Flexton Inc.

Senior (JAVA) Full-stack Software Engineer

Flexton Inc. Atlanta, GA

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Base pay range

$65.00/hr - $70.00/hr

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Position: Senior Full-stack Software Engineer

Location: Atlanta, GA (Manheim) (Hybrid – 2 days onsite/week)

Work Authorization: USC / GC only

Pay Rate: $65-70/hr

Target Experience: 7+ years

Potential to Extend: Yes

Potential to Convert to FTE: Yes


Top 5 Must-Have Skills

  1. Java
  2. JavaScript
  3. Automated deployments
  4. Unit testing
  5. Cloud API–deployed software


Job Description


As a Senior Full-stack Software Engineer, you will work within a cross-functional Agile team to design, develop, and maintain full-stack web applications, spanning backend services, frontend user interfaces, and integrations with internal systems. This role requires strong technical expertise, a passion for continuous improvement, and the ability to mentor and guide other engineers.

You will play a key role in shaping system architecture, promoting experimentation, and driving delivery excellence across the team.


Key Responsibilities

  • Collaborate with cross-functional team members to plan, develop, and deliver high-quality technical solutions within sprint timelines.
  • Design, develop, and maintain scalable full-stack web applications.
  • Participate in a rotating on-call schedule, diagnosing and resolving production issues with urgency.
  • Provide technical leadership, code reviews, and mentorship to junior and mid-level engineers.
  • Contribute to a culture of innovation by sharing best practices and proposing continuous improvements.
  • Identify, evaluate, and test new tools, technologies, and approaches to improve delivery and performance.
  • Build and maintain strong working relationships with business stakeholders.
  • Take ownership of products and accountability for business outcomes.
  • Work within Agile/Lean environments, actively participating in ceremonies and delivery cycles.
  • Support and contribute to test-driven development and iterative testing practices.


Required Qualifications

  • Bachelor’s degree in a related discipline with 7+ years of experience, or an equivalent combination of education and experience (e.g., Master’s + 2 years, PhD + 1 year, or 8 years of related experience).
  • Strong proficiency with Java stack, including: Maven, Spring Boot, JUnit or other testing tools

, JMeter or other load testing tools, REST or GraphQL APIs and authentication protocols.

  • Strong proficiency with JavaScript stack, including: JavaScript, TypeScript, React (preferred), Component libraries and modern frontend tooling (VSCode, etc.)
  • Experience with development tools and CI/CD pipelines, including: Git, GitHub Enterprise or similar, Unit, integration, and load testing, Postman, curl, Terraform, CloudFormation, or similar tools, Ability to troubleshoot enterprise API deployments (DNS, containers, infrastructure)
  • Cloud experience (AWS preferred; GCP or Azure acceptable), including: Automated provisioning, Serverless tooling, API creation and deployment, Load balancing and security best practices
  • Database experience with: SQL: PostgreSQL, MySQL, SQL Server, or Oracle, NoSQL: DynamoDB, DocumentDB, Cassandra
  • Experience with AI tools, including an understanding of their operation, benefits, and current limitations.
  • Seniority level

    Mid-Senior level
  • Employment type

    Full-time
  • Job function

    Information Technology, Supply Chain, and Other
  • Industries

    IT Services and IT Consulting, Software Development, and Transportation, Logistics, Supply Chain and Storage

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