Senior Java Full-Stack Developer

Full stack Developer (Core Backend: Java and Microservices)- With Payments

Technical Skills

Core Backend: Java and Microservices

Java 17+/21; Spring Boot and Spring Cloud; REST and GraphQL; microservices; relational databases, including PostgreSQL and Amazon Aurora; NoSQL databases, including DynamoDB; JPA and Hibernate; JUnit and Mockito; API design; and security protocols, including OAuth 2.0/OIDC, JWT, and mTLS.

Cloud and Frontend:

AWS services, including ROSA, EKS, ECS, Lambda, API Gateway, SQS, SNS, EventBridge, DynamoDB, RDS/Aurora, CloudWatch, IAM, and VPC; Infrastructure as Code using Terraform or CloudFormation; CI/CD using GitLab or Jenkins; and frontend development using Angular 14+, TypeScript, and RxJS.

Engineering Tools and Practices

Git; Maven or Gradle; IntelliJ IDEA; SonarQube; Docker; Kubernetes; Postman or Insomnia; OpenAPI/Swagger; Grafana and Prometheus; Open Telemetry; Jira and Confluence; feature-flag management using Launch Darkly; code quality; and secure software development lifecycle practices.

Mandatory Skills

Payments:

PCI DSS, tokenization, 3-D Secure, ISO 20022, RTP, ACH, SWIFT, settlement and reconciliation, chargebacks, and fraud signals.

Generative AI:

Retrieval-augmented generation, Amazon Bedrock or OpenAI, embeddings, governance, and personally identifiable information controls.

Data:

Apache Spark, AWS Glue, and Amazon Athena.

Site Reliability Engineering:

Service-level objectives and error budgets.

Programming:

Python.

Key Responsibilities

Software Development and Modernization

• Develop efficient, reliable software using Java, C#, Python, .NET, Spring Boot, microservices, and APIs.
• Enhance and maintain on-premises and internal Platform as a Service application, and modernize them for AWS in line with project timelines.
• Design and implement serverless patterns for containerized applications.
• Build industry-standard APIs and establish patterns for API consumption, call routing, connectivity protocols, and policy enforcement.
• Design and implement architecture patterns optimized for service-level agreements, reliability, and cost.
• Evaluate upstream and downstream dependencies to anticipate the long-term consequences of immediate technical decisions.

Engineering Excellence and Security

• Promote software craftsmanship practices, including test-driven development, behavior-driven development, unit and integration test automation, continuous integration, and continuous deployment.
• Initiate and lead code reviews and continuous improvement efforts.
• Ensure adherence to security standards and privacy requirements from the earliest stages of development.
• Proactively resolve existing technical debt and prevent new technical debt.
• Balance usability and performance requirements, and clearly communicate trade-offs across the team.

Performance, Operations, and Reliability

• Drive performance improvements by monitoring detailed metrics, issues, trends, and costs; recommend solutions and process changes that improve efficiency.
• Administer product upgrades and patches.
• Support teammates with production troubleshooting, maintenance, and issue resolution.
• Participate in the 24/7 on-call support rotation.

Agile Delivery and Collaboration

• Participate actively in Agile ceremonies, including sprint planning, daily stand-ups, and retrospectives, to support continuous improvement.
• Collaborate regularly to share ideas, gain perspective, and maintain a common understanding of priorities and technical decisions.
• Communicate critical information clearly and promptly, listen actively, and seek clarification when needed.
• Create practical documentation and operational playbooks.
• Maintain delivery momentum and meet agreed deadlines.