Sr. Backend Engineer

Sunbit • New York, NY

8h • Hybrid

About The Position

Sunbit builds financial technology for real life, using an AI-native platform to provide personalized offers, transparent terms, and no added consumer fees for pay-over-time options in various service centers, and a no-fee credit experience with the Sunbit Credit Card. The company is guided by people-centered values: Serve Others Before Self, Include Always, Connect Genuinely, Innovate for Good. Their AI infrastructure powers instant decisioning, streamlines fraud checks, and enables personalized offers at scale, resulting in high approval rates (90%+ in auto service, 85%+ in dental) with zero consumer fee-based revenue. Sunbit is available across a nationwide network of 30,000+ locations.

This role is for a Sr Backend Engineer to join the team responsible for designing, building, and maintaining the core platform supporting call center operations, including the agent desktop for day-to-day customer interactions. The solutions developed directly impact agent efficiency in assisting customers and resolving issues. The engineer will also contribute to improving operational efficiency through automation, AI, and intelligent workflows, developing tools, integrating systems, and introducing AI-powered capabilities to enhance both agent and customer experience. This is a high-impact opportunity to tackle complex product and platform challenges in a fast-paced environment, shaping the technology for Sunbit’s customer success organization.

Requirements

• 5+ years of experience in software engineering
• Bachelor’s degree in Computer Science or a related field.
• Experience in Kotlin, Java, or Scala with hands-on experience.
• Experience in the Spring Framework.
• Proficient in both relational (e.g., MySQL) and non-relational databases (e.g., MongoDB).
• Proficiency in micro-service architecture
• Familiarity with message queue technologies such as Kafka, SQS, RabbitMQ, or similar.
• Strong problem-solving skills, capable of meeting technical challenges head-on.
• Experience with backend software development.
• A passion for learning, constantly staying up to date with industry trends and technology advancements.
• Resourceful, self-motivated, and capable of working independently.

Nice To Haves

• Background in fintech is a plus.

Responsibilities

• Design, build, and evolve the Customer Success agent desktop, the core platform used by our call center to support customers.
• Develop tools, workflows, and integrations that connect multiple systems used by our Customer Success organization.
• Improve agent productivity and operational efficiency through automation, smart workflows, and AI-driven capabilities.
• Work on high-impact product and platform challenges, solving real operational problems at scale.
• Collaborate closely with Product, Customer Success, Product lines, and Operations teams to design solutions that improve both agent and customer experience.
• Ensure systems are reliable, scalable, and maintainable, supporting a fast-growing operational environment.
• Write clean, high-quality code, with strong testing and observability practices.
• Take ownership of features end-to-end, from design and architecture through development and production deployment.
• Contribute to a strong engineering culture by sharing ideas, improving processes, and supporting teammates.

Benefits

• Competitive pay and stock options
• Unlimited PTO
• Health Insurance options including Medical, Dental, Vision, Life, EAP, FSA, & Maternity Leave
• Newly added HSA and Pet Insurance
• 401K Plan with Matching
• Cell Phone Stipend
• Team based strategic planning + Team owned deliverables

What This Job Offers

• Job Type: Full-time
• Career Level: Senior