AdCounty - Senior Software Engineer - System Architecture

Overview

Were looking for a Senior Software Engineer with deep expertise in backend development and large-scale system architecture. If you love building high-QPS, low-latency systems and taking ownership of critical backend services, this role is for you.

Youll collaborate closely with Product, DevOps, and Data teams to design and deliver high-performance, reliable, and secure systems at scale.

What Youll Do

Backend Development :

• Design and develop scalable backend services using Node.js / Java / Go / Python
• Build high-performance RESTful APIs / gRPC services
• Write clean, maintainable, and testable code
  
  

• Design distributed, fault-tolerant systems for high-traffic platforms
• Handle high QPS, low latency, and horizontal scalability
• Drive architecture decisions around microservices, event-driven systems, and async processing
  
  

• Optimize systems for throughput, latency, and memory efficiency
• Design caching layers using Redis / Memcached
• Implement rate limiting, load balancing, and traffic shaping
  
  

• Work with SQL (MySQL/Postgres) and NoSQL (MongoDB, Cassandra, DynamoDB)
• Handle high-write and read-heavy workloads
• Design efficient data models, indexing, partitioning, and sharding
  
  

• Build highly available systems with HA and disaster recovery
• Set up monitoring, logging, and alerting (Prometheus, Grafana, ELK)
• Ensure security best practices : authentication, encryption, and access control
  
  

• Hands-on with AWS / GCP / Azure
• Containerization using Docker & Kubernetes
• Work with CI/CD pipelines and infrastructure automation
  
  

• Mentor junior engineers and conduct code reviews
• Collaborate across teams to deliver scalable solutions
• Take end-to-end ownership of backend services and production issues
  
  

• 7+ years of backend engineering experience
• Strong expertise in system design for high-QPS systems
• Hands-on experience with :
• Distributed systems & microservices
• Caching and load balancing
• Message queues (Kafka, RabbitMQ, SQS)
• Solid understanding of :
• Networking fundamentals
• Concurrency & multithreading
• CAP theorem & eventual consistency
• Experience working with production-scale systems
  
  

• Experience in AdTech, FinTech, or real-time platforms
• Exposure to ClickHouse, Cassandra, BigQuery
• Experience with event streaming and real-time analytics
• Knowledge of OpenRTB, MMPs, or high-volume data pipelines
  
  

• Opportunity to work on high-scale, real-world systems
• High ownership and strong architectural influence
• Competitive salary and growth opportunities
• A collaborative, engineering-driven culture
  
  

(ref:hirist.tech)