Senior Full-Stack Engineer

KRIS INFOTECH PTE. LTD.; Singapore; On-site; SGD 90,000 - 150,000; Full time

Job summary

KRIS INFOTECH PTE. LTD. is seeking a senior full-stack engineer to architect and implement intuitive interfaces for campaign planning and timeline visualization while building scalable backend APIs in Node.js and Python.

The role requires AWS deployment, security and authentication with JWT/OAuth2, and a strong focus on code quality and observability. You will lead CI/CD efforts with Jenkins, manage artifacts with Artifactory, uphold SonarQube standards, and collaborate across teams to deliver

Qualifications

• 5+ years of hands-on experience building production-grade web applications using React and backend APIs.

Responsibilities

• Architect and implement intuitive user interfaces for campaign planning workflows and analytics.
• Design, build, and maintain scalable backend REST/GraphQL APIs and microservices.
• Deploy and manage applications in AWS cloud environments.
• Lead peer code reviews and enforce quality gates (Sonar, Xray).
• Plan infrastructure capacity, scaling policies, and SSL renewals.
• Collaborate with cross-functional teams to translate requirements into deliverables.
• Establish CI/CD pipelines (Jenkins) and maintain artifact management.
• Maintain monitoring via Datadog, Dynatrace, and Splunk and ensure reliable logging.

Skills

Strong problem-solving

Independent worker

Collaborative team player

Tools

React

Node.js

AWS

PostgreSQL

REST/GraphQL

Docker

Jenkins

Datadog

Dynatrace

Splunk

JFrog Artifactory

JFrog Xray

Job description

Job Description

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, Python

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 adherence to Sonar quality gates and JFrog Xray security scanning thresholds.

Plan and manage infrastructure capacity, scaling policies, and SSL certificate renewals.

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 environments.

Maintain structured logging and ensure log pipelines are operational in all deployed environments.

Review and act on application metrics, performance trends, and error reports to proactively address issues before they impact users.

Requirements

Technical 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.

Soft Skills & General Requirements

• Strong self-starter capable of working independently with minimal supervision.
• Collaborative mindset and active team player who thrives in cross-functional environments.
• Excellent problem-solving skills and a proactive approach to technical ownership.