Progressive Web App (PWA) Development
Build web experiences that feel native — offline-capable, installable on home screens, and faster than any App Store download — without the cost of two codebases.
What We Build with PWAs
Progressive Web Apps combine the reach of the web with the experience of native apps. We build PWAs that are installable, offline-capable, and score 95+ on Lighthouse — giving you mobile-app engagement without an App Store dependency.
What We Build with PWAs
Progressive Web Apps combine the reach of the web with the experience of native apps. We build PWAs that are installable, offline-capable, and score 95+ on Lighthouse — giving you mobile-app engagement without an App Store dependency.
- Service worker-based offline mode and background sync
- Web App Manifest for home-screen installation
- Push notifications via the Web Push API
- Sub-2s load time on 3G (Lighthouse 90+ score)
- Responsive design for any screen size or device
- IndexedDB-based local data persistence
PWA Technology Stack
We build PWAs using Next.js, React, and Workbox — with modern service worker caching strategies that keep users engaged even when connectivity drops.
- Next.js with next-pwa for service worker generation
- Workbox precaching and runtime caching strategies
- Core Web Vitals monitoring (LCP, INP, CLS)
- OneSignal or Firebase Cloud Messaging for push notifications
- IndexedDB + Cache API for offline data access
- HTTPS + Web App Manifest for full installability
Offline-First Architecture
Offline capability is not a checkbox — it requires deliberate caching strategy design. We architect service workers with named cache buckets, stale-while-revalidate strategies for API data and cache-first delivery for static assets, so the app works on flaky connections and survives complete network loss.
- Cache-first strategy for shell assets: HTML, CSS, JS and icon sets
- Stale-while-revalidate for API responses and frequently updated content
- Network-first with cache fallback for real-time data like product inventory
- Background sync for form submissions queued during offline periods
- Cache versioning and automatic stale cache cleanup on service worker update
- Offline fallback page: custom branded offline UI rather than Chrome’s dinosaur
Installation & App-like Experience
PWA installation requires a correctly configured Web App Manifest and a service worker with at least one cached resource — but getting users to actually install depends on a well-designed install prompt. We implement the full installation surface: manifest, prompt logic, splash screens and OS-level app shortcuts.
- Web App Manifest: name, icons (192px, 512px, maskable), theme colour and display mode
- beforeinstallprompt event capture for custom install prompt UI and timing
- iOS Safari meta tags: apple-mobile-web-app-capable and apple-touch-icon
- Splash screen configuration for iOS and Android launch experiences
- App shortcuts: deep-link shortcuts surfaced in the long-press app icon menu
- Standalone display mode: hides browser chrome for full-screen app appearance
Push Notifications & Re-engagement
PWA push notifications reach users when the browser is closed — making them the most powerful re-engagement channel available on the web. We implement the Web Push API with permission prompt best practices, rich notification templates and analytics to measure open and conversion rates.
- Web Push API with VAPID authentication for subscription management
- Firebase Cloud Messaging (FCM) as the push delivery backend
- Permission prompt timing: request after demonstrated value, not on first visit
- Rich push notifications: image, action buttons and deep-link URLs
- Notification click routing: open specific app route from notification action
- Push analytics: delivery rate, open rate and post-click conversion tracking
Performance & Core Web Vitals
PWA performance is what differentiates a great PWA from a slow web page with a manifest. We target Lighthouse 95+ with LCP under 2 seconds on 3G, CLS under 0.1 and INP under 200ms — measured with both lab tools and real-user CrUX field data.
- Lighthouse CI in GitHub Actions: block merges when scores drop below threshold
- LCP optimisation: preload critical images, font-display swap and server-push hints
- CLS elimination: explicit width/height on all media, no injected content above fold
- INP reduction: long task splitting with scheduler.postTask and input response budget
- Code splitting and lazy loading: route-level chunks for sub-100kB initial JS payload
- CrUX field data monitoring via Google Search Console and PageSpeed Insights API
Senior engineers, modern stacks, no hand-offs.
From greenfield products to long-running platforms — we build software that survives launch day and the year that follows.
Custom development
TypeScript, Node, Laravel, .NET — picked for the workload, not the resume.
- Clean-architecture by default
- Test coverage on critical paths
- Type-safe end to end
API & micro-services
REST, GraphQL and event-driven services with documented contracts.
- OpenAPI / GraphQL schemas
- Versioned + backwards-compatible
- Rate-limited + cached
Data layer
PostgreSQL, Mongo, Redis — modelled for the actual access patterns, not the ORM.
- Read replicas + sharding
- Migrations as code
- PII-aware schemas
Security baked in
OWASP-aligned reviews, secrets in vaults, dependency scans on every build.
- SAST + DAST
- Dependency CVE watch
- Audit-friendly logs
Predictable, audit-friendly delivery.
Every engagement follows the same stage cycle — so you always know what is happening, what comes next, and who owns it.
Discovery
Workshops, KPI alignment, technical baseline.
Discovery
Workshops, KPI alignment, technical baseline.
Architecture
Stack, data model, deployment topology.
Architecture
Stack, data model, deployment topology.
Build
2-week sprints, weekly demos, signed-off acceptance.
Build
2-week sprints, weekly demos, signed-off acceptance.
Harden
Load tests, security review, observability.
Harden
Load tests, security review, observability.
Launch
Cutover plan, rollback, day-one watch.
Launch
Cutover plan, rollback, day-one watch.
Operate
Managed support, optimisation, roadmap.
Operate
Managed support, optimisation, roadmap.
Replatform that scaled to 4× peak traffic.
A B2B SaaS replatform onto a modern TypeScript stack — shipped in 14 weeks with zero data loss and a 64% drop in P95 latency.
The tools we ship with.
Engineering that survives the first production weekend.
Most software fails not at launch but six months in — when traffic spikes, requirements drift and the original team rolls off. We design for that reality from sprint zero.
Architecture chosen for the workload
We pick a stack against the actual access patterns, expected load and team skill — never against trend cycles. The result is fewer rewrites, lower hosting bills, and a codebase your future engineers can navigate in an afternoon.
Tests where they pay off
Critical paths are covered with integration and contract tests; trivial getters are not. We aim for confidence at deploy time, not coverage-percentage theatre — and we wire CI to block regressions, not vanity metrics.
Observability from day one
Every service ships with structured logs, distributed traces and business-KPI dashboards. When something breaks at 2 a.m., your on-call has the timeline, the request and the user — not a haystack.
Documentation that engineers actually read
Architecture decision records, runbooks and onboarding paths live next to the code. New engineers contribute on day three, not week three — and audits stop being a fire drill.
How we make decisions.
Four non-negotiables that govern every engineering choice we make — from stack selection to incident response.
AI-assisted code review
Every pull request runs static analysis and ML-pattern checks before a human reviewer sees it — so engineers spend their review time on logic, not linting.
Observability first
Structured logs, distributed traces, RUM and alerting are wired in from sprint one. When something breaks at 2 a.m., the on-call has the full picture in seconds — not a blank Datadog screen.
Outcome-tied KPIs
Every sprint is reviewed against the business metric it was meant to move — conversion rate, latency, error budget — not story points or lines of code delivered.
Resilient architecture
Graceful degradation, idempotent retries, dead-letter queues and circuit breakers are default patterns, not afterthoughts. Systems that fail quietly are more dangerous than systems that fail loudly.
Three ways to work with us.
End-to-end delivery against a clear scope — discovery through launch with signed-off milestones at every sprint.
- Discovery + architecture estimate
- 2-week sprints, weekly demos
- QA, security review & launch
A senior pod of engineers and an architect embedded in your team — flexible roadmap, your repo, your rituals.
- 3–6 person senior pod
- Architect + tech lead included
- Integrates with your Jira & Slack
We run, patch, optimise and roadmap your platform — so your internal team can focus on new product work.
- 1-hour critical response SLA
- Monthly perf & cost review
- Quarterly roadmap planning
Continue exploring.
Questions, answered.
What technologies do you specialise in?
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TypeScript, Node.js, React, Next.js, Laravel, .NET, Go and Python — with PostgreSQL, MongoDB and Redis on the data side. We pick the stack that matches the workload, not the resume.
How do you ensure code quality?
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Mandatory PR reviews, automated unit + integration tests, type-safety end-to-end, SAST + dependency CVE scans, and CI/CD pipelines that gate every merge.
What’s a typical project timeline?
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Discovery + estimate: 1–2 weeks. Build: 8–24 weeks depending on scope. We run 2-week sprints with weekly demos and signed-off acceptance.
Can you join an existing engineering team?
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Yes. Our dedicated-squad model integrates senior engineers, an architect and a tech lead into your existing rituals — Jira, Slack, GitHub and your code-review process.
Do you provide post-launch support?
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Yes. Every project ships with 30 days of post-launch support included. Long-term support is offered as a separate Managed Ops engagement with response-time SLAs.
How do you protect IP and source code?
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All work is delivered under NDA, source lives in your repos from day one, and we sign IP-assignment clauses as part of every SoW.
Professional PWA Development services built to scale.
Raulji Technologies delivers PWA Development for ambitious brands worldwide. Whether you need rapid pwa development prototyping, a full production launch or long-term pwa development partnership, our certified team blends strategy, design and engineering into a single accountable workflow. Every pwa development engagement starts with a discovery sprint, then moves through architecture, build, QA and measurable post-launch growth — so you get more than code, you get outcomes from your pwa development investment.
What our PWA Development package includes
- End-to-end pwa development delivered by senior specialists
- Proven pwa development roadmap with weekly milestone reviews
- SEO-ready architecture baked into every pwa development build
- Performance, security and accessibility audits across the pwa development lifecycle
- Transparent reporting dashboards for your pwa development engagement
- Post-launch support, training and continuous pwa development optimisation
Why PWA Development matters for your business
A modern pwa development programme drives measurable revenue, reduces technical debt and unlocks new channels. Our pwa development approach focuses on three compounding levers: speed-to-market, conversion rate and search visibility.
By treating pwa development as a growth engine — not a one-off project — we help teams unlock 2-4x ROI within the first year. Each PWA Development decision is informed by analytics, A/B testing and customer feedback so the impact compounds quarter after quarter.
Related capabilities
Why choose Raulji Technologies for PWA Development?
15+ Years of PWA Development Expertise
Our team has shipped hundreds of pwa development projects across retail, SaaS, healthcare and B2B — so the playbooks behind successful pwa development are already battle-tested.
Senior-Only PWA Development Talent
Every engineer assigned to your pwa development engagement is hand-picked, vetted and accountable. No juniors hiding behind agency layers.
Outcome-Driven PWA Development
We benchmark conversion, Core Web Vitals, organic visibility and revenue — then tune the pwa development delivery until the numbers move in the right direction.
Get started with PWA Development today
Ready to launch or scale your pwa development initiative? Tell us about your goals and we will share a tailored pwa development proposal — including timeline, team composition and pricing — within one business day. Hundreds of clients already trust Raulji Technologies for production-grade pwa development; you can be next. Request a free PWA Development consultation →
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