Senior Software Engineer (Payments)

PayIt (View all Jobs)

Philadelphia, Pennsylvania

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Interview Process

1. Interns/Junior Candidates receive 1hr HackerRank take-home test (non-LeetCode). 2. No CS Trivia questions in interviews, collaborative pairing exercise

Programming Languages Mentioned

JavaScript, Java, SQL


PayIt is a fast-growing GovTech company on a mission to modernize how residents interact and transact with government, improving the customer experience and helping our client agencies become more efficient. Our easy-to-implement platform consolidates hundreds of services and payments into one connected experience and enables our clients to drive resident trust, collect revenue quickly, and redeploy their staff to more important challenges. 

This innovative approach to government service delivery has garnered significant recognition in both the public and private sectors: 

  • GovTech 100 (2017-2023)
  • Fast Company Innovation in Design Award (2019)
  • LocalSmart Awards (2020)
  • Smart 50 Award (2021)

Our culture welcomes people who exhibit what we call “PayIt DNA”: High integrity, drive, grit, high aptitude, and team orientation. We are collaborative and passionate about the work we do to improve the lives of our government clients and the end users they serve. We have ambitious scaling goals, and we look for team members who are ready to roll up their sleeves, solve problems, and find new opportunities to win with our clients. And we have a lot of fun together.

As a Senior Software Engineer on the Payments team, you will be responsible for designing and building broader Payments systems that move money for PayIt’s constituents and clients.  You will be deeply involved in the technical details of building highly available services that millions of North Americans depend on every day. You will work with our partners to rapidly build new capabilities for our platforms.

Essential Job Functions:

  • Design, guide and vet systems designs for distributed systems with a mindset for performance, encryption, security, scalability, and availability within a broader set of our platform. Write product or system development code to solve ambiguous problems.
  • Provide technical leadership and mentoring to engineers within the team. Review code developed by other engineers and provide feedback to ensure best practices (e.g., style guidelines, checking code in, accuracy, testability, and efficiency).
  • Contribute to existing documentation or educational content and adapt content based on product/program updates and user feedback.
  • Triage product or system issues and debug/track/resolve by analyzing the sources of issues and the impact on hardware, network, or service operations and quality.
  • Articulate and communicate design and development processes to technical and non-technical team members
  • Own and drive development and delivery of features for our payment processing team.
  • Provide and receive design and implementation evaluations and improve per iteration.

What You’ll Need for this role (job requirements):

  • 8+ years experience working on distributed software systems while providing technical structure to teams and working closely with management and stakeholders to define strategic roadmaps.
  • Experience architecting and developing solutions to ambiguous problems with significant impact.
  • Familiar with the technologies, trade-offs, and design patterns emerging in web services based technologies.
  • Experience with asynchronous programming patterns.
  • Experience with relational databases and schema design.
  • Interest in innovating within the global payments industry.
  • Experience working with containers, orchestration tools, AWS, and asynchronous services within AWS.
  • Rigor in automated testing, code quality, and engineering best practices.

Bonus Points For:

  • Bonus points for experience with financial, accounting or payments systems.
  • Bonus point for experience working with large and complex datasets and/or other distributed data processing systems.
  • Passionate about building products and services that will be used by large number of citizens that will handle a large volume of transactions with increasing complexities.
  • Experience working with tokenization, PKI, and public and/or private key exchange.

What Our Engineers Say:

  • Engineers come work with us because our problems are interesting to solve, come with complex challenges, and impact all of our lives.
  • Our tech stack is cutting-edge and cloud-native. We use modern languages like Java 13 and some functional programming libraries and JavaScript (Node.JS, React, React Native) as well as some on the front-end. We build REST based microservices on top of SQL and NoSQL databases, running in Docker containers orchestrated by Kubernetes.

Why Work For Us:

  • Our most important resource is our people. We value your feedback and have a unique environment where collaboration and bottom-up feedback about the problems we are solving is critical to our daily success.
  • Saving someone’s day is a rewarding way to spend yours. We tackle complex challenges that are interesting to solve, and directly impact the lives of our neighbors, friends and ourselves.
  • We know how to have fun and work toward something bigger than ourselves. 
  • Competitive salaries along with an excellent benefits package. 
  • Flexible and friendly work environment. We offered flexible working arrangements long before a global pandemic forced other companies to adapt. 
  • We believe our culture permeates throughout our product and service, so it’s one of a customer-first mindset.
  • We’ll provide all the resources you need to do your best work.

What We Care About:

High aptitude, high integrity people who are great communicators and want to be part of a growing team. We’re about openness, integrity, accessibility and great communication.

The usability of our products, sharing of ideas across teams, and commitment to the cities, counties, and states we serve are values.


Commitment to Equal Opportunity

PayIt is committed to diversity in its workforce and is proud to be an Equal Opportunity Employer.  All qualified applicants will receive consideration for employment without regard to race, color, religion, creed, gender, national origin, age, disability, veteran status, sex, gender expression or identity, sexual orientation or any other basis protected by applicable law. 

PayIt is also committed to providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation because of a disability for any part of the employment process, please send an email to the People Operations Team and let us know the nature of your request and your contact information.  


NOTE: U.S. Citizens and all those authorized to work for any employer in the U.S. are encouraged to apply. We are unable to provide sponsorship in the United States at this time. Canadian Citizens and those authorized to work in Canada without sponsorship are also encouraged to apply.


To all recruitment agencies: PayIt does not accept agency resumes. Please do not forward resumes to our careers’ alias, PayIt employees or any other company location. PayIt is not responsible for any fees related to unsolicited resumes.


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Within the parameters of this position, ensure the confidentiality, integrity, and availability, and exercise due care of, company, client, and citizen data that is stored, processed, and transmitted by and for PayIt, as outlined in PayIt’s Business Code of Conduct and Information Security Policies.

Please mention No Whiteboard if you apply!
I'm a one-man team looking to improve tech interviews, and could use any support! 😄


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