Sr, Java Developer

UNICON International Inc.; Torrance (CA); On-site; USD 110,000 - 115,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

401(k)

Other standard benefits as applicable

Job summary

UNICON International Inc. is seeking a Sr. Java Developer to deliver backend software, design cloud-native solutions, and provide production support from Torrance, CA.

The role is onsite with a strong emphasis on Java/J2EE, Spring Boot, and AWS services to build scalable microservices and data-driven applications. The ideal candidate has 5–8+ years of experience in backend development, proficiency with containerization and CI/CD, and a solid understanding of security and performance in

Qualifications

• 5-8+ years of professional software development experience with backend focus.

Responsibilities

• Develop backend programs using Java/J2EE, Spring Boot, and related frameworks.

Skills

Java/J2EE

Spring Boot

AWS

Docker

Kubernetes

CI/CD

Cloud security

Agile/Scrum

Microservices

RESTful APIs

AI-assisted tools

Education

BS/MS degree

Job description

Position Overview

The “Sr. Developer” will deliver exceptional support to develop meaningful digital experience and strengthen our customer experience. The candidate will support all digital applications- design, development, production support, and solutioning.

Job Title: Sr, Java Developer
Location: Torrance, CA
Work Model: Onsite
Compensation: $110-115k per year
Work Type: Onsite 4 days per week
Travel: ?5%
Overtime: Yes

Must Have

• BS/MS degree

What You Will Be Doing

• 5-8+ years of professional software development experience, with a strong focus on backend development using Java/J2EE, Spring Boot, Spring Data JPA, Hibernate, and related open-source frameworks.
• Strong hands-on experience designing, developing, and supporting cloud-native applications on AWS, utilizing services such as Lambda, API Gateway, EKS, ECS, S3, RDS, DynamoDB, SNS, SQS, EventBridge, Amazon MQ, MSK (Kafka), CloudWatch, and IAM.
• Proficient in microservices architecture, RESTful APIs, event-driven systems, and serverless application development, with a strong understanding of distributed systems design principles.
• Experience with containerization and orchestration technologies, including Docker, Kubernetes, Amazon EKS, and/or Red Hat OpenShift.
• Strong understanding of Java fundamentals, JVM internals, concurrency, multithreading, performance optimization, and functional programming concepts (Lambda Expressions, Streams API, CompletableFuture, etc.).
• Experience with relational and NoSQL databases, including Amazon RDS, PostgreSQL, MySQL, DynamoDB, and related data modeling and performance optimization techniques.
• Hands-on experience implementing CI/CD pipelines and DevOps practices using tools such as Jenkins, GitLab CI/CD, GitHub Actions, AWS CodePipeline, Terraform, CloudFormation, or similar technologies.
• Knowledge of cloud security and application security best practices, including IAM, OAuth2, OpenID Connect, JWT, secrets management, encryption in transit and at rest, and secure API design.
• Strong problem-solving, debugging, troubleshooting, and performance tuning skills in large-scale production environments.
• Experience working in Agile/Scrum teams, participating in architecture discussions, code reviews, technical design, and mentoring junior engineers.
• Experience leveraging AI-assisted engineering tools (GitHub Copilot, Amazon Q, Cursor, Claude, OpenAI, or similar) to improve development productivity, code quality, testing, documentation, and troubleshooting.

Desired Skills (not must haves, but nice to have skills)

• Proficiency in programming languages like Python, experience with various AI/ML frameworks
• Familiarity with enterprise AI/LLM concepts including prompt engineering, Retrieval-Augmented Generation (RAG), vector databases, agentic workflows, and responsible AI practices.
• AWS, Kubernetes, AI/ML, or other relevant professional certifications.

Compensation & Benefits

• Medical, dental, and vision insurance
• 401(k)
• Other standard benefits as applicable

About Unicon

UNICON is a workforce solutions provider with over 35 years of experience supporting organizations across a variety of industries. We partner with our clients to deliver skilled professionals while maintaining a strong focus on quality, compliance, and long-term relationships. UNICON is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status.