01/05/2026 updated

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100 % available

Senior Backend Developer (Mobile & Real-Time Systems)

USA
Only remote
Bachelor's Degree in Computer Science
USA
Only remote
Bachelor's Degree in Computer Science

Profile attachments

Caleb Sinclair - Senior Backend Developer Resume.pdf

Application Programming Interfaces (APIs)Amazon Web ServicesArchitectureSoftware as a ServiceCloud ComputingConcurrent ComputingDebuggingLinuxDevOpsDistributed SystemsDjangoIncident ResponseFault ToleranceInfrastructure ManagementPython (Programming Language)PostgreSQLPerformance TuningQuery OptimizationRedisPrometheusSystems DesignWebSocketWorkflowsLifecycle ManagementData Storage TechnologiesReal Time SystemsDelivery PipelineGrafanaBackendGitFastAPISentryProduction MonitoringApi DesignDatabase AdministrationDocker
Backend Architecture & System Design
Expertise in designing and building scalable, production-grade backend systems for consumer and SaaS products with focus on real-time services and distributed systems

Real-Time Services & WebSockets
Advanced knowledge in implementing REST and WebSocket APIs for user interaction, live updates, session-based workflows and real-time backend components

Performance Optimization & Monitoring
Proficiency in developing performance-sensitive services, production monitoring, debugging, incident response, and performance tuning for high-concurrency applications

Programming Languages
Proficiency in Go and Python for backend development and concurrent processing

Frameworks & APIs
Experience with Django, FastAPI for building robust backend systems and API design including REST and async APIs

Database Management
Expertise in PostgreSQL and Redis for data storage, schema design, query optimization and caching strategies

Cloud & Infrastructure
Knowledge of Docker, Linux, Git, CI/CD pipelines for deployment and infrastructure management

Observability & DevOps
Experience with AWS, Prometheus, Grafana, Sentry for cloud deployments, monitoring and observability

Distributed Systems
Expertise in building scalable distributed systems, handling concurrent users, session lifecycle management and fault tolerance

Languages

EnglishNative speaker

Project history

Senior Backend Engineer

Remote
Designed and built scalable backend services supporting high-concurrency applications with real-time features. Implemented REST and WebSocket APIs for user interaction, live updates, and session-based workflows. Developed performance-sensitive services in Go for concurrent processing and low-latency communication. Built and maintained Python-based backend systems using Django and FastAPI, including async workflows and background processing. Designed PostgreSQL schemas, optimized queries, and implemented caching strategies using Redis. Owned production systems end to end, including deployments, monitoring, incident response, and performance tuning. Integrated authentication, authorization, and payment-related workflows. Collaborated closely with frontend, product, and design teams to deliver features that improved user engagement and retention.

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