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Peterson Technology Partners

Senior Backend Developer

On site

Chicago, United states

$ 70 /hour

Senior

Freelance

26-11-2025

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Skills

Python Java Go NoSQL MySQL MongoDB PostgreSQL GitHub CI/CD DevOps Docker Kubernetes Monitoring Jenkins Azure DevOps Problem-solving Architecture Databases Azure node.js AWS cloud platforms Spring Redis Spring Boot CI/CD Pipelines Kafka Microservices GitHub Actions

Job Specifications

Job Description

Our client is seeking for a highly skilled Senior Backend Developer with strong expertise in Java, API development, microservices architecture, and cloud platforms (Azure or AWS). The ideal candidate has hands-on experience building scalable backend systems, integrating services, optimizing performance, and leading technical initiatives. Exposure to other backend technologies and willingness to mentor junior developers is a strong plus.

Key Responsibilities

Design, develop, and maintain high-performance backend services using Java and modern frameworks (Spring Boot preferred).
Build and optimize RESTful APIs, microservices, and distributed systems.
Architect and implement backend components that meet scalability, reliability, and security standards.
Lead technical initiatives, drive solution design discussions, and provide guidance to junior developers.
Collaborate with cross-functional teams including Product, QA, DevOps, and Cloud Engineering.
Develop cloud-native solutions using AWS or Azure services (Lambda, ECS, EKS, API Gateway, Azure App Services, Functions, etc.).
Ensure system performance through monitoring, logging, and proactive optimization.
Contribute to design reviews, code reviews, and best-practice documentation.
Integrate backend systems with databases, queues, and third-party services.
Stay current with emerging backend technologies and recommend improvements.

Required Qualifications

8+ years of backend development experience, with deep proficiency in Java.
Strong experience building REST APIs, microservices, and event-driven architectures.
Proficiency with frameworks such as Spring Boot / Spring Cloud.
Experience deploying and building applications on AWS or Azure.
Solid understanding of relational and NoSQL databases (PostgreSQL, MySQL, MongoDB, DynamoDB, etc.).
Experience with CI/CD pipelines and DevOps practices (GitHub Actions, Jenkins, Azure DevOps, etc.).
Familiarity with message brokers (Kafka, RabbitMQ, SQS, EventHub, etc.).
Strong problem-solving skills and ability to take ownership of technical initiatives.

Preferred / Nice-to-Have Skills

Experience with Kubernetes, Docker, and container orchestration.
Background in serverless architectures.
Exposure to other backend languages (Node.js, Python, Go).
Experience with caching technologies (Redis, Memcached).
Knowledge of security principles and API authentication methods (OAuth2, JWT).
Previous experience mentoring or leading development teams.

Rate: $65/hour - $70/hour (depends on experience level). This is a contract to hire position with candidates expected to work 40 hours/ week.

About the Company

Peterson Technology Partners (PTP) is an Information Technology Consulting and Software Development firm with extensive knowledge of business practices and recruiting agency expertise to deliver the highest quality IT services to our customers. One of the biggest challenges facing businesses today is finding the right IT talent. With so much competition in the industry, it can be difficult to attract and retain top professionals. That's where we come in. PTP provides "Best-in-Class" IT recruiting services with a focus on web... Know more