Lead Site Reliability Engineer

Thales is hiring a Lead Site Reliability Engineer in Bengaluru, India. Level rates it ; you can apply on Thales.

Level's read on this job

Little AI ●○○○ is how Level rates this role: aI is not part of the work.
Tools and skills the posting cites include Linux, Top and Htop.
Level classifies it as a lead role.
Level lists 3,500+ other open roles at Thales.
The role was posted within the past week.

AI in this role

Lead site reliability engineer to manage cloud infrastructure, ensure system uptime, and automate operations at Thales.

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site-reliability-engineeringcloud-infrastructureincident-responsetroubleshootingautomation

Location: Bangalore - Indraprastha, India

Thales is a global technology leader trusted by governments, institutions, and enterprises to tackle their most demanding challenges. From quantum applications and artificial intelligence to cybersecurity and 6G innovation, our solutions empower critical decisions rooted in human intelligence. Operating at the forefront of aerospace and space, cybersecurity and digital identity, we’re driven by a mission to build a future we can all trust.

Present in India since 1953, Thales is headquartered in Noida and has other operational offices and sites spread across Delhi, Gurugram, Bengaluru and Mumbai, among others. Over 2200 employees are working with Thales and its joint ventures in India. Since the beginning, Thales has been playing an essential role in India’s growth story by sharing its technologies and expertise in Defence, Aerospace and Cyber & Digital sectors. Thales has two engineering competence centres in India - one in Noida focused on Cyber & Digital business, while the one in Bengaluru focuses on hardware, software and systems engineering capabilities for both the civil and defence sectors, serving global needs. The Group has also established an MRO (Maintenance, Repair & Overhaul) facility in Gurugram to provide comprehensive avionics maintenance and repair services to Indian airlines and support the growth of the local aviation industry.

Responsibilities

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
Escalations, incident response, RCA, and blameless postmortem
Participate in on-call rotation

Qualifications

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 + practical debugging: deep understanding of TCP/UDP and routing basics; can prove issues using curl, dig, mtr/traceroute, nc, and tcpdump.
DNS & 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
Experience with BGP and Anycast routing is a plus
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)
Experience analyzing and building data telemetry, modeling, pipelines, UI visualization
Experience in developing software, troubleshooting, and monitoring large scale distributed systems
Implement software engineering best practices/standards and software development life cycle
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

At Thales, we’re committed to fostering a workplace where respect, trust, collaboration, and passion drive everything we do. Here, you’ll feel empowered to bring your best self, thrive in a supportive culture, and love the work you do. Join us, and be part of a team reimagining technology to create solutions that truly make a difference – for a safer, greener, and more inclusive world.

How we rate this

Lead Site Reliability Engineer at Thales rates 10 out of 100 for how much of the daily work is AI. That makes it Little AI (AI Level 1 of 4). The level is about AI in the job, not seniority.

Classification

Little AI. AI is not part of the work.

●●●● Builds AI80 to 100
●●●○ Works on AI60 to 79
●●○○ Uses AI40 to 59
●○○○ Little AI0 to 39

Levels come from how often the tools, models and workflows of the role are named in the posting itself. Read the description and count the AI tools, models and workflows it names.

Key facts

Lead Site Reliability Engineer is an open job at Thales.
Level rates this role AI Level 1 of 4: Little AI.
The role is based in Bangalore - Indraprastha.
The job was posted on October 28, 2026.
Seniority: lead.
Applications are handled by Thales. Apply on Thales

Prepare for this job

Built from this posting and from similar jobs on Level.

Skills and AI tools this role asks for

Site Reliability EngineeringCloud InfrastructureIncident ResponseTroubleshootingAutomationLinuxTopHtop

Questions you could be asked

Tell me about a project where site reliability engineering was part of your work. What did you do?
Tell me about a project where cloud infrastructure was part of your work. What did you do?
Tell me about a project where incident response was part of your work. What did you do?
Tell me about a project where troubleshooting was part of your work. What did you do?
Tell me about a project where automation was part of your work. What did you do?

Adapt your resume

List these exact terms on your resume: Site Reliability Engineering, Cloud Infrastructure, Incident Response, Troubleshooting, and Automation. An applicant tracking system matches the wording, not the idea.
Attach one line of real, concrete experience to at least one of them. A tool named with nothing behind it rarely survives a human read.

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