Dl Senior engineer client services Jobs – 100 Open Jobs Today

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Principal Software Engineer- Agent Developer

SISA -
Delhi

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Job details

Full-time
3 days ago

Qualifications

BCS
CI/CD
Authentication
TCP
Go
Computer Science
PCI
Windows
OS Kernels
C++
C
Bachelor's degree
Continuous integration
Linux
TCP/IP
gRPC
Debugging

Full job description

About the Role

We're hiring a Senior Software Engineer to build and maintain the core of our endpoint security agent — the core runtime and its pluggable security-module framework, built entirely in Go — along with the on-premise management and telemetry-relay components it communicates with over gRPC. You'll also work on the kernel-level components that hook into the OS, which are written in C/C++ as is standard for driver-level development. This is a deeply hands-on systems engineering role, working close to the OS, network stack, kernel-level hooks, and security primitives (mTLS, certificates, secure channels).

Key Responsibilities

Design and implement features across the core agent runtime and its pluggable security-module framework, entirely in Go.
Develop and maintain kernel-level components (e.g., Windows kernel drivers/minifilters, Linux kernel modules/eBPF) used for real-time monitoring, hooking, or enforcement, ensuring they are stable and don't destabilize the host OS.
Build and maintain gRPC services/clients for the control-plane channel between the agent and its on-premise management component, and the data-plane channel to the telemetry relay component.
Implement mTLS-based authentication, certificate handling, and secure channel setup at the agent level.
Build reliable local buffering/queuing (e.g., disk-backed queue, WAL) so telemetry survives relay or network downtime without data loss.
Implement security-module binary distribution, independent versioning, staged/canary rollout, and rollback mechanisms.
Design for resource efficiency — CPU, RAM, disk, network — so multiple security modules can run concurrently on constrained endpoints without degrading host performance.
Build failure isolation between the core agent runtime and individual security modules so one module crashing doesn't take down the whole agent.
Debug and optimize performance and stability issues across Windows and/or Linux endpoints in production environments.
Collaborate with the architect on protocol/version compatibility matrices; author and maintain Protobuf schemas.
Write unit and integration tests, participate in code reviews, and contribute to CI/CD pipelines for agent releases.

Required Technical Skills

8–10 years of hands-on software engineering experience with a strong systems-level programming background.
Strong, genuinely hands-on proficiency in Go — the agent runtime and its modules are built entirely in Go — this role is code-first, not just familiar-with-the-syntax.
Hands-on experience writing and debugging kernel-level code in C/C++ (e.g., Windows kernel drivers/minifilters/WFP, or Linux kernel modules/eBPF) — this is a core requirement, not a nice-to-have, given the agent's need for OS-level hooks that can't be implemented in Go.
Solid understanding of gRPC/Protocol Buffers, HTTP/2 streaming, and core networking fundamentals (TCP/IP, TLS/mTLS).
Experience building agent/daemon software that runs persistently on endpoints (Windows and/or Linux) — service lifecycle, background processes, auto-update mechanisms.
Comfortable with concurrent/multi-threaded programming and designing for resource-constrained environments.
Experience implementing local data persistence or buffering for reliability under network interruption (disk-backed queues, write-ahead logs, or similar).
Understanding of certificate-based authentication and secure communication design at the implementation level.

Preferred / Nice to Have

Experience in EDR/XDR, antivirus, or other endpoint security agent development.
Exposure to active security-testing or breach-and-attack simulation style tool internals.
Experience with cross-platform agent development (Windows/Linux/macOS).
Familiarity with PCI-DSS or other compliance-driven engineering practices.
Experience with observability tooling (Prometheus, OpenTelemetry, or similar) for on-prem/distributed components.

What Success Looks Like in This Role

Security-module binaries that upgrade cleanly and roll back safely without fleet-wide incidents.
An agent that degrades gracefully — buffering and reconnecting — rather than losing data during network interruptions.
Kernel-level code that is stable enough to run on production endpoints without causing crashes or performance regressions.

Education

Bachelor's degree in Computer Science, Engineering, or a related field. Equivalent hands-on experience will be given full weight over formal qualifications.

Apply Now

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