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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Java Technical Lead - **Company:** CYNET SYSTEMS INC. - **Location:** Mason, OH, United States - **Experience:** Expert - **Salary:** $116,480.0 - $126,880.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Amazon S3, Apache HTTP Server, Business Logic, Automation of Tests, Code Review, Databases, Continuous Integration, Information Engineering, Data Security, Gradle, Identity and Access Management, Apache Maven, MongoDB, MySQL, OAuth, OpenID, Oracle Databases, Oracle (Applications), Open Web Application Security, Query Optimization, Role-Based Access Control, Prometheus, JSON Web Token, Data Streaming, Data Logging, Data Ingestion, Grafana, Spring-boot, Git, Cloudformation, Kubernetes, AWS Glue, Apache Kafka, Cloudwatch, Restful APIs, Data Pipelines, Api Management, Docker, Microservices - **Published:** July 18, 2026 - **Apply:** https://www.careerjet.com/jobad/usae3a500a6e109fd8cfc863a37aeb9ec5 ## About the Role * Java Development 10+ years. * Spring Boot & Microservices 8+ years. * REST API Development 8+ years. * AWS Cloud (S3, IAM, Security Fundamentals) 6+ years. * AWS Glue (Jobs, Crawlers, Workflows) 4+ years. * ELT/Data Ingestion Pipelines 4+ years. * Apache Iceberg (Schema Evolution, Partitioning, Compaction) 2+ years. * Oracle Database / Aurora MySQL 8+ years. * MongoDB 3+ years. * CI/CD, Git, Maven/Gradle, Automated Testing 5+ years. * Technical Leadership (Architecture, Code Reviews, Mentoring) 3+ years. * Production Support & Troubleshooting 5+ years., * Athena optimization experience (partition pruning, Iceberg maintenance/compaction strategy). * Kafka/event streaming. * Docker/Kubernetes (EKS) or ECS. * Observability tools: CloudWatch, Client /ELK, Prometheus/Grafana, OpenTelemetry. * Python for scripting/automation. * Security: OAuth2/OIDC, JWT, OWASP, Secrets Manager/Parameter Store. * Infrastructure as Code: Terraform/CloudFormation. Qualification And Education: * Strong experience in Java and Spring Boot building production APIs/microservices. * Strong AWS experience including S3 and security fundamentals (IAM, encryption, least privilege). * Hands-on experience with AWS Glue and ELT/data ingestion patterns. * Working knowledge of Apache Iceberg tables (or strong experience with lakehouse table formats). * Strong database experience with Oracle/Aurora MySQL, plus knowledge of MongoDB. * Experience with CI/CD, Git, Maven/Gradle, and automated testing. * Strong troubleshooting and communication skills; ability to lead design discussions. ## Description * Lead the design and development of microservices and REST APIs using Java and Spring Boot. * Define API contracts, implement business logic, validations, standardized error handling, and logging. * Apply resiliency patterns (timeouts, retries, circuit breakers, idempotency) and drive performance improvements. * Conduct code reviews, enforce engineering standards, and mentor team members. * Build and operate services on AWS, following security and operational standards (IAM basics, networking awareness, observability). * Support CI/CD, release activities, and production troubleshooting. * Design and optimize data access with Oracle Aurora MySQL and MongoDB. * Perform query tuning/indexing guidance and improve service performance and reliability. * Work with file and table-based data in Amazon S3 (folder/partition design, access controls, encryption, lifecycle). * Support ELT pipelines using AWS Glue (jobs, crawlers, workflows) for ingestion, transformation, and standardization. * Design and work with Apache Iceberg tables (schema evolution, partitioning, table properties, compaction/maintenance patterns). * Collaborate with data engineering and analytics teams to enable consumption via Athena/Glue Data Catalog (and related query engines). * Troubleshoot data pipeline issues (permissions, catalog/table visibility, schema mismatches, performance bottlenecks). * Integrate services with existing ML inference endpoints; validate payloads and handle model-driven response patterns. * Support controlled rollouts for model-dependent features in coordination with ML teams. ## Related Videos - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect) - [MySQL Protocol Features You Should Be Aware Of](https://www.wearedevelopers.com/videos/100267-mysql-protocol-features-you-should-be-aware-of) - [Effective Java Strategies and Architectures for Clouds](https://www.wearedevelopers.com/videos/186-effective-java-strategies-and-architectures-for-clouds) - [Branch your database like your code: How schema changes and pull requests go hand in hand](https://www.wearedevelopers.com/videos/350-branch-your-database-like-your-code-how-schema-changes-and-pull-requests-go-hand-in-hand) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) ## Related Articles - [Top 10 Java Libraries](https://www.wearedevelopers.com/magazine/364-top-10-java-libraries) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for) - [Everything a Developer Needs to Know About MCP with Neo4j](https://www.wearedevelopers.com/magazine/604-everything-a-developer-needs-to-know-about-mcp-with-neo4j) - [Making Data Warehouses Fast: A Developer’s Story](https://www.wearedevelopers.com/magazine/107-making-data-warehouses-fast-a-developer-s-story) - [The Best X (Twitter) Accounts for Developers](https://www.wearedevelopers.com/magazine/294-the-best-x-twitter-accounts-for-developers)