Technical Co-founder & Chief Technology Officer (CTO)

Company: ETERNup

Location: Kolkata, India (Hybrid / Flexible)

Equity: Significant Co-founder Equity Stake

About ETERNup

People don't want another app; they want outcomes.

In an ecosystem where AI assistants and autonomous agents can execute actions around the clock, trust and proof are the true bottlenecks. ETERNup sits directly between the user and external execution layers: we extract unstructured commitments from communications, coordinate single-tap resolution, and independently verify that every action completed in the external world.

We have a 437k+ line codebase, an engineering team shipping on a tight public cadence, and immediate milestones tracking toward our institutional raise and accelerator tracks. We are looking for an experienced Technical Co-founder to own system architecture, lead technical execution, and guide our platform from early cohorts to global scale.

The Tech Stack

Core Spine & Backend: TypeScript / Node.js, Python (high-throughput data processing, extraction pipelines, schema contracts)

Client & UI Systems: React, React Native / Modern Cross-Platform Mobile, Tailwind CSS, lightweight ephemeral web components

AI & Agent Infrastructure: LLM orchestration (LangChain / LlamaIndex / DSPy patterns), Model Context Protocol (MCP), tool-use pipelines, prompt routing, evaluation frameworks

Data & Storage: PostgreSQL / Supabase, Redis (distributed locking and caching), Vector indexing / embeddings, append-only immutable event ledgers

Integrations & Protocols:



Gmail & Google Calendar APIs (OAuth 2.0), messaging connectors, webhook infrastructures, financial & digital commerce open rails (UPI, ONDC, Account Aggregator)

Infrastructure & Security: AWS / GCP, Docker, Kubernetes, CI/CD automated isolation suites, multi-tenant row-level security (RLS), zero-knowledge/privacy-preserving pipelines

What You Will Do

Own Technical Architecture: Lead architectural direction across the core verification rails, personal state schemas, and model-routing pipelines.

Drive Shipping Cadence: Work alongside the CEO and manage the existing Kolkata engineering team to maintain a rapid, weekly public deployment rhythm.

Scale Data Ingestion & Extraction: Design low-latency parsing engines capable of scanning multi-channel unstructured data (email, calendar, communications) with high precision (≥80%) and zero data leaks.

Build Verification Protocols: Implement independent read-back mechanisms and state verification across third-party APIs and protocols before marking external actions complete.

Infrastructure Reliability & Unit Economics: Optimize model routing, token usage,



and inference overhead to maintain target cost margins per active user while hardening zero-cross-tenant isolation.

Co-Founder Leadership: Participate directly in strategic decision-making, investor technical diligence, IP filings, and scaling the engineering organization.

Core Skill Sets & Qualifications

Background & Education: B.Tech / M.Tech in Computer Science or related discipline from a premier institution (IIT / BITS / top NIT preferred).

Leadership Experience: 6+ years of hands-on software engineering experience, with prior leadership as a CTO, VP of Engineering, Tech Lead, or Founding Engineer in a fast-growing, venture-backed startup.

Systems Architecture: Demonstrated experience building resilient distributed backends in TypeScript and Python handling asynchronous queues, webhook engines, and strict transactional data integrity.

Agentic AI & Integration Protocols: Solid working familiarity with autonomous agent patterns, MCP (Model Context Protocol), function calling, tool use, and structured evaluation benchmarks.

Security & Auth: Deep understanding of OAuth 2.0 flows, enterprise multi-tenancy, granular permission matrices, and token lifecycle management.

Execution Velocity: A builder-first mindset with a bias for shipping minimal, highly reliable wedges over speculative complexity.

What We Offer

Significant co-founder equity stake finalized upfront.

Direct ownership of the core technology defining a new category in consumer AI and agent verification.

- Active pipeline targeting top global accelerators and venture backers.

📌 Technical Co-Founder (Bengaluru)
🏢 EternUp
📍 Bengaluru