Sep 2023 – Mar 2025
Contact Center Specialists · Senior Full Stack Developer
Multi-channel
SMS, Voice, Email, Social
No-code
Drag-and-Drop Builder
10DLC
Telecom Compliant
VOIP
Call Automation
~60%
API Response Time Reduced
30+
Manual Workflows Eliminated
1000s
Real-time Synced Users
At Contact Center Specialists, I built backend services and integrations for Helium — a multi-channel marketing-automation and contact-center platform spanning SMS, voice, email, and social, with a node-based, drag-and-drop workflow builder — a Trigger/Action canvas with sequential, branching, and looping logic — for no-code campaign creation.
Running campaigns across SMS, voice, email, and social meant separate tools
Non-technical teams needed to build automation without engineering help
US 10DLC and telecom rules required campaign registration and compliance
Contacts were fragmented across multiple platforms
VOIP calling and marketing flows needed automation and observability
Multi-channel automation across SMS, voice, email, and social
A node-based Trigger/Action workflow canvas (sequential, branching, looping) for no-code campaigns
Sinch integration for programmatic VOIP calling and messaging
Campaign Registry API integration for US 10DLC compliance
Unified multi-platform contact sync and campaign analytics
Developed new APIs and third-party integrations (Facebook, Sinch, others)
Built the custom workflow engine and drag-and-drop campaign builder UI
Integrated the Campaign Registry API for 10DLC compliance
Implemented VOIP call automation
Built unified multi-platform contact sync and campaign analytics
Implemented API-level IP restriction and geo-fencing in Go on GCP
Delivered multi-channel campaign automation across SMS, voice, email, social
Built a no-code, node-based Trigger/Action workflow canvas
Achieved US 10DLC compliance via Campaign Registry integration
Added API-level IP and geo controls for platform security
Let non-technical teams build campaigns without engineering
Unified fragmented contacts and channels into one platform
Kept outbound campaigns telecom-compliant
Automated VOIP calling and marketing workflows at scale
Backend
Go, REST APIs
Frontend
React, Redux
Data
MySQL, MongoDB, Google CloudSQL
Cloud
GCP
Integrations
Sinch (VOIP/SMS), Facebook API, Campaign Registry (10DLC)
Security
OAuth, API IP allowlisting, geo-fencing
Collaboration
Confluence
High-performance APIs and microservices
Stripe, Shopify, Microsoft Graph, telecom
LLM workflows, document processing
OAuth, Entra ID, Cognito
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