Sufian Saeed

Go Developer | GoHighLevel CRM Engineer

linkedin.com/in/sufian-saeed Pakistan · working remotely with international (mostly US) clients

Summary

Go engineer who extends GoHighLevel beyond its native limits. Results-driven Backend Engineer with 4+ years of experience building distributed systems and microservices in Go. Proven success as a founding engineer in fintech and AI SaaS startups, designing scalable backends handling a large number of daily transactions. Skilled in PostgreSQL, DynamoDB, AWS, and cloud-native architectures, with expertise in AI integrations, GoHighLevel CRM engineering, and secure, enterprise-grade APIs. Ships faster with AI-assisted development (Claude Code) and has delivered end-to-end solutions for US-based clients.

Professional Experience

Freelance Backend Engineer & GoHighLevel Consultant

July 2026 – Present
Self-Employed · Remote
  • Delivering Go backend services and GoHighLevel CRM solutions for international clients, from requirements gathering through deployment and support.
  • Building complete GHL setups (automations, funnels, websites, and pipelines) along with custom-coded integrations for workflows GoHighLevel does not support natively.
  • Using Claude Code for AI-assisted development, enabling fast turnaround on custom features while maintaining production-grade code quality.

Backend Developer & CRM Specialist

April 2026 – July 2026
GHL Sales Operator · Remote
  • Engineered custom-coded solutions in Go that extend GoHighLevel beyond its native capabilities, delivering features the platform does not allow out of the box.
  • Built custom dashboards and sales scoreboards giving client teams real-time visibility into pipeline health and rep performance.
  • Integrated Go services with the GoHighLevel API and webhooks to sync contacts, opportunities, and pipeline data across external systems.
  • Designed and deployed end-to-end GHL solutions: workflow automations, sales funnels, websites, and multi-stage pipelines.
  • Served as the go-to GoHighLevel expert for US-based clients, translating business requirements into scalable CRM and automation systems.
  • Accelerated delivery with Claude Code for AI-assisted development, refactoring, and rapid prototyping of custom integrations.

Senior Software Engineer

January 2025 – April 2026
Valteria LLC · Remote
  • Designed and created the complete backend service for userubberducky.com.
  • Designed and implemented Go microservices for voice upload, transcription, and AI-based summarization (OpenAI, Gemini).
  • Integrated S3, PostgreSQL, and background workers for asynchronous transcription workflows.
  • Built secure JWT authentication, encrypted file storage, and automated file lifecycle management.
  • Implemented OAuth 2.0 (Google Sign-In) for user authentication and account management.
  • Incorporated a vector database using AWS OpenSearch to leverage context awareness.
  • Designed and created the complete backend service for openpayouts.com.
  • Developed a Go-based SaaS backend integrating with Jira via OAuth 2.0 for real-time bounty management and gamification (XP, badges, leaderboards).
  • Architected secure, scalable systems using PostgreSQL and structured logging.
  • Implemented concurrent background workers using goroutines and channels for data synchronization and processing efficiency.

Software Engineer

April 2021 – November 2023
Wanclouds Inc. · Islamabad, Pakistan
  • Led a backend team and mentored two developers, overseeing agile sprints and code reviews.
  • Designed and developed cloud-native backend tools for disaster recovery using Go on AWS and IBM Cloud.
  • Contributed to scalable architecture design, improving system modularity and maintainability.

Selected Work

Rubberducky · https://userubberducky.com

Founding Backend Engineer
AI-driven voice summarization platform — Go, PostgreSQL, AWS S3, AWS OpenSearch, OpenAI, Gemini, JWT, OAuth 2.0

OpenPayouts · https://openpayouts.com

Founding Backend Engineer
Bounty-based work platform with gamification — Go, PostgreSQL, Jira OAuth 2.0, Goroutines & Channels

Wanclouds DR Tooling

Software Engineer · Team Lead
Cloud-native disaster recovery on AWS & IBM Cloud — Go, AWS, IBM Cloud

GoHighLevel Client Work

CRM Engineer · US clients
Extending GHL beyond its native limits — Go, GHL API, Webhooks, Workflows, Funnels

Client Websites

Web Developer
Law firm & financial advisory sites — Web

Websites: UFK Partners (law firm), SKB Consultants (financial advisory)

Technical Skills

Languages
Go (Golang), JavaScript, Node.js, SQL
Backend & Cloud
Microservices, REST APIs, Goroutines & Channels, Background Workers, AWS (S3, OpenSearch, DynamoDB), IBM Cloud
Databases
PostgreSQL, DynamoDB, Vector Databases (AWS OpenSearch)
Security
JWT, OAuth 2.0 (Google, Jira), Encrypted File Storage
CRM & Automation
GoHighLevel Workflows, Funnels, Websites, Pipelines, API & Webhooks, Custom Dashboards
AI & Tooling
OpenAI, Gemini, Claude Code (AI-assisted development)

Education

Bachelor of Science in Software Engineering

September 2016 – September 2020
COMSATS University Islamabad, Abbottabad Campus

Cambridge A Levels in Pre-Engineering

March 2014 – September 2016
Beaconhouse School System, Abbottabad

Cambridge O Levels

March 2011 – March 2014
Army Burn Hall College, Abbottabad

Honors & Awards