations with JFrog Artifactory and enforce Xray security policies
• Maintain SonarQube project configurations and enforce quality gate compliance across all repos

Monitoring & Observability

• Oversee application health monitoring using Datadog, Dynatrace, and Splunk integrations across all environment
• Maintain structured logging and ensure log pipelines are operational in all deployed environment
• Review and act on application metrics, performance trends, and error reports to proactively address issues before they impact users

Required Qualifications and experiences:

• 5+ years of hands-on experience building production-grade web applications using React.
• 5+ years of backend engineering experience developing scalable APIs using Node.js.
• Experience with AWS services including Lambda, ALB, CloudFront, DynamoDB, S3, ElastiCache (Redis), RDS (MySQL), KMS, Secrets Manager, SSM, EC2, ECS/EKS and IAM
• Experience building and maintaining Jenkins CI/CD pipelines with multi-branch strategies, artifact management, and automated code quality gates
• 5+ years of experience working with PostgreSQL or equivalent (query optimization, schema design, index management).
• Strong understanding of web standards, API design (RESTful/GraphQL), containerization (Docker), and automated testing.