How do we communicate with the development team day to day?

Directly. Developers, designers, and product people are accessible via Slack and video calls without account-manager layers in between. English is our working language, and communication rules – channels, response times, meeting cadence – are agreed with you at the start of the engagement.

Do you build custom infrastructure, or use proven tools?

Proven, battle-tested tools configured and extended for your case – not built from scratch. Our proposals name the exact tools we recommend, so you know what you're getting before the project starts.

How do you ensure code quality throughout the project, not just at the end?

Code review and automated testing are standard practice, backed by regular architecture audits.

How is AI actually used in delivery, and who's accountable for the output?

AI is used across the full development lifecycle – from discovery to testing to documentation – to speed up repetitive work and increase test coverage. Final decisions, code review, and accountability always stay with our engineers, and client data is never shared with public AI tools.

Next.js Development Company

Next.js software house in Poland with 20+ years of product engineering and 430+ client relationships. We handle Next.js development, migration, and long-term support – choose engineers already shipping Next.js in production, not a team learning the framework on your project.

Who has benefited from Boldare's expertise?

See the companies that trusted Boldare to get it done.

Why Next.js

Next.js provides measurable benefits for your product's performance. Server-side rendering, static generation, and built-in optimization directly affect search visibility, load speed, and how reliably your application scales – not just development convenience.

Superior search engine visibility
Server-side rendering and static generation deliver fully-formed HTML on first request, improving crawlability and indexing compared to client-side-only React applications.
Better user experience
Pages become interactive faster because less JavaScript has to load and execute before a user can act on the page.
Enterprise-grade performance
Automatic code-splitting and image optimization keep performance consistent as an application grows, without manual tuning per page.
Enhanced accessibility
Server-rendered markup is available to assistive technologies immediately, without waiting on client-side rendering to complete.
Deployment versatility
Applications can be deployed to the edge, to serverless infrastructure, or to a standard Node.js server – the same codebase adapts to different hosting constraints.
Zero-configuration setup
Routing, bundling, and rendering are handled by the framework by default, reducing the custom build infrastructure a team has to maintain.

Hire a Next.js Team That Does It Right

The technology rarely fails. The team around it does. Here's what changes when Next.js development is handled end to end, not patched together.

Without a dedicated Next.js partner

Slow frontend performance quietly drags down search visibility and conversions
SSR bolted onto an existing app turns into months of hydration bugs
Content teams wait on developers for every page update
Rendering strategy applied blanket-style instead of per page
Nobody notices performance regressions until they hit production

With Boldare as your Next.js partner

Rendering strategy is chosen per page – SSR, SSG, or ISR, based on what it needs
Next.js is added to your existing app incrementally, without a full rewrite
Headless CMS integration lets content ship without a developer in the loop
Performance budgets are monitored from sprint one, not discovered after launch
One team owns frontend architecture and production stability together

Next.js development team, on demand

Tell us where your Next.js project stands. We'll ask the right questions, share what we've seen work, and give you a clear sense of what's worth exploring – before you commit to anything.

Customer DevelopmentAleksandra Krzyżakbusiness@boldare.com

Next.js Development Services

Everything You Need to Ship a Next.js Application That Performs in Production

Next.js Development

Full-stack Next.js development combining server-side rendering, static generation, and incremental static regeneration – architected per page, not applied as a single default across the whole application.

• Rendering strategy architecture SSR, SSG, and ISR selected per route based on content freshness, traffic patterns, and performance requirements
• TypeScript-first development Type-safe Next.js applications reducing integration errors across frontend and API layers
• Headless CMS integration Contentful, Sanity, Storyblok, or your existing CMS connected via the Next.js App Router or Pages Router
• API and backend integration REST, GraphQL, and server actions connected to your existing backend without duplicating business logic client-side
• Design system implementation Component architecture built for reuse across pages and future Next.js projects
• Since 2004 Product engineering experience applied to how every Next.js architecture decision gets made

Next.js Migration

Migrating a legacy frontend, a client-side-only React SPA, or an older Next.js Pages Router application to modern Next.js – without a full rewrite and without losing existing SEO equity.

• Incremental route-by-route migration Next.js introduced into an existing application without a big-bang cutover
• Pages Router to App Router migration Modernizing legacy Next.js applications to current architecture and rendering patterns
• SEO continuity planning Redirects, metadata, and URL structure preserved through migration to protect existing search rankings
• Rendering audit before migration An honest assessment of which routes actually benefit from SSR, SSG, or ISR before any code changes
• Performance benchmarking Core Web Vitals measured before and after migration to quantify the impact
• Technical debt assessment A clear view of what's worth migrating versus rebuilding from scratch

AI-Assisted Next.js Development

Agentic coding tools embedded into the Next.js development lifecycle — accelerating delivery without removing human accountability for what ships to production.

• Agentic coding support Tools including Claude Code assist with component generation, refactoring, and code review throughout the build
• AI-powered test generation Automated unit and end-to-end test creation across both server-rendered and client-rendered code paths
• AI-assisted code review Every pull request reviewed with AI-supported checks before human sign-off
• Legacy code modernization AI-assisted analysis of existing codebases ahead of a Next.js migration
• Faster iteration cycles AI tooling applied across research, planning, and implementation phases of each sprint
• Human-in-the-loop governance AI accelerates delivery; engineers remain accountable for architecture and production decisions

Next.js Testing and Quality Assurance

Automated testing and performance monitoring built into the Next.js development process from sprint one – not added after a production incident.

• Automated testing coverage Unit and end-to-end tests covering both server-rendered and client-rendered paths
• Core Web Vitals monitoring Lighthouse and real-user performance metrics tracked against defined targets
• Cross-browser and device testing Verified on real devices, not simulators only
• Regression testing Automated checks catching performance and functional regressions before every release
• Security testing Next.js applications assessed against OWASP practices, including API route and server action security
• Accessibility testing WCAG compliance verified across server-rendered and client-rendered components

Next.js Deployment and Infrastructure

CI/CD pipelines and hosting infrastructure configured around your release cadence – whether on Vercel, AWS, or your own infrastructure.

• CI/CD pipeline configuration Automated build, test, and deployment pipelines matched to your team's release cadence
• Edge and serverless deployment Next.js applications deployed to edge runtimes or serverless infrastructure where latency matters
• Environment configuration Staging and production environments kept in sync to eliminate deployment surprises
• Release management Versioning and rollout strategy planned before the first release
• Rollback readiness A tested rollback path in place before every production deployment
• Infrastructure-agnostic delivery Next.js deployed on Vercel, AWS, GCP, or Azure based on your existing infrastructure commitments

Next.js Long-Term Support

Next.js applications require ongoing attention as the framework, dependencies, and your backend evolve – support that continues after launch, not a handoff and disappearance.

• Framework version upgrades Next.js and dependency upgrades managed without breaking production
• Performance audits Core Web Vitals and infrastructure costs reviewed on a regular cadence, with a written report
• Incident response Production issues monitored and resolved before they reach end users
• Dependency and security management Third-party packages kept current to avoid security and compatibility risk
• Ongoing feature development A dedicated team or augmentation of your existing one for continued Next.js development
• Documentation handoff Architectural decisions and rendering strategy documented so your team isn't dependent on tribal knowledge

The Boldare Development Process

From discovery to production – five steps, full transparency, AI-native delivery.

1
Discovery & Technical Deep Dive
Structured needs-analysis call mapping scope, constraints, and success criteria – before any proposal.
2
Stack Research & Architecture Design
Proven, battle-tested tools matched to your requirements, not built from scratch.
3
Transparent Estimation & Delivery Options
Detailed CAPEX/OPEX estimates. Choose validate-first (prototype → pilot) or a direct build for faster delivery.
4
Trust-First Execution
Every sprint transparent: what was built, hours spent, budget remaining. Direct team access, no account-manager layers. Your code and IP, always.
5
AI-Native Delivery with Human Accountability
AI embedded across the SDLC to speed up delivery. Final decisions and accountability stay with experienced engineers.

Boldare in numbers: 4.8/5 Average Rating on Clutch is only a starting point

From independently verified client reviews to multi-year enterprise partnerships – these numbers reflect delivery track record.

Client partnerships built and maintained across industries

Digital products delivered, from MVP to enterprise scale

Independently verified client reviews on Clutch.co

Enterprise brands trust us – from Decathlon to McKinsey & Company

More than 22 years of engineering craftsmanship, now AI-enhanced

Trusted by product teams across industries

Here's what clients say about working with us.

Norbert Baumann

VP R&D – Sonnen

"They treat the customer portal as their product and this resulted in the high quality of their work."

Head of Software Development

Prisma

"They had a very short ramp-up time and were dedicated to delivering."

Zvonko Grujic

Director Digital Engineering – Maxeon Solar Technologies

"I feel that my opinions and observations matter and that the team will adjust their actions based on our feedback."

Jerome Defillon

Chief Technology Officer – Novolyze

"We were impressed with their capacity to embrace an unknown domain and challenge the strong assumptions presented."

Fabio Zecchini

Chief Technology Officer – Musement TUI Group

Boldare delivers results that meet our standards and expectations."

Christian Jennewein

Head of Engineering – BlaBlaCar

"Their customer-focused, Agile approach inspired us, and we discovered that we shared a similar mindset."

Allan Wilson

President - Team Alert

"I was really impressed with how much they cared about our product."

One partner from idea to launch

430+ client relationships. One full-stack team

You own it from day one

Documented, structured, and handed off so your team can maintain and extend it without us. We build for independence, not dependency.

Design and code in one team

We eliminate the handoff gap. Designers and developers work in parallel, not in sequence. What you see in the design file is what ships in production.

AI-native by default

Built to work with your AI tools. We structure and document what we build so tools like Cursor, Claude Code, and Figma Make generate output that stays within your standards – not outside them.

Built for your stack

We work with the tools and frameworks your team already uses – or we adapt to them. What we build fits your team, not the other way around.

Fixed price. No surprises

Every engagement starts with a clear scope and a fixed price. You know what you're getting before anything begins.

One source of truth. For everyone

Designers, developers, and AI tools all work from the same source. No parallel versions. No guessing which one is current.

Governance included

Nothing we deliver drifts without ownership. Every build includes a clear model for who decides on changes, how they're requested, and how things evolve as your product grows.

430+ client relationships

Every product we've built required decisions about what to standardise and what to keep flexible. That experience shapes everything we deliver.

Next.js Development: questions CTOs actually ask

Straight answers on rendering strategy, pricing, code ownership, and what changes when you switch to Next.js

You do. Everything built during the engagement – code and IP – becomes yours, and we keep documentation transparent in your own environment from day one, not handed over at the end.

Join our Team

Get in touch

Digital product creators & consultants

Services

Gliwice

Zwycięstwa 52 44-100 Gliwice Poland

Warsaw

Krucza 50 00-025 Warsaw Poland

Wroclaw

Wyspa Słodowa 7 50-266 Wroclaw Poland

Cracow

Kurniki 9 31-156 Cracow Poland

Boldare S.A. z siedzibą w Gliwicach, przy ul. Zwycięstwa 52, zarejestrowana w Sądzie Rejonowym w Gliwicach, X Wydział Gospodarczy Krajowego Rejestru Sądowego pod nr KRS 0000914518, NIP 6312698829, REGON 38958555. Wysokość kapitału zakładowego i wpłaconego 100 000,00 zł.