Backend Engineer

2 days ago

Greater Kolkata Area, India Procallisto Solutions Full time US$ 1,50,000 - US$ 2,00,000 per year

Key Responsibilities

  • Architect and implement scalable, low-latency backend systems for realtime communication (e.g., chat, messaging, streaming).
  • Design distributed systems with fault tolerance, consistency, and performance in mind.
  • Own technical decision-making for the backend including database design, APIs, security, and deployment strategies.
  • Lead and mentor backend developers (if any).
  • As a contract engineer, youll engage with a high-ownership engineering team to deliver next-generation services in a microservices architecture.
  • Youll take end-to-end technical ownership within the scope of your contractunderstanding business requirements, contributing to solutioning, and supporting production deployment and monitoring.
  • Work closely with DevOps to ensure CI/CD pipelines, observability, and cloud infrastructure align with backend needs.
  • Write clean, well-tested, production-grade code (preferably in Kotlin or Java).
  • Optimize system throughput and latency at scale, with end-user experience in mind.

Required Skills And Experience

  • 4-6+ years of backend development experience with at least 2+ years in a senior or lead role.
  • Proven expertise in designing and implementing distributed systems and microservices.
  • Strong understanding of system design principles CAP theorem, consistency models, partitioning strategies, etc.
  • Experience with real-time communication systems (e.g., chat apps, pub/sub, Web Sockets, messaging queues).
  • Proficient in Kotlin, Java, or similar JVM languages.
  • Solid experience with cloud platforms AWS preferred (EC2, Lambda, S3, Kinesis, RDS, DynamoDB, etc.).
  • Deep experience with REST APIs, OAuth2, and secure backend communication.
  • Familiar with event-driven architectures, caching (Redis/Memcached), and database modeling (SQL + NoSQL).
  • Comfortable working with infrastructure-as-code (Terraform, CloudFormation), Docker, and CI/CD pipelines.

Preferred Qualifications

  • Prior startup experience or greenfield system build-out s.
  • Exposure to healthcare systems, HIPAA compliance, or IoT ecosystems.
  • Experience with chat frameworks, SSE, WebRTC, or video streaming protocols will be added advantage
  • Experience with observability tools like Prometheus, Grafana, Open Telemetry, etc.

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