Zenith Algorithms
Sr. Java Developer
Skills
19 days ago
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Important information
Contract type:
Permanent, Freelance / Contract, Temporary
Salary:
$104,000 – $124,800 / year
Location:
St. Louis, MO, USA
Work mode:
Onsite
Published on:
1 October 2026
What they need
Location: St. Louis, MO (onsite client interview and worksite mandatory Only)
Core Technical Must-Haves
- 8+ years of professional Java development experience (enterprise-scale microservices)
- 5+ years of hands-on cloud platform experience (AWS strongly preferred) – architecture + deployment
- Deep expertise with Spring Boot and related Java frameworks
- Experience with GraphQL and Node.js in backend development
- Strong background in event-driven architectures and messaging systems (Apache Kafka, Apache Camel)
- Proven experience leading application modernization (monolith-to-microservices, legacy integrations)
- Expertise in containerization & orchestration: Docker + Kubernetes
- Familiarity with service meshes (e.g., Istio), API gateways (Zuul, NGINX), and OAuth2/SAML
- Proficiency with CI/CD tools (GitLab, Jenkins)
- Experience with observability tools (DataDog, SumoLogic) and distributed tracing
- Strong understanding of telecommunications systems (identity management, billing systems, device/network management preferred)
. Leadership & Delivery Fit
- Experience architecting and leading development of robust Java-based microservices
- Proven ability to guide and mentor engineering teams (best practices in design, testing, DevOps)
- Track record of driving cloud-native solution design and deployment (AWS, Kubernetes, Docker)
- Experience collaborating with cross-functional teams and aligning technical solutions with business goals
- Champions CI/CD pipelines, automated testing, and observability
- Ensures secure coding practices, performance optimization, and production readiness
- Strong documentation and knowledge-sharing habits
- Excellent communication and stakeholder engagement skills
. Preferred / Differentiating Experience
- Telecommunications industry experience (customer identity, billing systems, network equipment management)
- Full-stack exposure (React or Angular for internal tooling)
- Familiarity with Agile/Scrum and SAFe frameworks
- Cloud-native tool development or internal platform engineering experience
- Any hands-on AI development / AI-assisted development experience (noted in the title – nice-to-have differentiator)
. Education
- Bachelor’s or Master’s degree in Computer Science, Engineering, or related field
Pay: $50.00 - $60.00 per hour
Work Location: In person
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