Java Backend Developer with AWS

Valiant Technologies LLC; Chicago (IL); Hybrid; USD 86,000 - 123,000; Full time

Job summary

Valiant Technologies LLC is seeking a Java Backend Developer with AWS in Chicago. Hybrid work arrangement in a 12-month+ engagement. You will design and maintain scalable microservices using Java 17+, Spring Boot, Python, and AWS integration services.

The role requires 7+ years of backend experience, strong Java/Spring, and deep AWS knowledge (ECS/Fargate, S3, Lambda, SQS/SNS). You will implement robust observability, CI/CD pipelines, and mentor junior team members.

Qualifications

• 7+ years of backend software engineering experience in distributed, high-availability systems.
• Proficient in Java (Java 17+), Spring Boot, and Python.
• Strong AWS hands-on experience across core services (ECS/Fargate, S3, Lambda, SQS/SNS).
• Relational DB experience with PostgreSQL/Aurora and SQL optimization.
• CI/CD experience with Jenkins, GitHub Actions, CodePipeline, and IaC (CloudFormation).
• Unit and integration testing with JUnit/Mockito, and code reviews.

Responsibilities

• Design, build, deploy, and maintain scalable microservices and RESTful APIs using Java 17+ and Spring Boot.
• Architect resilient, fault-tolerant systems across AWS Availability Zones/Regions; perform failover testing.
• Investigate production incidents; perform RCA and improve observability via CloudWatch.
• Develop and optimize CI/CD pipelines with GitHub Actions, Jenkins, CodePipeline, and IaC (CloudFormation).
• Model relational data and optimize queries for Amazon Aurora PostgreSQL; tune performance.
• Mentor juniors and enforce automated testing standards (JUnit, Mockito).

Skills

Java

Spring Boot

Python

Education

Bachelor's degree in Computer Science/Engineering or related field

Tools

AWS (ECS/Fargate)

EventBridge

SQS

SNS

Lambda

S3

CloudWatch

Jenkins

GitHub Actions

CodePipeline

CloudFormation

Job description

US Citizen, Green Card, H-1B, OPT-EAD, CPT, Other

Job Title: Java Backend Developer with AWS

Location: Chicago, IL (hybrid)

Duration: 12 Months + Extension

Bill Rate: $76/hour (C2C)

Job Type: W-2, 1099, C2C

Client: To Be Discussed Later

Work Authorization:US Citizen, Green Card, OPT-EAD, CPT, H-1B, H4-EAD, Other

Key Responsibilities

• Cloud-Native & Integration Architecture: Design, build, deploy, and maintain scalable microservices, RESTful APIs, and event-driven architectures utilizing Java 17+, Spring Boot, Python, and AWS integration services.
• Resiliency & Disaster Recovery: Architect fault-tolerant, high-availability solutions across multiple AWS Availability Zones and Regions, conducting failover testing and actively reducing Mean Time to Resolution (MTTR).
• Production Operations & Root Cause Analysis: Investigate complex production incidents, perform root cause analysis (RCA), and implement robust observability frameworks using Amazon CloudWatch.
• DevOps & Pipeline Automation: Build, maintain, and optimize continuous integration and delivery (CI/CD) pipelines leveraging GitHub Actions, Jenkins, AWS CodePipeline, and CloudFormation infrastructure-as-code (IaC).
• Data Modeling & Optimization: Implement relational data models, craft complex queries, and tune database performance on Amazon Aurora PostgreSQL.
• Mentorship & Quality Standards: Drive peer code reviews, champion automated testing standards (JUnit, Mockito), and provide technical mentorship to junior developers.

Required Qualifications

• Experience: 7+ years of professional backend software engineering experience building and supporting distributed, high-availability production systems.
• Core Languages: Advanced, hands-on proficiency in Java (Java 17+), Spring Boot, and Python.
• AWS Cloud Engineering: Extensive hands-on experience across core AWS integration and compute services, including ECS/Fargate, EventBridge, SQS, SNS, Lambda, S3, and CloudWatch.
• Database & Performance: Strong relational database background with PostgreSQL / Amazon Aurora PostgreSQL, including schema design, query optimization, and tuning.
• CI/CD & IaC: Practical experience managing automated deployments using Jenkins, GitHub Actions, AWS CodePipeline, and CloudFormation.
• Testing: Demonstrated proficiency with automated unit and integration testing frameworks (JUnit, Mockito).
• Education: Bachelor's degree in Computer Science, Engineering, or a related technical discipline (or equivalent practical experience).

Preferred Qualifications

• AWS Certification: Active AWS Certified Solutions Architect, Developer Associate, or Cloud Practitioner certification (highly preferred).
• Domain & Integration Experience: Hands-on experience with Electronic Data Interchange (EDI), B2B messaging integrations, or high-volume transportation/railroad/logistics systems.

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.