Senior Software Engineer - Wave

At Wave, we help small businesses to thrive so the heart of our communities beats stronger. We work in an environment buzzing with creative energy and inspiration. No matter where you are or how you get the job done, you have what you need to be successful and connected. The mark of true success at Wave is the ability to be bold, learn quickly and share your knowledge generously.

Senior Software Engineers work in cross-functional teams alongside Engineers, Product Managers and Designers to bring their engineering skills to bear on exciting business challenges. They work collaboratively to solve tough problems in delivering world-class financial products to our customers at scale with a wide variety of technologies and help investigate new ones as we are constantly striving to keep our technology choices up to date.

Here's How You Make an Impact:

• Writing clear, concise, elegant, and well-tested code.
• Working as part of a small, agile, integrated product team that’s focused on continual improvement of their skills and helping each other learn new things.
• Translating complex, cross-system challenges into well-defined execution plans.
• Delivering code that goes beyond what is strictly assigned.
• Taking responsibility for monitoring or alerts needed to support and maintain new initiatives post-launch.
• Having a substantial impact on the entire team’s pace and quality of deliverables.
• Assisting other team members to solve problems and develop their own skills.
• Providing valuable technical insights into the work, such as creating a useful abstraction layer around multiple specific implementations or applying advanced software design principles to a novel task.
• Substantially reducing friction for the rest of the team through contributions like delivering a particularly difficult and useful refactor.
• Taking complete ownership of major initiatives or complex tasks from definition to delivery.
• Working with external stakeholders to understand end goals when required.
• Creating delivery plans for entire initiatives.
• Providing a level of expertise and skill that impacts software delivery quality outside the immediate team.

You Thrive Here By Possessing the Following:

• 5+ years building production web applications, including backend services in Python/Django (Ruby/Rails a strong plus).
• Degree in Computer Science or related field.
• Frontend experience with React and TypeScript (GraphQL/Apollo a plus).
• Experience integrating with third-party financial or payroll APIs: webhooks, pagination, idempotency, retries and keeping data in sync.
• Strong grasp of data modelling and source-of-truth design across multiple services.
• Experience finding and fixing performance bottlenecks.
• Hands-on experience with observability tools like Datadog (metrics, traces, monitors), monitors-as-code (Terraform), and reducing alert noise.
• Experience shipping changes with feature flags, staged rollouts, and using analytics (e.g., Amplitude) to judge release success.
• Ability to write clear technical docs, such as design docs, runbooks, and investigation write-ups.
• Nice to have: Payroll, tax, or fintech domain knowledge; event-driven systems (Kafka); careful handling of PII.
• Occasional requirement to be on-call outside of standard hours.