Senior Full Stack Software Engineer

JSR Tech Consulting; Newark (NJ); Hybrid; USD 82,656 - 96,432; Full time

Job summary

JSR Tech Consulting in Newark, NJ, is seeking a Senior Full Stack Software Engineer to develop cloud-native applications, utilizing modern technologies such as Java, React, and AWS. The ideal candidate will possess strong experience in building scalable applications for financial services.

This position allows for hybrid work, requiring three days onsite. The estimated pay rate is up to $65/hour based on experience.

Qualifications

• 6+ years of hands-on experience building enterprise software applications.
• Strong experience in Agile development environments.
• Financial Services or Insurance industry experience is required.

Responsibilities

• Design, develop, and maintain enterprise-grade applications.
• Collaborate with teams to deliver scalable business solutions.
• Develop RESTful APIs and microservices.

Skills

Java

Spring Boot

React

AWS

Agile development

Test-Driven Development (TDD)

Microservices

Education

Bachelor's degree in Computer Science or related field

Tools

Jenkins

GitHub

Maven

Docker

Job description

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

• 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.