Deliberately small. A senior Shopify engineer leads every engagement end to end, supported by specialists in performance, integrations and QA who are pulled in for the parts of the work that need them.

Will a junior developer end up writing our code?

No. Every line that ships on your store is written or directly reviewed by the senior engineer who audited it. There is no hand-off after the scoping call.

Do you subcontract work?

No anonymous outsourcing. Where a specialist is involved, you are told who they are, what they are responsible for and how their work is reviewed before it merges.

What time zones do you cover?

We work with teams in the USA, Canada, UK, Australia and Europe, with overlapping hours agreed at kickoff and launch windows scheduled around your traffic, not ours.

Can you work alongside our in-house developers?

Yes. We regularly work inside a client repository, review their pull requests and leave documented architecture decisions their team can carry forward.

Team

Senior engineers.
No layers in between.

HeapByte is a small, senior team. The engineer who audits your store writes the code, reviews the pull requests and joins the launch call. Specialists come in for the slice of work they own, and everything they ship is reviewed before it merges.

Model: Senior-only delivery
Experience: 8+ years each
Coverage: US · UK · EU · AU
Hand-offs: None

Operating model

The person who understands your store is the person typing.

Most agencies grow by adding translation layers — account managers, delivery leads, offshore pods. Every layer loses information about why a decision was made. We removed the layers instead, and accepted the ceiling on how much work we can take at once.

01The people

N1Placeholder profiles. Send real names, bios and photos and these rows swap over without any layout work.

Five senior engineers. Each one owns a discipline end to end and reviews the work of the person next to them.

01
Adab Ul Qayyum
Founder & CEO · PRODUCT VISION · GROWTH · LEADERSHIP
Leads HeapByte’s overall direction, from defining the company vision and shaping its service offerings to building long-term client relationships and driving sustainable growth. Adab works across strategy, product direction, and business development to ensure every engagement aligns with the company’s standards and delivers meaningful value to clients.
Role
Company leadership
Focus
Strategy & growth
Approach
Product-led delivery
Business Strategy
Product Strategy
Leadership
Business Development
Client Relations
02
Abdul Razaq
CMS / CTO Head · ARCHITECTURE · DEVELOPMENT · SYSTEMS · DELIVERY
Leads HeapByte’s technical direction across CMS platforms, web development, and internal engineering systems. Abdul focuses on building reliable, scalable solutions, establishing development standards, and guiding technical decisions from architecture through implementation and delivery.
Role
Technical leadership
Focus
CMS & architecture
Approach
Scalable systems
Shopify eCommerce Architect
Product Strategy
Senior CTO Expert
Senior WordPress Developer
03
Arslan Raza
Sr. Shopify Dev / Sales Head · BUSINESS DEVELOPMENT · CLIENT RELATIONS · SALES STRATEGY
Leads HeapByte’s sales and business development efforts, focusing on building strong client relationships and identifying opportunities that align with the company’s capabilities. Arslan works closely with prospects and clients to understand their goals, shape the right solutions, and guide engagements from initial conversations through successful delivery.
Role
Sales leadership
Focus
Business development
Approach
Client-first growth
Business Development
Sales Strategy
Client Relations
CRM
Shopify development
04
Muhammad Ahmad
CMS dev/Shopify developer · SHOPIFY · THEME DEVELOPMENT · CUSTOMIZATION · DELIVERY
Works on CMS and Shopify development at HeapByte, turning design and business requirements into functional, maintainable web experiences. Muhammad focuses on Shopify customization, theme development, CMS implementation, and delivering responsive solutions tailored to each project’s needs.
Role
CMS development
Focus
Shopify solutions
Approach
Clean & reliable builds
Shopify
Liquid
WordPress
JavaScript
Git
05
Muhammad Kashif
Frontend Developer & Shopify Developer · SHOPIFY · UI DEVELOPMENT · THEME CUSTOMIZATION · PERFORMANCE
Builds modern, responsive web experiences at HeapByte with a focus on frontend development and Shopify solutions. Muhammad works across custom interfaces, Shopify themes, Liquid development, and frontend integrations to create fast, polished, and maintainable digital experiences that align with business and user needs.
Role
Frontend & Shopify
Focus
UI & theme development
Approach
Performance-driven builds
Shopify
Custom Shopify Apps
Liquid
Next.js

02How we work together

Five rules that decide who touches your store and how their work gets checked.

01
One named engineer, start to finish
You are introduced to the person doing the work at the audit stage, and that person stays through handover. No account manager sits between you and the code.
02
Specialists join for the part they own
Performance, integrations and app work pull in a specialist for that slice only. Their scope is written down, and the lead engineer reviews everything before it merges.
03
Review is not a formality
Every pull request is read by a second senior pair of eyes against the architecture decisions agreed at scope. Disagreements get resolved in the repository, in writing.
04
Context is documented, not memorised
Decisions, rejected options and known trade-offs live in the repo so a second engineer can take over in hours if life happens. Continuity is a process, not a promise.
05
We staff to capacity, not to pipeline
We turn work down rather than assign it to someone who was not part of the original audit. That is the constraint that keeps the rest of this true.

03What day one looks like

Before anyone proposes a solution, the engineer assigned to you pulls the theme into version control and measures the store as it actually is. The findings document comes before the quote — every time.

engagement/day-one.sh

1# Day one on a new engagement2shopify theme pull --store "client.myshopify.com"3git init && git checkout -b audit/baseline4 5# Measure before touching anything6lighthouse-ci collect --numberOfRuns=57node scripts/audit-scripts.mjs   # third-party weight8node scripts/theme-sprawl.mjs    # unused sections9 10# Output: a written findings doc, then a quote

04The bar

01
Eight years is the floor, not the headline
Everyone who touches client code has shipped production Shopify work for years, including at Plus scale, and has been on the wrong end of a launch that went badly.
02
Can explain the trade-off to a non-engineer
If a decision cannot be explained to a merchandiser in two sentences, it is not understood well enough to ship.
03
Comfortable saying no
The ability to tell a client they do not need the thing they asked for is a hiring criterion, not a personality quirk.

05The record behind the team

Years on Shopify

Projects delivered

Job success score

Tracked hours

Verified on Upwork, where we hold Top Rated status. Clients include Comfy Koalas, Adored Vintage, Tokyo Seta and Atlas Stitch — see the case studies for the engineering detail behind each.

Shopify PlusHydrogenLiquidGraphQL Admin APIShopify FunctionsCheckout ExtensibilityRemixTypeScriptCore Web VitalsERP integrationShopify PlusHydrogenLiquidGraphQL Admin APIShopify FunctionsCheckout ExtensibilityRemixTypeScriptCore Web VitalsERP integration

06Questions about the team

Work with us

Talk to the engineer, not a salesperson.

Send the store URL and what is breaking. The person who replies is the person who would do the work.

Book Consultation Request Shopify Audit

Senior engineers.No layers in between.

Adab Ul Qayyum

Abdul Razaq

Arslan Raza

Muhammad Ahmad

Muhammad Kashif

One named engineer, start to finish

Specialists join for the part they own

Review is not a formality

Context is documented, not memorised

We staff to capacity, not to pipeline

Eight years is the floor, not the headline

Can explain the trade-off to a non-engineer

Comfortable saying no

How big is the team?