Cosellr
Cosellr was a net-new build with an aggressive timeline: deliver a real, usable product—not a prototype—capable of running an end-to-end sales workflow. We engineered the MVP around core product pillars (automated prospecting, hyper-personalized outreach, automated nurturing, and in-call agentic AI) while building production-grade foundations from day one: security controls, observability, CI/CD, and scalable architecture. The outcome was a launch-ready system designed to iterate quickly post-release without accumulating early-stage fragility.
Rapid MVP Development (8-week build)
Full-Stack Product Engineering
AI Agent Productization
Platform Engineering & Cloud Architecture
Security & Access Controls
Observability & Production Readiness
CI/CD and Release Engineering
Cosellr needed a net-new MVP that could demonstrate a complete ‘contact to contract’ workflow: identify prospects, generate outreach, nurture leads, and support the sales cycle through meetings. There was no legacy system to extend and no baseline usage to optimize against—so the challenge was shipping a coherent, production-ready foundation quickly, while leaving room for fast iteration and feature expansion post-launch.
We executed an 8-week, sprint-driven build focused on (1) shipping an end-to-end workflow users could complete, (2) establishing a production-grade foundation from day one, and (3) ensuring AI features were implemented as reliable systems—tool-driven, observable, and controllable—rather than prompt-only demos.
Implemented automated prospecting workflows aligned to ICP targeting.
Added targeting inputs and configurable constraints to ensure prospect selection stayed relevant.
Created data contracts for prospect profiles and research outputs to keep downstream steps consistent.
Built outreach generation workflows designed to produce natural, context-aware messages at scale.
Implemented message templating and structure so teams could maintain brand voice and compliance.
Introduced safeguards to prevent off-brand outputs and reduce hallucinated claims (grounding + constraints).
Implemented automated nurturing logic so leads don’t fall through cracks (open/no reply, delayed clicks, re-engagement patterns).
Added monitoring/trigger infrastructure to detect prospect signals and queue follow-ups.
Ensured nurturing actions remained explainable (why this follow-up, why now).
Built meeting scheduling flows and outcome capture patterns.
Implemented meeting support primitives (recording/transcription hooks, summaries, next steps) as a foundation for advanced in-call assistance.
Defined structured ‘post-meeting artifacts’ to help close loops reliably (recap, tasks, follow-up drafts).
Added real-time agentic assistance during calls (respond to commands, pull context/resources, generate support artifacts).
Implemented natural-language onboarding flows to reduce setup friction and improve time-to-first-value.
Applied guardrails to ensure safe tool usage, consistent behavior, and predictable outputs.
End-to-end testing across the full workflow: onboarding → outreach → nurture → meetings → follow-ups.
Performance and reliability pass: retries/timeouts, cost controls, error handling, and fallback behaviors.
Release readiness: CI/CD pipelines, deployment runbooks, monitoring/alerting baselines, and rollback plan.
8 Weeks; Sprint-driven build with an end-to-end workflow shipped early, then hardened weekly.
Defined end-to-end MVP workflow and UX skeleton. Established baseline ops requirements (logging, deploy patterns).
Implemented prospect profile and research contracts. Built targeting inputs and selection workflows.
Implemented hyper-personalized outreach generation. Added brand-voice constraints and formatting templates.
Implemented nurture triggers and follow-up workflows. Added explainability hooks for why follow-ups occur.
Built meeting scheduling and outcome capture patterns. Implemented post-meeting artifact generation primitives.
Added real-time assistance foundation and onboarding flows. Implemented safety constraints and tool-call guardrails.
E2E testing and reliability pass (timeouts, retries, fallbacks). CI/CD, monitoring baselines, runbooks, and rollback plan. Production launch readiness sign-off.
end-to-end delivery • From greenfield start to production-ready MVP.
within 8 weeks • Prospecting, outreach, nurturing, and sales-cycle/meeting support shipped as a single cohesive system.
post-launch target • Estimated onboarding goal: connect channels + define target + launch first campaign. Replace with product analytics later.
by launch • Estimate: CI/CD, observability baseline, runbooks, and rollback readiness established early. Replace with internal checklist stats.
first 30 days • Estimate: enabled by CI/CD + modular architecture. Replace with actual release logs.
30 days post-launch • Creative estimate for net-new product; replace with funnel analytics later (trial → activated org).
Get Unlimited PTO, 401(k), Health & Dental Insurance, and many more perks when you join our team.
Have questions? Our community is here to help. Learn more about our community
and Counting
We Are Proud to be an
International Employer