Senior Software Engineer III jobs in United States
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Apex Systems · 1 day ago

Senior Software Engineer III

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. They are seeking a Senior Software Engineer III to lead the design, development, and maintenance of software applications across the full technology stack, ensuring high-quality software solutions through effective collaboration and technical expertise.

Human ResourcesInformation TechnologyRecruiting
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H1B Sponsor Likelynote

Responsibilities

Lead full stack application development initiatives with a focus on quality and scalability
Design, code, and debug applications using multiple programming languages, with emphasis on Java (Spring Boot) and JavaScript frameworks such as React or Angular
Conduct software, code, requirements, and system analyses to support project objectives
Perform software reviews, identify code metrics, and contribute to system risk and reliability assessments
Apply object‑oriented design and analysis (OOA/OOD) principles to develop robust and maintainable solutions
Develop software models and simulations to support system design and validation
Create and refine front‑end graphical user interfaces that enhance usability and user experience
Execute software testing and quality assurance activities to ensure reliable performance
Optimize application performance through tuning, automation, and usability improvements
Support, maintain, and document software functionality throughout the development lifecycle
Integrate new software components with existing systems and infrastructure
Research, evaluate, and recommend emerging technologies for potential adoption
Ensure compliance with established coding standards, security guidelines, and industry best practices
Implement localization and globalization features to support multi‑region deployments

Qualification

JavaSpring BootJavaScript frameworksObject-oriented designLeadership capabilitiesCommunication skillsOrganizational skills

Required

Bachelor's degree in Computer Engineering, Computer Science, Information Technology, or a related field
Strong communication, organizational, and leadership capabilities

Benefits

Medical
Dental
Vision
Life
Disability
Employee stock purchase program
401K program
Health Savings Account on the HDHP plan
SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions
Corporate discount savings program
On-demand training program
Access to certification prep
Library of technical and leadership courses/books/seminars
Certification discounts
Career Coach

Company

Apex Systems

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Apex Systems, a division of On Assignment, provides organizations with IT staffing solutions to address gaps in their current workforce.

H1B Sponsorship

Apex Systems has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (28)
2024 (21)
2023 (35)
2022 (26)
2021 (29)
2020 (38)

Funding

Current Stage
Late Stage

Leadership Team

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Roger Wahman
Chief Technology Officer - SVP
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Andrea Schiola
Global Head of Technology Partnerships, SVP, Principal
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Company data provided by crunchbase