Arslan Javed Senior Ruby on Rails Developer and Team Lead

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Spot On Fence — IoT Smart Pet Collar Platform

Spot On Fence

Dec 2023 - Dec 2024 (1 year 1 month)

GPS collar and mobile app platform with 20,000+ weekly active users, real-time device communication, and cellular subscription management.
• Part of the team building the ActionCable WebSocket layer for bidirectional, real-time communication between the app and physical collars.
• Worked on the backend API consumed by iOS/Android clients and the admin panel — covering collar telemetry, user state, and subscriptions.
• Designed and built the Amazon SQS integration from scratch — thread-based, order-preserving message processing to handle high-throughput device events without race conditions.
• Contributed to Kore Cellular API integration for activating/deactivating cellular service tied to subscription events, and Recharg

Syncta — Backflow Testing SaaS

Syncta

Sep 2018 - Nov 2023 (5 years 3 months)

Field service platform managing backflow test reports, scheduling, and invoicing.
• Tracked down and fixed memory bloat using derailed_benchmarks, stackprof, and memory_profiler; swapped in jemalloc to tame fragmentation in a multi-threaded Sidekiq environment.
• Dockerized the app and test suite; migrated deployments from AWS EBS to AWS ECS, with Kamal adopted for streamlined container deployments.
• Used raw SQL for bulk dataset imports where ActiveRecord was too slow.
• Maintained an iOS app (Swift) — bug fixes and deprecation patches across OS upgrades.

Purple Carrot — Meal Kit Subscription Platform

Purple Carrot

Nov 2021 - Nov 2023 (2 years 1 month)

High-scale DTC platform with regional fulfillment, customizable meal plans, and a content-driven storefront.
• Part of the team building and maintaining GraphQL APIs across a complex subscription domain.
• Worked on Braintree and Apple Pay checkout, SSO, and Builder.io CMS integration.
• Contributed to SKU availability by region — surfacing only fulfillable products based on customer location.
• Worked on shipment tracking via FedEx, OnTrac, and LaserShip APIs, subscription pause/resume flows, and customer meal preference management.
• Used Ransack for admin search/filtering and connected Zendesk to order and subscription even

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Bioverge — Healthcare Investment Platform

Bioverge

Feb 2017 - Jan 2018 (1 year)

Equity crowdfunding platform for early-stage healthcare and biotech startups.
• Built the entire investment flow end-to-end — DocuSign for document signing, Plaid for identity/bank verification, Dwolla for ACH payments, and AltoIRA for retirement account investments.
• Implemented AASM state machines to reliably model investment lifecycle states, replacing fragile conditional logic.
• Delivered a full React frontend overhaul via Webpacker, replacing the legacy ERB-heavy UI.

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Hypely — Social Media Analytics Platform

Hypely

Jun 2018 - Jan 2019 (8 months)

All-in-one marketing platform for scheduling, tracking, and analyzing Instagram, Twitter, and YouTube campaigns.
• Integrated YouTube, Twitter, and Instagram APIs for data ingestion and per-user stat generation.
• Replaced expensive PostgreSQL COUNT queries on a ~3M row table with ElasticSearch aggregations, dramatically cutting query time.
• Set up a Squid proxy server for authenticated headless browser scraping at scale; automated AWS deployments via Bitbucket Pipelines.

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Legal Hero — Legal Advisory Platform

Legal Hero

Jan 2016 - Jan 2017 (1 year 1 month)

Advisory platform connecting SMEs and startups with legal professionals.
• Part of a monolith-to-microservices migration and Rails 4 to 5 upgrade, reducing security exposure and improving scalability.
• Worked on replacing REST with GraphQL and adding real-time chat and video via ActionCable and Twilio.

Arslan Javed

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