Java Back End Architect

Job Description

BACKEND JAVA ARCHITECT

6 MONTH + CONTRACT TO HIRE

3 DAYS A WEEK ONSITE IN AUBURN HILLS, MI

HOURLY RATE: $65/hr. W2 / C2C IS OK

ALTA IT Services is seeking a hands-on Java Backend Architect to lead the evolution of a high-scale, distributed microservices platform. This role is ideal for a highly skilled technologist with deep expertise in Spring Boot microservices, cloud architecture, and secure, scalable API ecosystems. This is a 6-month+ contract-to-hire assignment, with potential for extension. Hybrid 3 days a week, onsite at an automotive customer in Auburn Hills, MI.

Key Responsibilities

· Architect and Design scalable, resilient backend services using Java and Spring Boot

· Own the architecture of our microservices ecosystem, ensuring performance, security, and modularity

· Implement secure services using Spring Security, annotations, and various forms of API authentication

· Integrate IoT & Messaging layers using MQTT, RabbitMQ, Kafka, and AWS IoT Gateway

· Design robust data models across both relational (e.g., PostgreSQL/MySQL) and NoSQL (e.g., DynamoDB, MongoDB) databases

· Champion cloud-native design leveraging AWS services, Docker, and Kubernetes

· Drive API strategy, including RESTful API design, gateway configuration, and lifecycle management

· Lead log analysis & monitoring using tools like Kibana and Grafana to ensure observability and operational insight

· Code actively, mentor developers, and guide technical decisions—not just create diagrams

· Communicate architecture vision clearly to engineers, executives, and stakeholders with compelling clarity and visual articulation

Must-Have Skills

· Strong hands-on expertise in Java, Spring Boot, Spring Security, and advanced Spring annotations

· Deep understanding of MQTT/RabbitMQ/Kafka, AWS IoT, and event-driven architecture

· Proven ability in data modeling (SQL & NoSQL) and designing for performance & scalability

· Hands-on with AWS Cloud, Docker, and Kubernetes in production environments

· Mastery in API design, including gateway integration and various forms of API authentication (OAuth2, JWT, API Keys, etc.)

· Proficiency in observability tools: Kibana, Grafana, CloudWatch

· Crystal-clear communication & presentation skills

· A passion for clean code, scalable systems, and mentoring engineering teams

Experience:

15+ years in IT 5–7 years in Architecture Platform Scale: 2 Million+ Customers

Please send an updated resume to Melissa McNally via for consideration.

System One and its subsidiaries are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

Hybrid remote