Backend Software Engineer (Boston) - Lendbuzz

Job Title: Backend Software Engineer (Boston)
Job Location: Boston, MA
Job Listing URL: https://jobs.lever.co/lendbuzz/80e8dbf7-d7ea-468d-af0e-1f15a4b9f5c5
Job Description: At Lendbuzz, we believe financial opportunity should be more personalized and fair. We develop innovative technologies that provide underserved and overlooked borrowers with better access to credit. From our employees to our dealers, partners, and borrowers, we’ve built a company and a culture around a resolute belief in the promise and power of diversity. We value independent and critical thinking.

We're looking for an experienced Software Engineer to join our Backend team. In this role, you'll help design and develop backend systems, work on system architecture, and build event-driven microservices. You'll also collaborate on API integrations and contribute to products that impact thousands of users. The ideal candidate has 3+ years of backend development experience and is skilled in PostgreSQL and microservices architecture.
Key Responsibilities:
Develop and maintain core backend services within Lendbuzz’s microservices infrastructure in a fast-paced, high-ownership environment
Drive cross-functional impact by building scalable infrastructure used horizontally across multiple product teams
Build deep technical and business understanding, resisting specialization silos to stay adaptable and valuable across domains
Partner with engineers to architect system frameworks for new product and platform initiatives
Research, prototype, and implement tools that enhance backend service performance and reliability
Upgrade and maintain microservice ecosystems, including database infrastructure and deployment workflows
Design and develop internal tooling while ensuring clean integration with third-party APIs and services
Contribute to the lifecycle of customer-facing products—expansion, testing, release—ensuring stability and measurable impact
Key Requirements:
3+ years of hands-on backend development experience in production environments
Bachelor's degree in Computer Science or a related technical field
Familiarity with Python is a plus—especially if you’ve shipped production code using it
Strong proficiency with relational databases, particularly PostgreSQL
Experience designing, building, and maintaining microservices, ideally in Dockerized environments (e.g., AWS ECS, EKS)
Solid understanding of RESTful API design principles and asynchronous communication using message brokers like RabbitMQ or Kafka
Proven ability to write and review technical design documents and implement scalable APIs in service-oriented architectures