Senior Java Full Stack Developer (Lead)

Job Description

Job Description

Job Title: Senior Java Full Stack Developer (Lead)

Location: New York, NY
Work Mode: Onsite
Experience: 12 Years

Job Summary

We are seeking a hands-on Senior Java Full Stack Developer / Lead with strong expertise in building and scaling API-first, cloud-native platforms. The ideal candidate will have extensive experience in Java, Spring Boot, microservices, API integration, AWS, and modern front-end technologies, along with exposure to AI-assisted and AI-first development approaches.

The candidate will design and deliver secure, scalable, event-driven applications while collaborating with cross-functional teams to solve complex business problems.

Key Responsibilities

• Design, develop, and scale cloud-native applications using Java, Spring Boot, and microservices.

• Build REST APIs and enterprise integrations using API-first architecture and asynchronous messaging.

• Develop end-to-end solutions using React, TypeScript, JavaScript, and Java/Spring Boot.

• Design and implement event-driven microservices using AWS services such as SNS, SQS, and Kafka.

• Integrate AI capabilities, including Agentic AI, LLMs/SLMs, MCP, RAG, and agent orchestration frameworks.

• Establish CI/CD pipelines, automated testing, performance testing, and production monitoring.

• Deploy and manage scalable applications using Docker, Kubernetes, AWS ECS/EKS, and serverless technologies.

• Implement security best practices across APIs, cloud infrastructure, and application services.

• Collaborate with product, design, data, architecture, and risk teams.

• Mentor developers and promote engineering best practices.

Required Skills & Qualifications

• 12 years of professional software engineering experience.

• Strong expertise in Java 11/17/21, Spring Boot, REST APIs, JSON, and OpenAPI.

• Extensive experience with microservices, API integration, and asynchronous messaging using Kafka, SNS, or SQS.

• Strong front-end development experience with React, TypeScript, and JavaScript.

• 3 years of experience architecting cloud-native services on AWS.

• Experience with API versioning, backward compatibility, schema evolution, and contract testing.

• Hands-on experience with Docker, Kubernetes, ECS/EKS, and serverless computing.

• Proficiency in CI/CD tools such as Jenkins and Spinnaker.

• Experience with automated testing, load testing, and performance optimization.

• Strong SQL skills with PostgreSQL, MySQL, or Aurora, and NoSQL databases such as DynamoDB or DocumentDB.

• Experience with Redis caching, Terraform/CloudFormation, and infrastructure as code.

• Knowledge of monitoring and observability tools such as Splunk, Dynatrace, Grafana, and CloudWatch.

• Understanding of AWS security services, IAM, KMS, Secrets Manager, WAF, and application security.

• Excellent communication, stakeholder management, and mentoring skills.

AI & Emerging Technology Skills

• Experience integrating Agentic AI, LLMs/SLMs, MCP, RAG, and AI orchestration frameworks.

• Exposure to AI-assisted development tools such as GitHub Copilot and Claude.

• Prompt engineering and AI-driven application development experience.

• Python experience for LLM engineering, automation, and data processing is a plus.

Preferred Skills

• Experience with micro frontends, WebSockets, Node.js, and service workers.

• Knowledge of CEN/XFS APIs.

• Experience with OpenTelemetry and Datadog.

• Commercial banking domain knowledge is a plus.

• Familiarity with Agile methodologies and modern DevOps practices.

Top 3 Required Skill Areas

1. Full Stack Java Development: Java, Spring Boot, microservices, REST APIs, API integration, Kafka, ReactJS, TypeScript, JavaScript, WebSockets, and Node.js.

2. Cloud & DevOps Engineering: AWS, CI/CD, Docker, Kubernetes, Terraform, service workers, and Agile methodologies.

3. Monitoring & Observability: Grafana, Splunk, Dynatrace, CloudWatch, and OpenTelemetry.