I turn complex products into customer outcomes.

I am a Senior Customer Success Manager with 9+ years across complex B2B SaaS products spanning application and web security, compliance automation, email infrastructure and developer tools. I work hands-on across onboarding, adoption, retention, renewals and expansion, in close partnership with Product, Engineering, Sales and Marketing.

Niladri Mitra, Senior Customer Success Manager based in Bengaluru
Senior Customer Success Manager

Customer Success is the core, supported by technical account management, GTM context and hands-on post-sales operations.

  • 9+ years
  • Enterprise B2B SaaS
  • Technical account management

Where I have built and delivered.

Three product environments. One consistent focus: helping customers adopt, retain and grow with complex software.

SendX by SendWorks logo
Appknox logo
Sprinto logo

I build the operating system behind durable customer relationships.

I work across the complete post-sales journey and translate customer evidence into clearer product, revenue and delivery decisions.

Make customer value visible.

Keep customers, Product, Engineering and revenue teams working from the same evidence. That is how adoption becomes retention, expansion and a better product.

Commercial ownership backed by customer depth.

I have managed enterprise portfolios where adoption, retention, renewal, expansion and executive trust operate as one customer system.

Portfolio ownership at scale.

Owned portfolios up to $3M ARR and created an $800K upsell and cross-sell pipeline across strategic enterprise accounts.

$3Mlargest ARR portfolio owned
$800Kupsell and cross-sell pipeline created

Retention, adoption and trust.

Structured health, renewal, QBR and adoption motions supported strong portfolio performance and customer advocacy.

110%NRR across enterprise portfolios
98%GRR
95%+CSAT
A whimsical customer-success workshop in a green valley
Calm systems, clear outcomes

Senior Customer Success experience across application security, compliance automation, email infrastructure and developer tools.

The homepage keeps the story concise. The downloadable resume contains the full career history, achievements and toolset.

Customer Success Consultant - Sendworks & Astra Security

Led product support, API integrations, technical discovery, demos and onboarding across email infrastructure and web security. Ran the SendPost API beta, improved feature adoption, reduced implementation time and technical escalations, built the Astra Security onboarding pipeline, automated renewals in HubSpot and led a support migration from Freshdesk to Pylon.

$1.2M ARR portfolio$125K upsell quota85% feature adoption40% faster implementation35% fewer technical escalations100M+ monthly emails supported
HubSpot · Pylon · Intercom · Freshdesk · Postman · Metabase

Technical Account Manager -> Senior Customer Success Manager - Appknox

Progressed from technical account delivery into strategic enterprise Customer Success. Led CSM and Product Support teams, enterprise onboarding, security POCs, QBRs, adoption, renewals, expansion, RFP and TPRM responses, and customer-led Product and GTM feedback.

$3M ARR portfolio110% NRR$800K expansion pipeline450+ security POCs90%+ POC-to-closure100% QBR completionUnileverShellSamsungHDFC BankCommercial Bank of Qatar
HubSpot · Pendo · Metabase · Crisp · SAST · DAST · RFP · TPRM

Customer Success Manager - Sprinto

Onboarded and supported more than 90 SaaS companies through SOC 2, ISO 27001 and other compliance programmes, including a seven-day attestation. Maintained complete QBR coverage, protected the full ARR base with zero churn, and sustained strong CSAT and NPS.

90+ SaaS companies100% renewal rateZero churn100% QBR completion7-day fastest attestationCSAT 9/10NPS 9-10HackerRankWhatfixNiumAnacondaPensionBox
SOC 2 · ISO 27001 · GDPR · HIPAA · HITRUST · CCPA · Compliance automation

Continuous learning across Customer Success, AI, cybersecurity and technical operations.

A practical learning portfolio spanning customer outcomes, generative AI, security, GRC, cloud, sales enablement and hands-on technical foundations.

35credentials completed
10learning providers
5core learning domains

What customers and colleagues say.

A whimsical valley of practical digital tools
Useful tools, built as small worlds

Tell me what you are trying to build, fix or scale.

I am open to Senior Customer Success Manager opportunities and selected Customer Success consulting work where technical depth and customer context matter.

Your message goes to a private inbox. Direct contact details are not published here.