Senior System Engineer - C++ / Go / Rust

Securly; India; On-site; INR 3,000,000 - 6,000,000; Full time

Benefits offered by this job

Comprehensive health insurance (family

Learning & development reimbursement

Paid time off + public holidays

Retirement benefits (EPF and gratuity)

Parental leave (as per statutory norms

Job summary

Securly in Pune, India is hiring a Senior Software Engineer to build our edge proxy appliance—a virtual network security device running in customer networks. You will own the datapath, packaging, updates, and fleet telemetry to AWS.

The role requires strong C/C++, Go or Rust, with focus on Rust for new proxy, and deep experience in Linux networking and security. You'll operate across containers, TLS, and high-availability design.

Qualifications

• 8+ years in systems, networking, or security products.
• Production Rust, C/C++, or Go experience; Rust preferred for new proxy.
• Network programming below HTTP layer: TCP, TLS, sockets, and proxies.
• Shipped appliance or proxy in customer networks and the problems solved.
• Experience delivering software into customer networks via containers.
• Security hardening and OTA/update capabilities.

Responsibilities

• Own the edge proxy appliance end-to-end.
• Develop and optimize the proxy datapath and TLS inspection.
• Package and ship container images and minimal OS images.
• Implement safe OTA updates with health-check rollbacks.
• Design for high availability, watchdogs, and failover.
• Collaborate with AWS control plane and telemetry integration.

Skills

C/C++

Go

Rust

Network programming

Linux systems

Containerization

Tools

Docker

Kubernetes

AWS

Terraform

Job description

Senior Software Engineer – Virtual Network Security Appliance (C++ / Go / Rust)

The role

You'll build and own Securly's edge proxy appliance: a virtual appliance (containers on a minimal Linux OS image) that we deliver into customers' school networks to intercept, inspect, and filter web traffic. You own it end to end: the traffic-handling datapath, how it's packaged and shipped, how it updates itself safely, how it fails without cutting off a network, and how the deployed fleet reports back to our AWS control plane.

This is a senior role in Pune Engineering, reporting to the SVP of Engineering.

You’ll bring

You've shipped software that runs inside a customer's network, such as a proxy, firewall, secure web gateway, VPN gateway, load balancer, or network security appliance. We're open to strong C/C++ or Go engineers whose Rust is still growing, as well as Rust engineers with appliance or proxy experience.

• 8+ years of software engineering in systems, networking, or security products
• Production experience in Rust, C/C++, or Go. Rust is where the new proxy is headed, so you'll write Rust here.
• Network programming below the HTTP layer: TCP streams, sockets, bidirectional forwarding, transparent proxying (TPROXY), TLS, and the Linux network stack
• A shipped appliance, proxy, or network security product you can name, and the problems you solved on it
• Containerization and software delivery into customer networks: Docker image builds, minimal Linux images, container networking, installs and upgrades
• Network security fundamentals: TLS, mTLS, certificates, and hardening systems against tampering
• Performance testing and profiling: load tests, CPU/memory profiling, flame graphs
• Working knowledge of AWS and infrastructure as code (CloudFormation or Terraform)

Strongly preferred:

production Rust (async, Tokio); Linux kernel networking (eBPF/XDP, netfilter, routing); HAProxy or Envoy; OTA or fleet management at scale; high-availability design (watchdogs, VRRP/CARP failover).

Nice to have:

RADIUS; fleet messaging (gRPC over mTLS, MQTT, AWS IoT Core); observability (CloudWatch, Splunk, SLO definitions); immutable OS images (Flatcar, Talos, Buildroot).

What you’ll build

• Proxy datapath: TCP interception, transparent proxying, and TLS inspection, plus Linux network stack tuning for throughput and latency.
• Appliance packaging and delivery: Container images and a minimal, immutable OS image that installs and runs cleanly inside customer networks.
• Safe updates: Zero-downtime OTA updates with A/B swaps, automatic health-check rollbacks, and phased canary rollouts to machines you can't log into.
• Fail-open and high availability: Watchdogs, failover, and bypass logic so the customer's internet keeps working if the appliance doesn't.
• Fleet control plane: Secure, low-latency channels for policy updates and telemetry between deployed appliances and AWS.
• Security hardening: Protecting the appliance against tampering and configuration drift in environments we don't own.
• Performance baselines: Load tests that simulate sharp, predictable traffic spikes (everyone on the network coming online at the start of the school day), profiling, and written baselines.

The technical challenges

• Traffic you have to handle correctly, every time. The proxy sits in the path of all web traffic on the network. Latency, memory use, and correctness under load all matter.
• Machines you can't touch. Appliances run inside networks we don't control. Updates, rollbacks, and debugging all have to work remotely, through telemetry and careful rollout design.
• Failure has to be safe. If the appliance crashes or an update goes wrong, traffic must keep flowing. Designing fail-open behavior and failover is core to the job.
• Every environment is different. Customer networks vary widely in hardware, firewall setups, and configuration. The appliance has to install and run cleanly across all of them.
• Architecture decisions are yours. Many design choices, standards, and documents for the appliance are still to be defined. You'll make those decisions and write them down.

What you’ll gain

• Production Rust systems experience on a high-throughput network proxy, one of the most in-demand and hardest-to-get skill sets in systems engineering. If you're coming from C/C++ or Go, you'll make that move on real production work.
• End-to-end ownership of an appliance platform: datapath, OS image, update pipeline, HA, security, and fleet control plane. Most engineers only ever own one of these layers.
• Architecture experience, with your design decisions and written docs shaping how the platform is built.
• Hands-on depth in Linux networking and security: TPROXY, TLS inspection, eBPF/XDP, mTLS, and hardening.
• Close work with a Distinguished Engineer on architecture, plus mentoring other engineers on the team.
• A path toward technical leadership across the proxy and filtering platform. [confirm path]

Compensation and benefits

Competitive compensation, based on experience.

• Comprehensive health insurance (employee, spouse, children, and parents)
• Accidental and term life insurance
• Learning and development reimbursement
• Paid time off, plus 10+ public holidays per year
• Retirement benefits (EPF and gratuity)
• Parental leave (as per statutory norms)
• Structured onboarding and ongoing coaching

Why Securly

The appliance you build filters web traffic for students in schools. Securly's technology has been credited with helping save 2,400+ student lives, and Pune engineering is where core infrastructure like this gets built, not a satellite team.

Securly is the market leader in AI-powered student safety and wellness, trusted by 20M+ students across 20,000+ schools. Since launching the first cloud-based K-12 web filter in 2013, we've combined AI and human insight to help schools spot and respond to bullying, self-harm, and violence. TIME named us one of America's Top EdTech Companies 2026, and we're a GSV 150 honoree and an EdTech Top 40 "Most Used Product."

Our people-first culture shows in the numbers (Source: Securly Qualtrics Employee Survey, 2025; WSA Global Benchmark):

• 82% employee engagement, vs. a 73% global benchmark
• 94% of employees are proud to work here
• 91% rate manager effectiveness above benchmark

Securly is an Equal Opportunity Employer committed to a diverse, inclusive workplace.