Senior Software Engineer – Java & Payment Technologies

Senior Software Engineer – Java & Payment Technologies


Job ID: mrp-882733

Irvine, CA, US

Information Technology

Full Time,

$135000 - $150000

On-site

Other/Non Classified

Irvine, CA, US

$135000 - $150000

Full Time,

Other/Non Classified

On-site

Information Technology

Job details

Senior Software Engineer – Java & Payment Technologies

Our client, a fast-growing company within the EV/AV (Electric & Autonomous Vehicle) industry, is looking to add a Senior Software Engineer to their team in Irvine, CA. They’re seeking someone with strong experience in Java development, API integrations, embedded systems, payment processing/POS solutions, and UI development.

Please note: This is a fully onsite position requiring attendance 5 days per week at the Irvine office.

This role offers the opportunity to work on innovative embedded technologies that support next-generation payment and vehicle solutions. The ideal candidate will have a strong software engineering background with experience developing applications that interact with firmware, payment devices, backend services, and user-facing interfaces. You’ll collaborate with engineers across hardware, firmware, and software teams to build scalable, reliable, and high-performance solutions.

Required Skills & Experience

  • Bachelor’s or Master’s degree in Computer Science, Computer Engineering, Electrical Engineering, or a related field
  • Experience developing software for embedded systems
  • Strong Java programming skills
  • Experience building and supporting API integrations
  • Solid understanding of embedded systems and software architecture
  • Experience working with processors and peripheral interfaces
  • Background supporting payment processing platforms, POS systems, and payment devices
  • Experience with UI-layer development
  • Strong debugging and troubleshooting skills in embedded environments
  • Familiarity with Git, Jira, and Docker
  • Experience with scripting and automation
  • Knowledge of build tools and software deployment processes

Desired Skills & Experience

  • C++ experience is highly preferred
  • Exposure to cloud-based environments, particularly OTA (Over-the-Air) updates and backend integrations
  • Familiarity with mobile payment technologies
  • Prior experience in the EV, AV, or automotive industry

What You Will Be Doing
Tech Breakdown

  • Java Development
  • API Integration
  • Payment Processing & POS Systems
  • User Interface Development
  • Firmware & Software Integration
  • Test Automation
  • Git, Jira, Docker
  • Cloud Technologies (Nice to Have)
  • C++ (Preferred)

Daily Responsibilities

  • Design, develop, and maintain software applications for embedded systems
  • Write and optimize Java-based code while contributing to C++ development efforts when needed
  • Implement, validate, and support firmware-related functionality
  • Create verification suites and automate test cases
  • Partner with firmware and embedded engineering teams to ensure effective system integration
  • Debug and troubleshoot software-to-firmware communication issues
  • Develop and execute unit, integration, and system-level testing
  • Analyze and resolve software defects, performance issues, and system bottlenecks
  • Maintain development and testing documentation
  • Provide project updates and communicate technical risks, issues, and resolutions
  • Collaborate with hardware engineers, software developers, and product managers throughout the development lifecycle
  • Participate in architecture discussions, design reviews, and code reviews

The Offer
Base Salary: $135,000 – $150,000
Benefits

  • Medical, Dental, Vision, and Life Insurance
  • Short-Term & Long-Term Disability Coverage
  • 401(k) with 100% Company Match
  • Paid Vacation and Sick Time
  • 11 Paid Holidays

Applicants must be authorized to work in the United States on a full-time basis now and in the future.

Share this job

I want more jobs like this in my inbox.

Share this job

As part of our promise to talent, Kelly supports those who work with us through a variety of benefits, perks, and work-related resources. Please note: The following benefits reflect Kelly's general offerings. Eligibility may vary by assignment, location, and job type. Kelly offers eligible employees voluntary benefit plans including medical, dental, vision, telemedicine, term life, whole life, accident insurance, critical illness, a legal plan, and short-term disability. As a Kelly employee, you will have access to a retirement savings plan, service bonus and holiday pay plans (earn up to eight paid holidays per benefit year), and a transit spending account. In addition, employees are entitled to earn paid sick leave under the applicable state or local plan. Click here for more information on benefits and perks that may be available to you as a member of the Kelly Talent Community.



About Kelly

Work changes everything. And at Kelly, we’re obsessed with where it can take you. To us, it’s about more than simply accepting your next job opportunity. It’s the fuel that powers every next step of your life. It’s the ripple effect that changes and improves everything for your family, your community, and the world. Which is why, here at Kelly, we are dedicated to providing you with limitless opportunities to enrich your life—just ask the 300,000 people we employ each year.

Kelly is committed to providing equal employment opportunities to all qualified employees and applicants regardless of race, color, sex, sexual orientation, gender identity, religion, national origin, disability, veteran status, age, marital status, pregnancy, genetic information, or any other legally protected status, and we take affirmative action to recruit, employ, and advance qualified individuals with disabilities and protected veterans in the workforce. Requests for accommodation related to our application process can be directed to the Kelly Human Resource Knowledge Center. Kelly complies with the requirements of California’s state and local Fair Chance laws. A conviction does not automatically bar individuals from employment. Kelly participates in E-Verify and will provide the federal government with your Form I-9 information to confirm that you are authorized to work in the U.S.

Kelly may use AI-powered tools during the recruitment and hiring process. For full details, including how Kelly uses AI, your rights, and how to request a reasonable accommodation, visit the Recruitment Artificial Intelligence Notice.