Lead Site Reliability Engineer

Overview

Lead Site Reliability Engineer role at Thales in Bangalore, focused on measurement, reliability, incident response and platform continuity for cloud, web and CDN scale infrastructure.

What you'll do

• Apply SRE core tenets of measurement (SLI/SLO/SLA), eliminate toil, and reliability modeling
• Enable and educate development teams on industry best practice design patterns, ways of working and operational knowledge to ensure platform continuity
• Develop and architect solutions to infrastructure and operational aspects of new products and feature sets
• Assist with go/no go preplanning, verification/validation, and review of existing and new product/services
• Proactively analyze data and test the integrity of network/systems to ensure production applications and services are operating optimally
• Work within development teams to troubleshoot and resolve business affecting issues
• Handle escalations, incident response, RCA, and blameless postmortems
• Participate in on-call rotation

What you'll need

• At least 7+ years of professional experience within a cloud/web/CDN scale infrastructure
• Expert Linux troubleshooting in production: isolate CPU vs memory vs IO vs network bottlenecks quickly; hands-on with top/htop, vmstat, iostat, sar, pidstat, ss, lsof, dmesg, and journald/systemd
• Strong networking fundamentals and practical debugging: deep understanding of TCP/UDP and routing basics; can prove issues using curl, dig, mtr/traceroute, nc, and tcpdump
• DNS and HTTP(S) clarity: understands resolver vs authoritative, TTL/caching, SERVFAIL/NXDOMAIN patterns; knows HTTP 502/503/504 meaning and common LB/proxy failure modes
• TLS/SSL proficiency: understands certificate chain, expiry, SNI mismatch, handshake failures; can validate quickly using openssl s_client and interpret output
• Production mindset: prioritizes mitigation first (rollback/disable/route around), then RCA; writes clear runbooks and automates repeat fixes to reduce toil
• Expert knowledge of Linux systems, network programming and protocols TCP, UDP, DNS, TLS/SSL, HTTP
• Implement software engineering best practices/standards and software development life cycle
• Experience in developing software, troubleshooting, and monitoring large scale distributed systems
• Experience analyzing and building data telemetry, modeling, pipelines, UI visualization
• Working knowledge and experience of Agile software development methodologies
• A strong team player who is accountable towards business urgency
• Ability to stay organized in a multi-tasking environment
• Self-starter personality

Nice to have

• Experience with BGP and Anycast routing
• Experience with DevOps principles and concepts such as Infrastructure as Code (Ansible/Saltstack), CI/CD (Gitlab, Jenkins, Git), monitoring and visualization (Prometheus, Grafana)
• Experience with big data technologies such as NoSQL/RDBMS, Redis, ElasticSearch, Kafka
• Experience with containers and container management (Docker, Kubernetes)

Details

• Location: Bangalore - Indraprastha, India