Ubidex

Ubidex is seeking a Senior DevOps Engineer to join our team on a part-time basis and support our on-premise infrastructure, including multiple environments and services for a large-scale adtech product.

Responsibilities:

• Managing and maintaining Linux-based systems, optimizing and troubleshooting infrastructure (networks, databases, docker swarm clusters).
• Design, implement, and manage Infrastructure as Code solutions for our microservice architecture.
• Respond to incidents by diagnosing performance issues, outages, or unexpected behavior, and work towards quick resolutions with a root-cause analysis.
• Analyze system performance metrics and bottlenecks to fine-tune services for maximum efficiency and uptime.
• Be a part of the critical path in a fast-growing project's development and delivery processes.

Requirements:
 

• Experience with Linux(Debian / Ubuntu).
• Proficiency in Python for automation and scripting.
• Solid understanding of Docker and container orchestration systems (k8s, swarm).
• Solid understanding of networks (routing, proxy, load balancing, dns, bgp).
• Experience with maintaining high-load systems(100k+ RPS), and kernel tuning.
• Experience with monitoring and logging tools to maintain system health and performance.
• Profound understanding of configuration management tools, especially Ansible.
• Experience with DBs (replication, HA, performance tuning) - PostgreSQL, Redis, ClickHouse, Aerospike.
• Experience with CI/CD tools, specifically Gitlab.
• Excellent problem-solving skills and the ability to work independently or as part of a team.

Nice to have:
 

• Hands-on expertise in maintaining distributed storage systems, like S3(Minio).

• Hands-on expertise in Cloud Platform (GCP, AWS).

   

Product stack:
    

• On-premise, virtualisation and containerisation: Docker, Swarm
• Logs and monitoring: Prometheus, Loki, Grafana
• CI/CD: GitLab, Ansible
• DB: PostgreSQL, Redis, ClickHouse, Aerospike
• Storage: minio
• Programming languages: Golang, JS / nodejs
• Web: nginx, traefik, cloudflare

Ubidex is seeking a highly skilled Backend Software Engineer to join our team and contribute to the development of a large-scale SaaS platform. In this role, you will be responsible for designing and implementing architectural solutions to ensure high performance and efficiency in our platform for retargeting advertising campaigns and analytics.

Required Skills and Experience:

• 5+ years of experience in backend development in total;
• 3+ years of experience with Go development; capable of building and maintaining high-load backend systems;
• Experience with Linux (Debian / Ubuntu);
• Solid understanding of Docker and container orchestration systems (k8s, swarm);
• Experience with PostgreSQL;
• Experience with In-memory storage (Redis, Aerospike);
• Experience with distributed systems and high-load services;
• Experience with Microservices (API, patterns, background processing);
• Experience in developing REST API;
• Solid understanding of KISS, DRY, SOLID principles and design patterns;
• Practical experience with event-driven development patterns;
• Experience with Ansible and CI/CD tools like Gitlab CI;
• Experience with monitoring and logging tools and performance tuning;
• Fast learner with a strong desire to continually acquire new knowledge;

Nice to have:

• Experience with AdTech vertical;
• Experience with ClickHouse;
• Experience with NodeJs;
• Experience with designing GraphQL and gRPC API;
• Experience with message brokers like RabbitMQ, Apache Kafka, NATs;
• Experience with scripting languages like Python, Bash;

Responsibilities:

• Build high-load (500k+ RPS) distributed system using Golang;
• Design and implement backend features from conception through to deployment;
• Analyze system performance metrics and bottlenecks to fine-tune services for maximum efficiency;
• Work closely with team to deliver high-quality features and resolve issues;
• Review code and provide feedback to ensure best practices (e.g., style guidelines, accuracy, testability, and efficiency);
• Define and implement testing strategies, including unit testing, integration testing, and performance testing, to ensure the reliability of the system;
• Stay updated on the latest technologies and tools relevant to the project, and big data processing, making informed decisions on technology adoption
• Be a part of the critical path in a fast-growing project's development and delivery processes.

Product stack:

• On-premise: Docker, Swarm
• Programming languages: Golang, JavaScript / Node.js
• DB: PostgreSQL, Redis, ClickHouse, Aerospike, Mongo
• Monitoring: Prometheus, Loki, Grafana
• CI/CD: GitLab, Ansible
• Storage: S3(minio)
• Web: nginx, traefik, cloudflare