Software Engineer Co - op - Billing

Software Engineer Co-Op- Billing

Location: Boston, MA

Program Dates: January – June 2026

Hours: Full-time (40 hours/week)

Eligible Students: Undergraduate and Master's

Zipcar, the world's leading car-sharing company, is looking to add new talent to our team. Today, Zipcar provides hundreds of thousands of people with a viable alternative to traditional car ownership, saving them money, time, and headaches. Around the world—people are making the decision to live car free and enjoying the convenience and environmental benefits of having "wheels when you want them."

As we continue to grow our operations, we are looking for talented, passionate people with great ideas to join the team. We aim to create an environment that is supportive, diverse, and as fun as our brand. If you're results-oriented, independent, dedicated, and ready to contribute to an unparalleled member experience for our community of Zipsters, we encourage you to apply.

About the Role:

We are looking for a detail-oriented and analytical co-op to support the development and maintenance of Zipcar's billing systems and financial operations. These are the critical systems that process payments and manage financial workflows for our car sharing platform.

This role requires a methodical problem solver with strong analytical skills and attention to detail. This is an excellent opportunity to gain hands-on experience with enterprise billing systems while supporting major modernization initiatives.

What You'll Do:

• Support billing system maintenance and invoice processing workflows
• Assist with integration testing for payment systems and customer billing processes
• Contribute to billing documentation and process improvement initiatives
• Assist with new billing engine transition and migration activities
• Investigate and resolve billing-related support tickets and discrepancies
• Collaborate with finance and engineering teams on system upgrades
• Support compliance reporting and seasonal billing volume management
• Participate in code reviews and testing procedures for billing system changes
• Work within an Agile framework alongside cross-functional teams

Technologies You'll Use:

• Languages: Ruby, Java
• Architecture: RESTful APIs, Microservices
• Databases: PostgreSQL
• Cloud & DevOps: Docker, Kubernetes, CI/CD, AWS/GCP/Azure
• Tools: Git, Jira, IntelliJ, Postman

What You'll Learn:

• Make meaningful contributions that directly impact real users.
• Work with a modern tech stack and gain hands-on experience in real production services.
• Receive mentorship from experienced backend engineers.
• Grow in a collaborative environment while learning agile software development practices.
• Understand billing and payments systems including Apple Pay and Google Pay.

What We're Looking For:

• Currently pursuing a degree in Computer Science, Engineering, or related field
• Strong analytical and problem-solving skills with attention to detail
• Familiarity with financial systems, billing processes, or accounting principles
• Experience with SQL databases and data analysis
• Basic understanding of API testing and system integration concepts
• Experience with testing methodologies and documentation practices is a plus
• Familiarity with payment processing systems or fintech applications is a plus
• Strong written and verbal communication skills
• Ability to work independently and collaborate effectively with technical and business teams
• Interest in financial technology and billing system operations
• Minimum GPA 3.0

Good-Faith Salary Range:

The hourly rate for this position is between $20-24 per hour. Factors which may affect starting pay within this range may include geography/market, skills, education, experience, and other qualifications of the successful candidate.

Zipcar is the world's leading car-sharing network, found in urban areas and university campuses in more than 500 cities and towns. Our team is smart, creative, and fun, and we're driven by a mission – to enable simple and responsible urban living.

Being a Zipcar member gives you easy access to a car nearby without all the cost and hassle of owning one. Founded in 2000, Zipcar disrupted the traditional model of car ownership and independent studies show that Zipcar's model of car sharing is proven to reduce vehicle ownership, freeing up more city space for people. Zipcar provides members with socially responsible, sustainable mobility options that support the global environment, their communities, and city livability.

Zipcar is a subsidiary of Avis Budget Group, Inc. (Nasdaq: CAR), a leading global provider of mobility solutions.

We encourage Zipsters to bring their whole selves to work - unique perspectives, personal experiences, backgrounds, and however they identify. We are proud to be an equal opportunity employer – M/F/D/V.