Principal Software Engineer

Principal Software Engineer
- Sustaining Engineering - Hyderabad, India
About Nasuni
Nasuni is a profitable, growing SaaS data infrastructure company reinventing enterprise file storage and data management in an AI-driven world. We power the data infrastructure of the world's most innovative enterprises. Backed by Vista Equity Partners, our engineers aren't working behind the scenes — they're building what's next with AI. Our platform lets businesses seamlessly store, access, protect, and unlock AI-driven insights from exploding volumes of unstructured file data. As an engineer here, you'll help build AI-powered infrastructure trusted by 900+ global customers, including Dow, Mattel, and Autodesk.

Nasuni is headquartered in Boston, USA with offices in Cork-Ireland, London-UK and we are starting an India Innovation Center in Hyderabad India to leverage exuberant IT talent available in India. The company's recent Annual Revenue at $160M and is growing at 25% CAGR.

We have a hybrid work culture. 3 days a week working from the Hyderabad office during core working hours and 2 days working from home.

Job Description:

We are looking for a highly skilled
Principal Sustaining Engineer
to act as the technical leader for our sustaining engineering team. In this role, you'll combine deep enterprise software expertise with a passion for solving the most complex customer issues. You'll be the first stop for escalations, a mentor to peers, and a builder of tools and processes that make our platform more reliable and supportable at scale.

As a Principal Sustaining Engineer, you will…

• Serve as the technical escalation point for the most complex customer cases.
• Diagnose, reproduce, and resolve challenging product and environment issues.
• Lead root-cause analysis and contribute fixes across C/C++ and Python codebases.
• Design and implement tooling, scripts, and observability improvements for supportability.
• Participate in design/code reviews and collaborate with core engineering teams.
• Mentor senior and sustaining engineers in technical debugging, coding, and process rigor.
• Act as a bridge between Customer Success and Engineering, ensuring customer pain points translate into product improvements.
• Be a part of the quarterly 24x7 on-call rotation.

Required skills + experience we look for are…

• 8-10 years of enterprise software or storage platform development experience.
• Expert-level skills in Linux internals (memory, filesystems, networking, security).
• Strong coding expertise in C, C++, Python, and Bash.
• Hands-on debugging experience with gdb, valgrind, tcpdump, wireshark.
• Knowledge of authentication (Active Directory, LDAP), distributed systems, and filesystems (XFS, EXT4).
• Experience handling high-severity customer escalations.
• Excellent problem-solving, collaboration, and mentoring abilities.

It's a bonus if you have…

• Prior leadership of technical war rooms or major incident response.
• Experience with hypervisors, CI/CD systems, and cloud integration.
• Contributions to open-source storage or Linux communities.

Location
This position is based in Hyderabad, India, working as part of a global, follow-the-sun sustaining engineering model.

Experience

• BE/B.Tech, ME/M.Tech in computer science (or) Electronics and Communications (or) MCA
• 11 to 15 years' previous experience in the industry. At least 7+ years of experience in similar sustaining type environment.

Why Work at Nasuni – Hyderabad?
Benefits
As part of our commitment to your well-being and growth, Nasuni offers
competitive benefits
designed to support every stage of your life and career:

• Competitive compensation programs
• Flexible time off and leave policies
• Comprehensive health and wellness coverage
• Hybrid and flexible work arrangements
• Employee referral and recognition programs
• Professional development and learning support
• Inclusive, collaborative team culture
• Modern office spaces with team events and perks
• Retirement and statutory benefits as per Indian regulations

To all recruitment agencies: Nasuni does not accept agency resumes. Please do not forward resumes to our job boards, Nasuni employees or any other company location. Nasuni is not responsible for any fees related to unsolicited resumes.
Nasuni is proud to be an equal opportunity employer. We are committed to fostering a diverse, inclusive, and respectful workplace where every team member can thrive. All qualified applicants will receive consideration for employment without regard to race, religion, caste, color, sex, gender identity or expression, sexual orientation, disability, age, national origin, or any other status protected by applicable laws in India or the country of employment.
We celebrate individuality and are committed to building a workplace that reflects the diversity of the communities we serve. If you require accommodation during the recruitment process, please let us know.
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