Senior Java Full Stack Developer-6

Realign Llc; McLean (VA); On-site; USD 140,000 - 190,000; Full time

Job summary

Realign Llc in McLean, VA seeks an experienced Senior Java Full Stack Developer with 12+ years of hands-on Java experience. You will design and own high-throughput Java/Spring Boot microservices, REST APIs, and batch processing pipelines while working across CI/CD, security, monitoring, and cloud-native AWS deployments.

The ideal candidate has strong expertise in Java, Spring Boot, Spring Batch, REST, OAuth2, and PostgreSQL, with a track record of building scalable, secure, and observable

Qualifications

• 12+ years of hands-on Java development and 12+ years overall software experience.
• Strong expertise in Java, OOP, Collections, Concurrency, and Clean Code.
• Deep hands-on experience with Spring Boot and Spring Batch.
• Experience with RESTful APIs, OAuth2, retries, and resilient patterns.
• Proficient in SQL and PostgreSQL with performance tuning.

Responsibilities

• Design, develop, and maintain high-throughput Java/Spring Boot microservices for enterprise data processing.
• Develop secure REST APIs and AWS integrations using API Gateway/Lambda.
• Implement OAuth2 client-credentials authentication and resilient service-to-service communication.
• Build and optimize Spring Batch jobs and ETL-like data pipelines.
• Lead CI/CD pipelines and cloud-native deployments; ensure production readiness and observability.
• Mentor junior engineers and contribute to architecture discussions.

Skills

Java

Spring Boot

Spring Batch

Microservices

REST APIs

SQL

PostgreSQL

AWS

CI/CD

OAuth2

Security

Tools

AWS Cloud Services

CloudFormation

CodePipeline

CodeBuild

CodeDeploy

Lambda

API Gateway

Job description

McLean, Virginia 22043 Posted October 1st, 2026Job Type: ContractJob Category: ITJob DescriptionJob Title: Senior Java Full Stack DeveloperExperience: 12+ YearsEmployment Type: ContractLocation: Mclean, VAJob SummaryWe are seeking a highly experienced Senior Java Full Stack Developer with 12+ years of hands-on experience in Java development, Spring Boot, Spring Batch, microservices, REST APIs, SQL/PostgreSQL, and AWS cloud services.The ideal candidate will have strong experience designing, developing, and owning high-throughput Java/Spring Boot microservices, enterprise integration workflows, batch processing pipelines, and cloud-native applications. The candidate should also be comfortable working across development, production readiness, CI/CD, security, monitoring, and troubleshooting.Must-Have Technical Skills10+ years of hands-on Java development12+ years of overall software development experience preferredStrong expertise in Java, OOP, Collections, Concurrency, and Clean CodeDeep hands-on experience with Spring BootStrong experience with Spring BatchExperience with Spring Batch Jobs, Steps, Readers, Processors, Writers, Chunking, Partitioning, and RecoveryStrong experience developing RESTful APIs using Spring MVC/WebFluxExperience building and consuming secure and resilient REST integrationsStrong knowledge of OAuth2 client-credentials authenticationExperience implementing API retries, timeout strategies, and resilient integration patternsStrong SQL and PostgreSQL experienceExperience with complex queries, indexing, transactions, and performance tuningStrong experience with Spring Data JPA and JDBC TemplateHands-on experience with AWS cloud servicesStrong experience with CI/CD and cloud-native application developmentKey ResponsibilitiesDesign, develop, and maintain high-throughput Java/Spring Boot microservices for enterprise integration and inbound data processing.Design and implement Spring Batch jobs and end-to-end data processing pipelines.Develop secure and scalable REST APIs and integrations using Spring Boot and AWS API Gateway/Lambda.Implement OAuth2 client-credentials authentication and secure service-to-service communication.Develop resilient integrations with appropriate retry mechanisms, timeout strategies, exception handling, and observability.Build file/API-to-database synchronization processes.Design and develop cloud-native applications using AWS services including EC2, S3, Lambda, ECS, EKS, Fargate, and DynamoDB.Develop and maintain serverless architectures using AWS Lambda, API Gateway, CloudFormation, and Step Functions.Develop and maintain CI/CD pipelines using AWS CodePipeline, CodeBuild, and CodeDeploy.Implement automated testing and deployment processes.Design and maintain AWS infrastructure and cloud deployment configurations.Monitor, troubleshoot, and optimize application performance using CloudWatch and X-Ray.Implement AWS security best practices using IAM, KMS, and CloudTrail.Develop backup and disaster recovery solutions using AWS services such as S3 and EBS.Optimize SQL queries, database transactions, indexing, and ETL-style workloads in PostgreSQL.Ensure applications are production-ready, scalable, secure, and highly available.Collaborate with QA, DevOps, Product, Data, and other cross-functional teams.Participate in architecture discussions and provide technical guidance.Mentor junior and mid-level engineers through code reviews, design reviews, and engineering best practices.Required SkillsCloud Developer SQL Application Developer