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Saad Sultan

Resume

Professional experience, skills, and accomplishments.

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Professional Summary

Full-stack software engineer with 6+ years of experience building scalable SaaS platforms and production systems using TypeScript, Node.js, Vue.js, PostgreSQL, and MongoDB. Experienced in delivering end-to-end product features across frontend and backend, including component architectures, REST APIs, async workflows, billing systems, integrations, AI-powered document processing, and complex domain logic. Strong product engineering mindset with proven ability to design and deliver large platform capabilities while improving reliability, maintainability, and developer productivity.

Work Experience

Curia(via Remotebase)

Remote

Legal-tech SaaS platform used by property conveyancers to automate contract review, document analysis, and report generation across the Australian property market.

Full-Stack Engineer

Feb 2025 – Present
  • Contributed to the platform's dynamic report template system - worked on draft/publish workflows, version history, conditional rule evaluation, per-state template configuration, and report calculation consolidation.
  • Contributed to a WYSIWYG report template editor built on Tiptap, implementing custom Node extensions for conditional content blocks and dynamic merge tags, visibility condition builders, and editor preview modes.
  • Extended Stripe billing infrastructure with account-level plan management UI and differentiated pricing logic for standard vs complex contract reviews.
  • Extended the automated document processing pipeline - built new processing tasks, added timeout safeguards, and designed a real-time task progress tracking API used by the frontend for live status indicators.

Qureos(via Remotebase)

Remote

AI-powered recruitment platform connecting employers with candidates using automated matching and interview tools, serving millions of candidate profiles.

Software Engineering Manager

Jan 2024 – Jan 2025
  • Iterated on 'Iris', the AI candidate recommendation engine, through multiple algorithm versions, migrating from ChromaDB to Weaviate to Elasticsearch and reducing search latency from ~60 seconds to near-real-time across millions of profiles.
  • Built a multi-channel outreach campaign system from the ground up supporting LinkedIn (SalesRobot) and email (Nylas) channels with multi-step sequences, scheduling with timezone support, and real-time campaign analytics.
  • Designed and executed a zero-downtime storage migration from AWS S3 to GCS for a platform serving ~6 million users, replacing the proposed bulk database update with a backend URL transformation layer to eliminate migration risk and reduce cross-cloud infrastructure costs.

Senior Software Engineer

Jan 2022 – Dec 2023
  • Architected and built the initial version of 'Iris', an AI-powered candidate recommendation engine using OpenAI embeddings and ChromaDB vector database, establishing the foundation for matching job posts against millions of candidate profiles.
  • Built a rate-limit-resilient AI service layer with round-robin key rotation across 30+ OpenAI API keys, automatic retries with exponential backoff, and centralised request management, enabling reliable high-throughput AI processing across real-time and background workloads.
  • Built subscription cancellation flows handling cascading disenrollment from learning paths and masterclasses, and implemented credits carry-over logic on subscription renewal within the platform's Stripe billing system.

Xavor Corporation

On-site / Hybrid

Software services company building enterprise solutions. Worked on xEngine, a configurable data integration platform enabling synchronisation across PLM, ERP, and CRM systems for clients in medical devices, manufacturing, and telecom.

Senior Software Engineer

Jul 2021 – Dec 2021
  • Turned around a high-friction client engagement by stabilising failing integrations and rebuilding trust through consistent delivery and clear incident communication.
  • Took ownership of all xEngine client integrations after team restructuring, serving as the primary point of contact and managing end-to-end delivery with minimal supervision.
  • Contributed to early development of a cloud-hosted xEngine (iPaaS-style) using .NET Core, including re-architecting components and designing a marketplace-based approach for connector management.

Software Engineer

Jun 2019 – Jun 2021
  • Built and maintained configurable data pipelines synchronising data across PLM (Agile PLM), ERP (Dynamics AX/365, SAP, NetSuite), and CRM (Salesforce) systems, supporting 1-to-1 and 1-to-many workflows.
  • Designed and implemented multiple ingestion and delivery strategies including REST/SOAP APIs, SFTP file polling, push-based APIs, and Azure Blob Storage uploads for GB-scale file transfers.
  • Implemented OAuth 2.0 authentication (Okta) and role-based access control for Xavor's Document Repository Application, covering both frontend and backend changes.

Techlogix

On-site

Software Engineer Intern

Jun 2018 – Aug 2018
  • Refactored frontend search and filter functionality in an AngularJS application.

Technical Skills

Languages

TypeScriptJavaScriptPHPC#JavaC++

Frontend

Vue.jsReactNext.jsTailwind CSSHTML5CSS3Heroicons

Backend

Node.jsNestJSExpressCodeIgniter.NET CoreREST APIs

Databases

PostgreSQLMongoDBMySQL

Cloud & Integrations

Microsoft Azure (AZ-204)AWSGoogle Cloud PlatformElasticsearch

AI & Data

OpenAI APIsPrompt EngineeringVector Databases (ChromaDB, Weaviate)

Tools & Platforms

DockerGitPostmanDBeaverMongoDB CompassStripeTiptapClerkAuth0SendGridNylasSentryNewRelic

Education

BS Computer Science

Aug 2015 – Jun 2019

FAST – National University of Computer & Emerging Sciences (NUCES)

Lahore, Pakistan

CGPA: 3.45

  • Named in Dean's Honor List in 4 semesters

Certifications

  • Microsoft Certified: Azure Developer Associate (AZ-204)
    Jun 2021 - Jun 2023

    Microsoft

    View on Credly

Publications

Dynamic Cloud Resource Allocation

Nov 2019, Karachi

8th International Conference on Information and Communication Technologies (ICICT) – IBA

View on IEEE Xplore

Awards & Achievements

Winner - Remotebase Tech Hackathon

July 2023

Led a team of 5 engineers to build an AI-powered interview preparation platform.

  • Designed the prompt architecture enabling the system to generate interview questions from a candidate's resume and job description.
  • Built an AI-driven interview workflow that analyzed candidate responses, generated contextual follow-up questions, and determined interview completion.
  • Implemented structured report generation summarizing candidate performance and responses.
  • Developed a working MVP demonstrating an automated interview preparation system with potential extensions for AI-assisted hiring workflows.

Selected Impact Highlights

  • Designed and built the dynamic report template system at Curia from scratch - the platform's primary differentiator enabling law firms to customise contract review reports.
  • Architected 'Iris', an AI candidate recommendation engine at Qureos using OpenAI embeddings and vector databases, matching jobs against millions of profiles.
  • 2nd highest contributor across the Qureos codebase (~1,984 of ~10,100 total commits), delivering features across AI matching, outreach campaigns, ATS, LMS, and payments.
  • Delivered end-to-end full-stack SaaS features across document processing, billing systems, analytics suites, CRM integrations, and mentorship platforms.
  • Extended Stripe billing at Curia with plan management UI and complex review pricing differentiation, and built subscription lifecycle and credits carry-over features at Qureos.
  • Implemented complex financial calculation engines with expression-based rule storage used in real-world Australian property transactions.
  • Improved engineering productivity through architecture proposals, static config elimination, controller refactoring, and migration tooling.
  • Known for identifying edge cases early in development, preventing production bugs and improving delivery timelines.

Freelance & Independent Projects

Hisab - Payment Ledger Management System

Built a ledger management system with a native Android application and a PHP (CodeIgniter) admin panel for tracking transactions and account balances.

Cardiometabolic Insight

Developed a native Android application providing healthcare professionals with access to cardiology research, studies, and educational video resources.

Car Inventory System

Built a PHP (CodeIgniter) admin panel for managing vehicle inventory and generating dealership contract agreements.

TimeTrip - Ride Hailing Application

Developed customer and driver Android applications supporting ride requests and trip management.

Agri-Bazaar

Developed an Android application connecting farmers, wholesalers, and businesses to facilitate agricultural product trading.