Senior Site Reliability Engineer

Job Description

Proudly voted a Great Place to Work, we are a dynamic startup in the SaaS space that is revolutionizing the way businesses communicate. Our team is made up of 500 energetic and passionate Unifones who are dedicated to delivering the best possible experience to 5000+ customer-centric companies.

We pride ourselves on our fun and collaborative work environment, where creativity and new ideas are constantly encouraged. As shareholders in the business, we’re so much more than a group of passionate communicators. We are Unifones. Join our team and be a part of something big!

Meet the team!

Our Engineering team is responsible for designing, developing, and maintaining the systems and technologies that drive Unifonic’s solutions. We work closely with other departments to ensure our products and services meet the needs of our customers. If you are passionate about technology and are excited about working on cutting-edge communication and engagement solutions, we want you on our team.

As a Senior Site Reliability Engineer you will be responsible for enhancing system reliability, scalability, and resilience. As part of our elite SRE team, you'll drive continuous improvement across our cloud infrastructure and ensure the consistent high performance of our distributed messaging platforms.

Help Us Shape The Future Of Communication By

Production Operations and Incident Management:

• Owning the reliability, uptime, and scalability of critical production services.
• Participating in the on-call rotation to respond to incidents, troubleshoot live production issues, and lead post-incident analysis.
• Building robust operational playbooks, escalation paths, and improve Mean Time to Detect (MTTD) and Mean Time to Resolve (MTTR).
• Ensuring operational excellence by proactively detecting and addressing reliability risks through SLO monitoring, chaos testing, and capacity planning.
• Automating operational tasks to minimize human intervention.
  
  

Cloud Architecture & Management

• Architecting, implementing, and managing infrastructure across AWS, Oracle Cloud Infrastructure (OCI), and OpenStack environments.
• Optimizing cloud resources to balance performance, security, and cost-efficiency.
  
  

Kubernetes & Container Orchestration:

• Managing Kubernetes clusters (EKS, OKE, Rancher RKE2), ensuring scalability, availability, and robust performance.
• Deploying advanced containerization strategies and troubleshooting.
  
  

Messaging, Caching & Queuing Systems

• Managing and optimizing high-performance messaging and caching systems including Kafka, RabbitMQ, and Redis.
• Ensuring efficient, reliable message and data delivery critical to Unifonic's SMS and distributed systems.
  
  

Database Reliability Engineering

• Managing and optimizing production-grade MySQL and PostgreSQL databases.
• Ensuring high availability, performance tuning, backups, and recovery processes for critical databases.
  
  

Disaster Recovery & Business Continuity:

• Leading the planning and execution of comprehensive disaster recovery strategies.
• Developing and maintaining robust business continuity plans.
  
  

Monitoring, Observability & Incident Management:

• Implementing advanced observability solutions (Prometheus, Grafana, CloudWatch).
• Defining, measuring, and enforcing Service Level Objectives (SLOs) and Service Level Indicators (SLIs) in alignment with SRE best practices.
• Proactively identifying issues, minimizing downtime, and enhancing system transparency.
  
  

Automation, CI/CD, and Infrastructure-as-Code:

• Driving automation initiatives using Terraform, Helm, Jenkins, Tekton or GitLab CI/CD.
• Streamlining deployment pipelines and reduce manual intervention through innovative automation.
  
  

Security & Compliance

• Integrating security best practices into infrastructure and application layers.
• Performing regular audits ensuring compliance and robust security posture.
  
  

Team Collaboration & Technical Leadership

• Collaborating with cross-functional teams (engineering, product, QA) to foster SRE culture.
• Mentoring junior engineers, enhancing team capabilities and promoting knowledge sharing.
  
  

Job requirements

What You'll Bring

• Bachelor's or Master's degree in Computer Science, Engineering, or a related technical field.
• 8+ years of hands-on production experience in SRE, DevOps, or cloud engineering roles.
• Strong expertise in AWS, OCI, OpenStack environments.
• Deep understanding of Kubernetes ecosystems (EKS, OKE, Rancher RKE2).
• Proven experience with Kafka, RabbitMQ, Redis, and distributed messaging and caching systems.
• Solid experience managing MySQL and PostgreSQL in production environments.
• Expert-level scripting and automation skills (Python, Bash, Go).
• Advanced proficiency with Helm, Terraform, and modern CI/CD toolchains.
• Demonstrable experience with Linux system administration and troubleshooting.
  
  

As a Unifone you’ll receive a range of benefits:

• Competitive salary and bonus
• Unifonic share scheme (we are all owners!)
• 30 holiday days after the first anniversary
• Your Birthday off!
• Spend up to 25 days per year working from anywhere in the world!
• Paid leave and assistance for new parents
• LinkedIn learning license