Senior Backend Engineer with AWS

2 weeks ago

Mississauga, Ontario, Canada Epsilon Solutions Ltd. Full time

Senior Backend Engineer with AWS OpenSearch Vector Index DB

Experience 8-12 years

Location Mississauga, Canada

Role Summary

Need a seasoned backend engineer to design implement and operate a semantic search platform on AWS OpenSearch focusing on vector search index designmanagement and highthroughput APIs The role requires strong backend development skills in TypeScript JavaScript andor Python

AWS OpenSearch Detailed Requirements

Cluster Design Management Expertise in setting up and scaling AWS OpenSearch clusters for high availability and performance shardreplica strategy cluster sizing and resource optimization

Vector Search Implementation Handson experience with kNNHNSW algorithms for semantic search and managing vector indices for embeddingsbased retrieval

Index Database Management Proficiency
in creating and maintaining index templates analyzers tokenizers and custom mappings implement ILM policies for rollover and retention

Query Relevance Tuning Deep knowledge of OpenSearch Query DSL boosting strategies hybrid search BM25 vector synonym handling and multilingual optimization

Data Ingestion Pipelines Build scalable ingestion pipelines for structuredunstructured data and embeddings integrate with streamingbatch frameworks Kafka Kinesis

Security Compliance Configure IAM roles VPC networking encryption atrestintransit and KMS for
key management

Monitoring Observability Implement metrics logs dashboards for cluster health and query performance set up s for anomalies and failures

Backup Disaster Recovery Manage snapshot policies restore procedures and failover strategies

Key Responsibilities

Design and implement vector search and index management in AWS OpenSearch

Develop and maintain backend APIs and services using TypeScript JavaScript and Python

Build scalable ingestion pipelines for documents and embeddings

Ensure performance optimization observability and reliability of search services

Implement security best practices and compliance measures

Collaborate with crossfunctional teams and mentor junior engineers

Required Skills

Strong expertise in AWS OpenSearch including vector search and index management

Backend development experience in TypeScript JavaScript and Python

Knowledge of distributed systems caching strategies and API design

Experience with CICD pipelines and containerization DockerKubernetes

Familiarity with observability tools and performance tuning techniques

Understanding of security practices and AWS ecosystem services

Mandatory Skills:
Python, AWS Lambda

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