Ecommerce Performance Optimization: Faster Pages and Checkout
We find what slows your store, from images and scripts to servers and integrations, then fix it and test every change before release.
Discuss your store’s performance- 4.9/5 on Clutch
- 431+ projects delivered
- 14 years on the market
Trusted by
Partner of
- Adobe
- Shopware
- BigCommerce
- Shopify Plus
- Emporix
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4.9/5
Overall review rating by Clutch
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431+
Successfully delivered projects
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3.5 yrs+
Avg engagement duration
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14 yrs
On the market
When you need performance optimization
Shoppers wait for pages, filters and checkout to respond. Optimization finds the real bottleneck before anyone rebuilds the store.
Mobile product pages load slowly
Large images, heavy scripts and third-party widgets delay the main product image, especially on phones and slow networks.
The store slows down under load
Sales, campaigns or seasonal peaks bring more traffic, and pages, search or checkout respond slowly or fail.
Checkout waits for other systems
Payment, ERP or shipping integrations hold up the cart and checkout, and shoppers abandon orders while waiting.
Performance optimization use cases
Performance work pays off when a specific shopping journey is slow and you need the cause, not guesses.
Typical situations where performance optimization delivers the most value:
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Poor Core Web Vitals
Search Console flags slow LCP, INP or layout shifts on key templates, and you need to know which fix matters.
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Preparing for a sales peak
Black Friday or a big campaign is coming, and you need to test how the store handles more traffic.
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Slow search and filters
Large catalogs make search, layered navigation and category pages slow, and shoppers wait after every filter they apply.
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Too many apps and extensions
Years of added apps, extensions and tracking scripts slow every page, and nobody knows which ones are still needed.
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Slow ERP or payment calls
Prices, stock or payments come from other systems, and slow responses hold up the cart, checkout or order creation.
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Slowdown after a release or migration
A new theme, platform upgrade or migration made the store slower, and you need to find what changed and why.
Trusted in our clients’ own words
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5.0
What is most impressive is that they operate as a true strategic partner, not just a vendor.
The impact on our business has been transformative... Their proactive, forward-thinking approach is unique. They are constantly three steps ahead, bringing new ideas for our roadmap and pushing us to innovate in areas like customer journey, operations, and scalability.
Read full review
Tarek Yafi
Co-Founder at Undrgoods
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5.0
They are truly excellent in all aspects, and it’s a pleasure working with them.
They really care for the business and delivering great outcomes for us - they work work, diligently and strive for quality… Really experienced and right attitude of people: highly-skilled, intelligent, passionate about their work. Internal processes are excellent: well-organised, clear, repeatable.
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Dr. Petros Demetriades
CTO, Untamed Cat Food Ltd
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5.0
We especially liked their level of professionalism and attention to detail.
Dinarys effectively addressed all aspects of the project. The team’s ability to adhere to the agreed schedule was exemplary. Dinarys is very flexible and responds quickly to dynamically changing requests. All our expectations were met.
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Joseph Frank
CEO, Kaizen Technology Solutions
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5.0
Dinarys GmbH consistently meets our expectations and delivers high-quality work throughout the project.
They consistently prioritized our needs and vision. They were quick to adjust strategies when needed. They prioritized delivering high-quality work rather than rushing to meet quotas. Their team showed deep knowledge and skills in mobile app development.
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Yann Rigo
CIO, Panodyssey
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5.0
Their ability to communicate effectively while maintaining a positive attitude made the entire process smooth.
Dinarys brought extensive technical expertise to the table, consistently delivering solutions that met our needs with precision and innovation. One of the most unique aspects of working with Dinarys was the excellent "chemistry" between our team and theirs. This synergy made it easy to tackle challenges and move the project forward with confidence.
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Aaron Freitag
Managing Director, myfelt GmbH
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Read our reviews on Clutch
Compliance and partner status
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GDPR compliant
See our privacy policy -
HIPAA compliant
See our healthcare work -
Adobe Certified Solution Partner
As stated on our Clutch profile -
Shopware Certified Solution Partner
As stated on our Clutch profile -
Certified BigCommerce Partner
As stated on our Clutch profile
Agentic SDLC
AI-powered performance optimization
AI helps our engineers sift logs, traces and Core Web Vitals reports to spot likely bottlenecks. Engineers verify each finding and test every fix before release.
Agents at every stage, engineers steering
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Plan
Agents draft specs, user stories and acceptance criteria from your tickets, docs and code. Engineers sharpen them with you.
- Claude Code
- OpenAI Codex
- MCP
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Audit and estimate
Agents map your codebase, dependencies and risky modules before we quote, so estimates rest on facts.
- Claude Code
- Cursor
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Build
Coding agents work in your repository with project rules and context. Engineers steer and own the design.
- Claude Code
- Cursor
- GitHub Copilot
- OpenAI Codex
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Test
Agents write unit and end-to-end tests with every change, so testing stops being the bottleneck.
- Playwright
- PHPUnit
- Pest
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Review and secure
Every pull request gets an AI review and a security scan. A senior engineer approves before merge.
- CodeRabbit
- Semgrep
- Snyk
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Ship and operate
Quality gates run in CI on every change. Agents help trace incidents from logs and alerts.
- GitHub Actions
- Sentry
- Langfuse
Agents take the heavy lifting. Senior engineers set direction, review every change and own what ships.
AI platform stack
What we use to build agents and AI features into stores, portals and back-office tools.
- Models
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- Anthropic Claude
- OpenAI GPT
- Open-weight models
- Agent frameworks
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- LangGraph
- OpenAI Agents SDK
- Claude Agent SDK
- Model Context Protocol
- Retrieval (RAG)
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- pgvector
- Qdrant
- Elasticsearch
- OpenSearch
- Enterprise AI cloud
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- Amazon Bedrock
- Azure OpenAI
- Evals and guardrails
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- Langfuse
- Promptfoo
- Evals in CI
- In commerce
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- Semantic search
- Recommendations
- Product content
- Support agents
- Demand forecasting
Engineering stack
The platforms and tools under every project.
- Commerce and PIM
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- Adobe Commerce (Magento)
- Shopify Plus
- BigCommerce
- Shopware
- Spryker
- Salesforce Commerce Cloud
- commercetools
- Pimcore
- Languages
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- PHP
- TypeScript
- Python
- Kotlin
- Swift
- Frameworks
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- Laravel
- Symfony
- Node.js
- React
- Next.js
- Vue
- Data
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- PostgreSQL
- MySQL
- MongoDB
- Redis
- Elasticsearch
- Kafka
- RabbitMQ
- Cloud and DevOps
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- AWS
- Google Cloud
- Azure
- Docker
- Kubernetes
- Terraform
- GitHub Actions
- GitLab CI
- Bitbucket Pipelines
- Monitoring
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- Grafana
- Prometheus
- ELK Stack
- Sentry
Our performance optimization services
Pick one service or a full review. Each starts with the shopping journey that needs to work better.
Site speed optimization
We fix slow images, scripts, caching and server responses on the templates your customers use most.
Load testing
We test how your store handles heavy traffic in a separate environment and show where it slows or fails.
User experience optimization
We improve navigation, layout, search and filters so shoppers move from browsing to checkout with fewer delays.
Security testing
We check that speed changes keep logins, sessions, payments and customer data protected, and test security within an agreed scope.
How we work
We start with one slow journey, fix the confirmed cause and measure the result before moving on.
1. Find the bottlenecks
We measure load times, server response and real-user data on your key pages to find what slows them down.
2. Optimize the architecture
We change templates, code, caching or infrastructure, starting with your platform’s native features before any custom work.
3. Test and monitor
We test cart, checkout and payments after each change, release it with a way back and monitor the results.
4. Refine over time
We review new data after release and plan further improvements as your catalog, traffic and features grow.
Performance optimization case studies
Authentic T-Shirt Company: B2B speed and a new B2C store
Challenge
A Canadian apparel distributor’s B2B website needed better performance, and its retail segment needed a new store linked to the ERP.
What we delivered
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B2B website performance optimization
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New Magento 2 retail store
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Integration with the existing ERP
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Custom features and third-party extensions
Result
27% higher productivity, 9% more revenue and 19% shorter checkout time.
Read the full case
Lappu: Shopify store with a live configurator
Challenge
A Swedish shop for personalized stickers needed a responsive Shopify store and a real-time configurator that keeps ordering quick.
What we delivered
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Shopify storefront and frontend development
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Laravel and React sticker configurator
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Printer connector for production orders
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Functional and cross-device testing
Result
Faster load times and stable interactions, with a configurator that responds without delays.
Read the full case
SpieleMax: Magento 2 store optimization
Challenge
A German children’s products retailer with about 50 branches had a Magento 2 store with bugs and weak performance.
What we delivered
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Bugs from previous vendors fixed
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Store performance optimized
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Six new extensions integrated
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Loyalty system built as a separate service
Result
88% revenue growth, a 15% larger average order and 10% better customer retention.
Read the full case
Why companies choose Dinarys
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01
Delivery governance built into engineering
We bring structure, predictability, and control into software delivery.
Our approach is shaped by PMI-based project management, quality gates, risk management, and a success-first delivery culture.
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02
Accountable engineering
We do not only take tasks and write code.
We analyze the business and technical context, identify the real bottleneck, challenge weak assumptions when needed, and take responsibility for the technical outcome.
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03
Senior expertise for CTO-led execution
We support technical leaders with experienced engineers, architecture expertise, and practical roadmap execution.
This helps CTOs and Fractional CTOs stay strategic while having a reliable team to execute.
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04
Curated teams, not generic outstaffing
Every dedicated team is built around the client’s actual requirements, workflow, culture, risks, and delivery context.
We assess technical skills, soft skills, project fit, culture fit, communication style, and risk factors before proposing engineers.
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05
Practical AI, from the process
We start from the business process, compare platform features, ordinary automation and AI, and use AI only where it removes real work.
Every AI step gets quality checks and human oversight.
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06
A partner that has your back
Good delivery depends on trust, honest communication, and people who care about the outcome.
We stay close to the problem, speak openly, involve the right experts, and do not leave clients alone with delivery risk.
Frequently asked questions
Targeted work that makes browsing, search and checkout respond faster. It combines measurement, diagnosis, code and server fixes, and regression tests, usually without changing your platform.
It can remove friction that stops shoppers, but a faster page alone does not promise more orders. We agree on order and error metrics before changes and compare results after.
Images, scripts, themes, caching, server setup, database queries and third-party services such as payments or ERP. We start with the factors your data points to.
Core Web Vitals (LCP, INP and CLS) for real users, plus lab tests, server response times, error rates and completed orders on the journeys you choose.
We test cart, prices, login, payment and order creation after every change and keep the previous version ready to restore if a check fails.
It depends on your platform, the number of journeys and integrations, and how clear the cause is. We estimate after a short review of your store and data.
Discuss your store’s performance
Share the slow pages or journeys and your platform. Please don’t send passwords or customer data. We’ll suggest the first step.