Backend Engineer Kotlin

What We Do at Onsights

Onsights is a venture-backed AI startup focused on bringing e-commerce analytics to brick-and-mortar mall operators, retailers and shopping centers. We are tackling a $17 trillion market by building the world’s most accurate location‑intelligence solution that helps our customers understand the behavior of every visitor to their location: where they go, what they do and most importantly why.

Onsights’ patented AI technology has been developed over the past five years by a world‑class team with backgrounds in AI, data, hardware, enterprise software and gaming. We have successfully deployed solutions to government agencies and are seeing unprecedented interest in our solution from large enterprise customers. Onsights is backed by leading investors and supported by advisors in the commercial real estate space, including Gula Tech Adventures, New North Ventures and Scout Ventures.

Onsights is looking for curious minded professionals who are passionate about developing themselves in a collaborative team setting where individual strengths are valued and utilized. We are a culturally and geographically diverse team, with approximately 25 team members across five US states and three countries.

Onsights is an AI startup bringing advanced e-commerce analytics to brick-and-mortar retail. We’re looking for a remote, full‑time B2B Senior Backend Engineer with strong backend skills and B2‑level English. You’ll help design, build, and scale our core systems, working closely with Dev Ops, frontend, and data science teams to deliver high‑performance data collection and analytics platforms.

• Backend APIs in Kotlin using Spring Framework
• Scalable services for data ingestion and processing
• SQL/No
  
  SQL databases (performance & reliability)
• Integrations with internal and external systems
• Security, stability, and scalability of our platforms
• Code reviews and mentoring junior engineers

• 75% Backend: Kotlin, Spring
• 25% Databases: SQL/No
  
  SQL, optimization, performance
• Plus Python, Docker, Shell, AWS (EC2, S3, SQS, Event Bridge)

• 6+ years of software engineering experience, with at least 4 years focused on programming in Kotlin or Java
• Experience with the Spring framework, in particular Spring Boot
• Proficiency in Kotlin and SQL
• Hands‑on experience with the development of backend services using the AWS ecosystem
• Experience with any messaging/data bus/queueing system (Kafka, Rabbit
  
  MQ, SQS, Event Bridge, etc.)
• Experience with modern coding tools like Git Hub Copilot
• Proven ability to design and lead technical initiatives
• English at B2 level

• Expertise in media streaming technologies, services, protocols, and formats
• Experience with Dagster or other data orchestration/pipeline tool
• Experience developing solutions in/for the e-commerce or retail industries
• Experience working with 3D point cloud data
• Experience working at a SaaS startup

• Competitive compensation: $45 - $55/hr
• Flexible working hours and 100% remote work
• Team member referral bonus
• Opportunity to work with a team of creative, motivated, and fun team members!
• Innovative projects at the intersection of AI, data, and retail

If you think you have what it takes to fulfill this opportunity, but don’t necessarily check every box, please still connect with us l free to submit a cover letter with your application so we can get to know you better!