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Systems Optimization Leader

3 weeks ago

Singapore beBeeTechnical Full time

Technical Manager

We are seeking a highly experienced Project Technical Lead to work onsite on driving major enhancements and optimizations for our mission-critical AWS platform built on a complex microservices architecture, processing millions of requests per day.

As a key member of our team, you will leverage your experience to assess, design, and guide refactoring of key backend components, ensuring performance, scalability, and reliability.

Key Responsibilities:

  • Assess current applications, integrations, and database architectures to identify areas for optimization.
  • Design and document target solutions with detailed artifacts: system designs, component/ER/sequence diagrams, API specifications.
  • Lead and execute major enhancements/refactoring for core backend applications (Java) focusing on performance, scalability, and maintainability.
  • Propose optimizations for application logging to support troubleshooting and operations.
  • Support maintenance teams in resolving critical issues, providing rapid root-cause analysis and workarounds.
  • Collaborate with multiple teams (frontend, backend, mobile, external partners) to ensure end-to-end integration.
  • Conduct deep performance analysis of Java applications: threading, concurrency, memory management, high throughput (~5-10K RPS).
  • Drive database performance initiatives: schema review, query tuning, and data access optimization.
  • Work with DevOps teams to integrate CI/CD pipelines and implement monitoring/alerting strategies.
  • Clearly communicate technical solutions and design decisions to stakeholders.

Required Skills & Competencies:

  • Proven experience with large-scale, mission-critical systems on microservices architecture (preferably AWS).
  • Extensive expertise in Java & SpringBoot, including multithreading, concurrency, memory management, race condition handling, high throughput systems.
  • Experience supporting systems with millions of requests/day (~5-10K RPS).
  • Familiarity with NodeJS, Kotlin, Swift, ReactJS.
  • Strong background in database design & optimization (Postgres, Mongo Atlas, Oracle Cloud DB).
  • Hands-on experience with integration patterns: REST APIs, Kafka, AWS SQS/SNS, Firebase, Apple APNS.
  • Skilled with DevOps tools: Jira, Bitbucket, AWS Code Commit, Jenkins, Tekton Pipelines, Bitbucket Pipelines.
  • Experience in system observability & monitoring: AWS CloudWatch, Prometheus, Grafana, New Relic, True Watch, Guance, Firebase.

Core Competencies:

  • Strong ability to drive technical assessments, architecture redesign, and large-scale optimizations.
  • Excellent documentation skills: from high-level overviews to detailed specifications.
  • Proven problem-solving skills under tight timeframes for production issues.
  • Confident communicator capable of leading discussions with technical & business stakeholders.
  • Proactive leadership, managing competing priorities in dynamic environments.
  • Collaborative mindset fostering teamwork across diverse teams.

Domain Experience:

  • Taxi Dispatch
  • Retail
  • Billing System