Sr. Infrastructure Engineer

Essential Responsibilities

• Primary responsibility would be overseeing complete Load balancing and Network Packet Broker Operation.
• Load Balancing Engineer with hands-on experience on F5 BIG-IP GTM and LTM devices as well as Citrix NetScaler.
• Hands on experience in migrating other load balancer vendors to F5 Load Balancer
• Must be an expert in F5 and Citrix Load Balancing platforms.

Roles and Responsibilities

• Should analyse, design, implement and maintain the networks F5 and Citrix NetScaler Load Balancer infrastructure.
• Should inspect data packets and TCP, IP flow in network and application flow.
• Should possess a working knowledge of switches, routers, and firewall concepts.
• Should be able to configure and maintain F5 and Citrix Load Balancers, load balancing best practices.
• Should also take the responsibility to upgrade network operating systems software and hardware as per the management requirements.
• Must ensure that the plans are integrated effectively with the other aspects of the technical infrastructure.
• Extensive knowledge of Load balancing technology including algorithms and health check options.
• Knowledge and experience regarding F5 BIG-IP LTM VIP configuration with health check.
• Knowledge and experience with F5 BIG-IP GTM Wide IP configuration.
• F5 BIG-IP iRule programming and troubleshooting experience.
• Extensive knowledge of Citrix NetScaler VIP configuration with Knowledge and experience with Citrix NetScaler Global Load Balancing (Gslb) configuration.

Position – SRE Engineer

Location – Navi Mumbai

Who are we

Based out of IIT Bombay, HaystackAnalytics is a HealthTech company creating clinical genomics products, which enable diagnostic labs and hospitals to offer accurate and personalized diagnostics. Supported by India's most respected science agencies (DST, BIRAC, DBT), we created and launched a portfolio of products to offer genomics in infectious diseases. Our genomics-based diagnostic solution for Tuberculosis was recognized as one of the top innovations supported by BIRAC in the past 10 years, and was launched by the Prime Minister of India in the BIRAC Showcase event in Delhi, 2022.

About the Role:

We are seeking a highly skilled Site Reliability Engineer (SRE) to join our infrastructure team. The ideal candidate will bring deep expertise in Linux systems, cloud infrastructure automation, and network administration, with a strong focus on reliability, scalability, and performance. ensuring firewall/network security compliance.

Key Responsibilities:

• Develop and maintain automation scripts (Bash, Python, etc.) for system and cloud infrastructure operations.
• Manage, monitor, and troubleshoot Linux servers  in production environments
• Familiarity with Network tools in Linus to triage  network connectivity  and performance issues .
• Configure, maintain, and secure network infrastructure including switches, routers, and firewalls.
• Design and execute Network Continuity Plans (NCP) and disaster recovery strategies.
• Collaborate with cross functional team for triaging and resolving site specific issues in production  related to  server deployment , SOP adherence , Triage and defect resolution
• Collaborate with developers and DevOps teams to define SLAs, SLOs, and error budgets.
• Implement proactive monitoring and alerting using modern observability tools.
• Participate in on-call rotations and incident response processes.
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Objectives of this Role:

• Build, automate, and manage scalable infrastructure and deployment pipelines to support development and production environments.
• Enable rapid, secure, and reliable software delivery across engineering teams.
• Ensure system availability, performance, and security in cloud and containerized environments.
• Implement and enforce best practices in CI/CD, observability, and incident response.
• Collaborate with cross-functional teams including software developers, QA, and product managers.
• Proactively identify and automate manual processes to improve engineering efficiency.
• 3–7 years of experience as an SRE, DevOps, or Systems/Network Engineer.
• Strong scripting skills (e.g., Bash, Python, or Go).
• Proficiency in Linux administration and performance tuning.
• Deep understanding of TCP/IP, routing, DNS, firewalls, and networking protocols.
• Hands-on experience managing network infrastructure and firewall rules (e.g., iptables, pfSense, Palo Alto, etc.).
• Docker (multi-stage builds, docker-compose)

Soft Skills

• Proactive problem-solving and ownership mindset
• Strong documentation and communication skills
• Ability to mentor junior engineers
• Curiosity to learn and experiment with emerging DevOps tools

Preferred Qualifications:

• Certifications such as CKA/CKAD, RHCE, AWS Certified SysOps Administrator, or Cisco CCNA/CCNP.
• Experience with service meshes (e.g., Istio), observability stacks (e.g., Prometheus, Grafana), or network policy management (e.g., Calico, Cilium).
• Exposure to secure DevOps practices and compliance standards (e.g., ISO, NIST).

To know more about us – https://haystackanalytics.in

We are looking networking professionals with the following skill set,

Experience :6+ years of experience in the networking domain

Key skills:

• Must have 6+ years of experience in C/C++ programming language.
• Knowledge of Go programming language and Python programming language is a big plus.
• Strong background in L4-L7 Internet Protocols TCP, HTTP, HTTP2, GRPC and HTTPS/SSL/TLS.
• Background in Internet security related products such as Web Application Firewalls, API Security Gateways, Reverse Proxies and Forward Proxies
• Proven knowledge of Linux kernel internals (process scheduler, memory management, etc.)
• Experience with eBPF is a plus.
• Hands-on experience in cloud architectures (SaaS, PaaS, IaaS, distributed systems) with continuous delivery
• Familiar with containerization solutions like Docker/Kubernetes etc.
• Familiar with server less technologies such as AWS Lambda.
• Exposure to machine learning technologies and distributed systems is a plus

Cloud EOS Team

·        Arista Networks is the leader in building software driven cloud networks for today’s datacenter, cloud and campus environments. Arista delivers the most efficient, reliable and high performance Universal Cloud Network architectures based on 10G, 25G, 40G, 50G, 100G and 400G platforms delivered with an extensible operating system – Arista EOS®. Arista EOS is built on an open, programmable, and resilient state-sharing architecture that delivers maximum system uptime, reduces CAPEX and OPEX by simplifying IT operations and enables business agility.

·        We are building disruptive products and services that deliver highly automated networks that interconnect and secure connectivity between various global locations. As a part of the team you will be exposed to wide variety of technologies like EOS (Extensible Operating System), multithreaded, multicore software forwarding based on DPDK, public cloud (AWS, Azure, GCP) infrastructure, Path selection, NFV, Containers, Network Segmentation, Virtualization, microservice based architectures, CI/CD pipelines, and Terraform-based declarative provisioning models. As a core member of the CloudEOS team, you will be part of a fast paced, high-caliber team building cutting edge software products for Cloud-enabled WAN connectivity. The team is responsible for all aspects of the development and delivery of control plane, software data plane, and management platform/APIs/services.

·        Arista provides an open Engineering-driven culture which fosters innovation and enables engineers to Learn, Lead and Thrive. Our adoption of modern software tools, methodologies and processes and emphasis on automation enables our engineers to focus their energies on the truly complex problems and be among the most productive in the industry. Arista's products are purpose built with the scale, performance and quality required to operate in some of the most demanding environments - this provides engineers the platform and rigour to learn and gain experience in building complex, scalable software systems.

Basic qualifications

·        Bachelor's/Master's degree in Engineering

·        3+ years of experience working as a Systems Software Development Engineer

·        Proficiency in C++/C programming language

·        Software Development experience with Linux

Preferred qualifications

·        Experience with DPDK, Software Forwarding, Qos.

·        Python and/or Golang development experience

·        Strong communication skills and the ability to work in a team environment

·        Experience working through the complete software development life cycle right from requirements gathering to delivering the fully developed feature.

·        Strong software debugging skills especially in embedded systems.

·        Experience in Network Systems Software development is a plus

EOS Routing Team

·        Arista Networks is the leader in building software driven cloud networks for today’s datacenter, cloud and campus environments. Arista delivers the most efficient, reliable and high performance Universal Cloud Network architectures based on 10G, 25G, 40G, 50G, 100G and 400G platforms delivered with an extensible operating system – Arista EOS®. Arista EOS is built on an open, programmable, and resilient state-sharing architecture that delivers maximum system uptime, reduces CAPEX and OPEX by simplifying IT operations and enables business agility.

·        The EOS Routing PI team is responsible for developing routing protocols like BGP, OSPF and ISIS and Data Center and SP technologies like MPLS, Segment Routing and EVPN. A unique feature of the Arista routing team is that the routing software is common across Campus, Data Center and Service Provider routing features. This is a global team that spreads multiple geographies working on cutting edge features that get deployed in the largest Cloud titan, Service Provider, Enterprise and Campus networks.

·        Arista provides an open Engineering-driven culture which fosters innovation and enables engineers to Learn, Lead and Thrive. Our adoption of modern software tools, methodologies and processes and emphasis on automation enables our engineers to focus their energies on the truly complex problems and be among the most productive in the industry. Arista's products are purpose built with the scale, performance and quality required to operate in some of the most demanding environments - this provides engineers the platform and rigour to learn and gain experience in building complex, scalable software systems.

Basic qualifications

·        Bachelor's/Master's degree in Engineering

·        3+ years of experience working as a Systems Software Development Engineer

·        Proficiency in C++/C and Python programming languages

·        Experience with routing protocols and/or Data Center/SP routing features

·        Software Development experience with Linux

Preferred qualifications

·        Strong communication skills and the ability to work in a team environment

·        Experience working through the complete software development life cycle right from requirements gathering to delivering the fully developed feature.

·        Strong software debugging skills especially in embedded systems.

·        Experience in Network Systems Software development is a plus

EOS Layer 2 and Infra PI Team

·        Arista Networks is the leader in building software driven cloud networks for today’s datacenter, cloud and campus environments. Arista delivers the most efficient, reliable and high performance Universal Cloud Network architectures based on 10G, 25G, 40G, 50G, 100G and 400G platforms delivered with an extensible operating system – Arista EOS®. Arista EOS is built on an open, programmable, and resilient state-sharing architecture that delivers maximum system uptime, reduces CAPEX and OPEX by simplifying IT operations and enables business agility.

·        The EOS Layer 2 PI and Infra team is responsible for working on platform independent features on Arista’s EOS working alongside the EOS Routing team. The team is responsible for building innovative, scalable solutions in areas including EOS infrastructure, Layer 2 protocols like 802.1X, Macsec, DHCP, RADIUS etc. A unique feature of the Arista’s Layer 2 PI and Infra team is that the software developed is common across Campus, Data Center and Enterprise features. This is a global team that spreads across multiple geographies working on cutting edge features that get deployed in the largest Cloud titan, Service Provider, Enterprise and Campus networks.

·        Arista provides an open Engineering-driven culture which fosters innovation and enables engineers to Learn, Lead and Thrive. Our adoption of modern software tools, methodologies and processes and emphasis on automation enables our engineers to focus their energies on the truly complex problems and be among the most productive in the industry. Arista's products are purpose built with the scale, performance and quality required to operate in some of the most demanding environments - this provides engineers the platform and rigour to learn and gain experience in building complex, scalable software systems.

Basic qualifications

·        Bachelor's/Master's degree in Engineering

·        3+ years of experience working as a Systems Software Development Engineer

·        Proficiency in C++/C and Python programming languages

·        Software Development experience with Linux

Preferred qualifications

·        Experience with Layer 2 protocols like 802.1X, AAA, Macsec

·        Strong communication skills and the ability to work in a team environment

·        Experience working through the complete software development life cycle right from requirements gathering to delivering the fully developed feature.

·        Strong software debugging skills especially in embedded systems.

·        Experience in Network Systems Software development is a plus

Purpose of the Role

Responsible for 100% uptime of Network with efficient and timely first support on a 24x7 basis to meet Business Goals; providing the highest level of Technology Support, Introducing and maintaining the state of the art Technology in line with the Business Strategy.

Desired Skills and Competencies

• Ability to Influence
• Customer Sensitivity
• Execution Excellence
• Functional Expertise
• Situation Handling
• Team Management
• Working Together

Role Description:

1. Work Experience: Should have work experience in Telco / ISP service Provider background
2. Should have experience in Planning and Operations of Broadband network.
3. Should Lead a Team and Manage Day to Day NOC Operation.
4. Manage Outages in the Network and Provide resolution within SLA; Handle Customer Escalation with Minimal Turnaround time.
5. Escalating Issues and Co-ordinating with vendor team on Bug fixes and Resolutions.
6. Maintain the Uptime of the network at 100%.
7. Should Monitor the Network and planning maintenance activities timely.
8. Should work on building redundancy and elimination of Point of Failures.
9. Should work on Bandwidth Management and Traffic Load Balancing Mechanism.
10. Provide backend support to cross functional teams for new provisioning and Fault Repair.
11. Should be available 24*7 for support for responding to emergency situations and planned activities.
12. Should be Responsible for Inventory Management.
13. Manage and Train NOC team, perform evaluations and hiring, and handle disciplinary responsibilities. 
14. Prepare and Maintain SOPs of critical Process; perform Process Correction on requirement basis.
15. Should analyse fault trends and plan preventive actions.
16. Should be Responsible for publishing of daily, weekly, monthly reports and statistics reports.

Technical Requirements:

1. Should have Good Knowledge of Switching and Routing.
2. Hands-on experience of BGP, MPLS, MPLS L2VPN, MPLS L3VPN, ISIS, OSPF, VLAN, DHCP, PPPoE, STP, LAN, WAN, NAT etc
3. Should have worked in Layer-2 and Layer-3 Switches, Edge Routers; preferably on Cisco and Huawei Devices.
4. Should have worked on GPON Technology and have understanding of Operation and Troubleshooting skills, hands on experience on installation and implementation of OLTs and ONTs.
5. Should have worked on NMS Tools and have understanding of SNMP Protocol.
6. Should have understanding of BNG workings principles, RADIUS and Diameter protocols.
7. Should have Good understanding of Fiber Technology.
8. Should have understanding of Wireless Technologies such as 802.1b/g/n, 802.11ac, should be able to configure WIFI routers and debug issues.
9. Must have done BE/B.Tech or equivalent in Computer Engineering/Electronics & Communication Engineering/Electronics & Electrical Engineering
10. CCNA/CCNP Certification is Preferred.

Installation, Configuration and Troubleshooting of Network Equipment e.g CCTV Camera, Network Switch, Router, Wi-fi, Server and Desktop computer etc. Willing to travel entire India based on project requirement.

• Perform technical feasibility studies of new technologies and architectures, including evaluation of OTS cloud offering.
• Generate entire software image for the target device, including the kernel, device drivers, libraries, and application software, and the bootloader for proprietary IOT connectivity device(s).
• Software packaging with RPM building and management
• Define the process to upgrade the new Linux package to existing hardware at customer premises
• Configuration and Troubleshoot of the proprietary IOT connectivity devices for internal R&D teams during their development and verification
• Automate the creation and distribution of keys and certificates
• Understand, implement, and automate security controls for IoT connectivity devices.
• Tune server and application-level performance monitoring and alerting.
• Help define our roadmap and architecture based on technology and business needs, considering architectural issues and tradeoffs
• Understand and manage integration points with other systems that interface with your applications
• Supports development of project plans, including scope, budget, schedules, and risk management.
• Works closely with the business analysts, software development and verification team, the functional manager, and the program manager.
• Collaborate and work with global teams in multiple locations.
• Interface with Global Privacy and Security team for the IoT Gateway understand security risks and recommendations and provide solutions to mitigate the security risks

• Bachelor’s degree in Computer Networking / Computer Science / Software Engineering or a related field
• 12+ years of hands-on experience in Networking, shell scripting, and Linux internals, with a development background.
• Strong understanding of Networking concepts like VPC, Route tables, Host base router firewall, SSH, NAT, DNS, DHCP, SNMP, Virtual IPs, VPN
• Linux System Administration and Networking work experience
• Configuring Firewalls(IP tables/firewall) and security software
• Able to generate Linux packages, and configure based on business needs.
• Passion for cybersecurity. Ability to build secured Linux packages with antivirus and security patches.
• Shell, Python scripting experience
• Basic SQL skills
• Ability to work with cross-functional and remote teams. Must be able to communicate in English, both written and verbal.
• Interpersonal skills to effectively collaborate with vendors and customers.

• Experience with Agile Scrum
• Development background in Java/C++
• DevOps knowledge
• Knowledge on javascript