Senior Full Stack Software Engineer Job at JSR Tech Consulting, Newark, NJ

  • JSR Tech Consulting
  • Newark, NJ

Job Description

Senior Full Stack Software Engineer

Contract-to-Hire Opportunity with a Major Investment Firm

Location: Newark, NJ (Hybrid - 3 Days/Week Onsite)

Duration: Contract-to-Hire

Pay Rate: Up to $65/hour W2 (Based on Experience)

Employment Type: W2 Only (No C2C)

Candidates: Local Candidates Preferred

We are seeking an experienced Senior Full Stack Software Engineer to join a growing technology team within a leading investment management organization. This role offers the opportunity to build enterprise-scale, cloud-native applications while working with modern technologies including Java, React, Spring Boot, AWS, and AI-assisted development tools.

The ideal candidate will have a strong background in full stack application development, cloud technologies, and financial services, along with experience building scalable, secure, and high-performing enterprise applications.

What You'll Do

  • Design, develop, and maintain enterprise-grade applications using modern software engineering best practices
  • Build high-quality, well-documented, and maintainable code following established coding standards
  • Collaborate with Product Owners, Technical Leads, and cross-functional teams to design and deliver scalable business solutions
  • Develop RESTful APIs, microservices, and cloud-native applications
  • Write unit tests, integration tests, and automated test suites
  • Troubleshoot production issues and implement long-term solutions
  • Participate in architecture discussions and contribute to application design decisions
  • Mentor team members and promote engineering best practices
  • Work with modern DevOps tools and CI/CD pipelines to support continuous delivery
  • Build secure, reliable, and scalable applications utilizing AWS cloud services
  • Leverage AI-assisted development tools to improve engineering productivity and software quality

Required Qualifications

  • Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent experience)
  • 6+ years of hands-on experience building enterprise software applications
  • Strong experience working within Agile development environments
  • Experience with Test-Driven Development (TDD)
  • Excellent analytical, communication, collaboration, and problem-solving skills
  • Ability to quickly learn new technologies and solve complex technical challenges
  • Financial Services or Insurance industry experience is required

Technical Skills

  • Strong programming experience with Java, Python, JavaScript, TypeScript, and C#
  • Extensive experience building Java applications using Spring Framework, Spring Boot, Maven, and Microservices
  • Experience with distributed systems, object-oriented design, multithreading, concurrency, and design patterns
  • Front-end development experience with React
  • Experience with Node.js, Flask, and Django
  • Strong knowledge of relational and NoSQL databases including Oracle, PostgreSQL, DB2, Redshift, and PL/SQL
  • Experience with event-driven and streaming technologies including Amazon SQS, Kinesis, AWS MSK, and EventBridge
  • Experience designing, developing, and consuming REST APIs and Service-Oriented Architecture (SOA)
  • Experience with API Management platforms such as Kong and Apigee
  • Experience with automated testing frameworks and software quality practices
  • Understanding of accessibility standards and secure software development
  • Strong knowledge of application security including authentication, authorization, JWT, OAuth 2.0, OpenID Connect, SAML 2.0, SSL, encryption, and DevSecOps
  • Experience using GitHub, Bitbucket, Jenkins, and modern DevOps practices
  • Knowledge of application monitoring, logging, and Software Development Lifecycle (SDLC) best practices
  • Hands-on experience with AWS cloud services across compute, storage, databases, IAM, analytics, and application services

Preferred Qualifications

  • Strong experience with Domain-Driven Design (DDD)
  • Experience building AWS cloud-native applications
  • Strong understanding of modern software architecture patterns
  • Excellent system design and critical thinking skills
  • Experience with AI-assisted development tools and agentic frameworks such as Claude Code, GitHub Copilot, or similar platforms

If you're a Senior Full Stack Engineer looking to work on enterprise-scale applications while leveraging modern cloud technologies and AI-assisted software development, we'd love to hear from you.

Job Tags

Contract work, Local area, 3 days per week

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