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Backend Engineer

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Radix (AZ)

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Location:
Kosovo , Prishtine

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Contract Type:
Not provided

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Salary:

Not provided

Job Description:

Radix is building the most trusted data and analytics platform in multifamily. Joining now means stepping into a place where curiosity wins, ideas move quickly, and your impact shapes an industry. As a Senior Backend Engineer at Radix, you'll design and develop scalable backend systems that power our AI-driven analytics and data-processing pipelines. You'll work on distributed architectures, backend logic, and integrations that support automation, reporting, and intelligent insights across the multifamily space. You'll lead delivery of multi-sprint features, mentor engineers, and shape technical direction for the team.

Job Responsibility:

  • Build and maintain backend services using Node.js, TypeScript, Python, and .NET Core
  • Design APIs, data flows, and messaging systems using MongoDB, MSSQL, Redis, RabbitMQ, and AWS SQS
  • Implement clean, testable architecture using SOLID, CQRS, and DDD principles
  • Integrate AI-based components (LLM APIs, AI data processors, Excel parsers) into backend systems
  • Work with AWS services — Lambda, S3, RDS, and CloudWatch — for deployment, storage, and automation
  • Design resilient, observable services and components
  • perform profiling and optimization
  • automate tests across the pyramid
  • drive defect prevention
  • Facilitate technical discussions and decisions
  • align with PM/Design on scope and trade-offs
  • partner with SRE/Security/Platform to meet SLOs and compliance needs
  • Own end-to-end outcomes for features/services in production, including on-call readiness and incident follow-ups
  • Mentor engineers, raise the bar on code reviews, and introduce patterns and standards adopted by the team
  • Distill complex requirements into coherent designs
  • anticipate failure modes and plan mitigations
  • Author concise design docs and post-mortems
  • communicate trade-offs and decisions to engineers and partners
  • present to management on scope and schedule
  • Use AI tools to enhance code quality, documentation, and automation pipelines

Requirements:

  • 5–8 years of backend experience in production systems with a track record of leading significant deliveries
  • Strong knowledge of API design, asynchronous systems, and microservice architecture
  • Experience with SQL/NoSQL databases, caching, and messaging patterns
  • Hands-on experience with AWS cloud services (Lambda, S3, SQS, ECS, RDS)
  • Understanding of AI/LLM integration and prompt engineering fundamentals
  • Depth in backend development and breadth across the stack
  • performs all work with high quality, bugs are rare
  • unit tests most code
  • Skilled in debugging across the codebase
  • works through ambiguity and creates plans/estimates
  • Fluent with observability (logs, metrics, traces), threat modeling, and production readiness checklists
  • Strong problem-solving skills, ownership, and attention to system design quality
  • Ability to coordinate work spanning multiple components/teams and sequence delivery and dependencies effectively
  • Degree or equivalent experience
  • ongoing training in architecture, cloud, security, and performance engineering
What we offer:
  • Medical, dental and vision coverage designed to support your wellbeing
  • Pre-IPO Equity
  • Performance Bonus
  • Learn From the Best
  • Build Category-Defining Products

Additional Information:

Job Posted:
February 05, 2026

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