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Web Application Development Company for All Your Needs.
With 30+ years in web development across industries, NIX has accumulated vast experience in building accessible, high-load-resistant, and secure web applications. Powered by AI, ML, BI, and other progressive technologies, our solutions help you accomplish your goals—whether it’s simplifying business processes, synchronizing data, or personalizing customer experiences.
Our web application development services encompass the entire tech solution life cycle—from deep business audit and roadmap creation to seamless release and ongoing support. We incorporate a low-code approach, test automation, AI tools, and CI/CD practices in our software development life cycle (SDLC) process to ensure resource savings and faster delivery.
Years of Web Development Experience
Web Projects delivered
Web Experts
Satisfied Clients
Customer Satisfaction Rate
78%
Industry Customer Satisfaction Rate
Within web app development services, we create fully tailored solutions based on customized implementation strategies that fit your budget and timeline. The goal is to deliver a user-oriented and functional web app that meets all your requirements and complies with industry standards. To this end, we work closely with you and use proven methodologies, ensuring transparent communication throughout the project. Our deep expertise and experience across technologies make us flexible and adaptable to evolving needs, able to deliver long-term business value.
NIX leverages cloud-based technology to build scalable SaaS solutions for B2B, B2C, B2G, and B2E markets. Going beyond basic web applications, we focus on constructing agile, multi-tenant web platforms, engineered to optimize operational efficiency within your organization. With our expert assistance, you can transform your innovative concept into a dynamic, subscription-based growth engine, establishing a solid foundation for recurring revenue streams.
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Our experienced web application development company creates flexible progressive web apps (PWAs) that help you engage your target audience with lightning-fast, installable experiences that function flawlessly across all devices, from smartphones to desktops. Fusing the accessibility and reach of the web with the immersive performance of native mobile applications, these solutions reduce friction and offer a budget-friendly alternative to a costly native approach.
NIX experts build cloud-native web apps that scale with demand and reduce your operational burden. Leveraging modern DevOps practices and microservice architecture, we ensure continuous delivery, performance, and availability. As a custom web application development partner certified by Google, AWS, IBM, and Microsoft, we offer clients exclusive cloud benefits while still supporting alternative cloud platforms if preferred. Our solutions remain cost-effective, adaptable, and high-performing in any environment.
Our web app development services include CMS-based solutions that support your content strategy and business goals. This way, we can launch web apps faster and more economically, cutting your costs by up to 40% and enabling 50% quicker content publishing. Whether you need a marketing site, client portal, or internal knowledge base, our CMS-based applications reduce administrative effort and allow your team to manage digital assets more efficiently, without technical overhead.
We offer minimum viable product (MVP) development to accelerate time to market and minimize potential risks. With this approach, you can validate your concepts early and gather valuable user insights through the creation of focused, functional prototypes. Built under our web app development services, MVPs now benefit from AI-supported SDLC practices that reduce development time. This helps optimize investment, eliminate unnecessary features, and allow faster scaling—laying the groundwork for strategic product growth.
Our team has proven experience developing powerful and robust web portals for different domains, from healthcare to education. We create flexible web systems that provide multiple users with all the needed capabilities for smooth and efficient operation around the clock. Focused on high-load resistance, security, and user-centricity, our solutions are convenient to use and promptly scale with business growth.
This option is ideal for businesses looking for a clearly defined scope and timeline. We manage the full custom web application development life cycle — from initial requirements analysis and solution design through to deployment, QA, and post-launch support. Using secure AI tools during implementation, we achieve up to 34% faster time to market while maintaining full transparency and control. The project-based approach ensures delivery within your budget and deadline, with minimal client-side management effort.
When internal capacity or specific expertise is limited, NIX helps you scale by forming a dedicated team tailored to your project needs. Led by a qualified project manager, this team seamlessly joins your in-house staff, fully integrating into your workflows and objectives. Backed by 3000 specialists across skill sets, we can quickly assemble the right professionals, including experienced web app developers, UI/UX designers, QA engineers, and other experts. Rather than simply following instructions, they become active, long-term contributors to your success.
For companies that require strategic oversight but not a full-time executive, we provide senior-level tech leadership focused on your web app initiatives within your business niche. From architecture reviews to roadmap planning and implementation oversight, we help align your technology with business goals. This model is particularly useful for startups and growing businesses looking to scale smartly, build maintainable systems, and avoid critical technical missteps.
NIX provides level 2 and level 3 IT support for existing web applications, ensuring consistent system performance and rapid issue resolution. In addition to routine support, we offer targeted maintenance services such as cloud infrastructure optimization, cybersecurity improvements, system upgrades, and performance tuning—keeping your application secure, up-to-date, and fully operational. This model suits teams who want to save internal resources or need short-term, flexible assistance with web development projects.
Deliver responsive, accessible, and visually consistent user experiences across devices and ensure fast performance and seamless interaction with our expert front-end approach.
Make your web application run smoothly with secure, scalable, and high-performing server-side logic based on proven back-end technologies and robust, powerful architectural design.
Leverage our expertise to deploy your web application on your preferred cloud platform. As partners of AWS, Azure, IBM, and GCP, we offer additional benefits while building optimized cloud systems tailored to your scale, budget, and workload.
Generate additional value and make smarter business decisions by integrating features that adapt to behavior, automate actions, and generate predictions—all powered by our intelligent, self-learning models.
Turn raw data into business insight by using smart dashboards, real-time reports, and analytical tools to monitor trends, understand customer behavior, and guide strategies.
Empower your infrastructure with innovative IoT solutions, which result in more advanced web app features such as remote device management, real-time tracking, secure remote access to crucial data, and more.
Every solution is tailored to your unique industry, business goals, and users. With our web application development services, you get software that solves your real-world challenges.
Security is a core part of our custom website development services and delivery process. We integrate DevSecOps, CloudSecOps, and pen-testing practices to build systems that are resistant to evolving cyber threats.
We accelerate delivery by combining low-code development, automated QA, advanced AI tools, and more across the SDLC, resulting in faster, reliable product launches.
We treat each project with ownership-level dedication, delivering stable, high-quality results that uphold our reputation as a trusted partner in web development services.
Our team builds a clear project structure with status reports, visible roadmaps, and a dedicated PM who ensures alignment between your business and our web app development company.
Our web app solutions are designed to scale and adapt. By leveraging modern tech stacks and best practices, we ensure your software grows with you and remains relevant to market needs.
Security is built into every stage of our delivery process. Our teams follow secure coding standards, implement DevSecOps practices, and perform regular vulnerability assessments and penetration testing. We also align with industry-recognized frameworks—including SOC 2 and OWASP—to ensure our systems meet enterprise-grade compliance and data protection requirements.
As part of our web application development services, we embed security controls at the architectural level and continuously monitor risks throughout the SDLC. This includes role-based access, data encryption, secure API gateways, and cloud security hardening. With these measures, we ensure your application is protected against evolving threats—without compromising performance or scalability.
NIX has many years of successful experience creating web apps that meet specific industry standards, such as HIPAA, PCI DSS, GDPR, or other regulatory requirements.
When providing our web app development services, we always strive to fully adjust our flow to the format of collaboration that’s comfortable for you. In doing so, our team focuses on process transparency, efficiency, and meeting your goals.
1
We start with the discovery phase, where our business analysts and solution architects examine your goals, pain points, and existing systems. The NIX team defines technical and business opportunities, proposes viable product strategies, and ensures every decision directly aligns with your priorities and meets real needs. This way, we lay the groundwork for seamless project delivery and compliance with all deadlines.
Deliverables: Requirements summary, business case, solution proposal, scope outline.
2
The solution architect turns the agreed-upon vision into a system structure while UI/UX designers create wireframes and interface logic based on user behavior. We shape a scalable architecture, plan for product growth, and choose technologies for further custom web application development. We also define project boundaries and map out risks to ensure stable delivery and successful future scaling.
Deliverables: Wireframes, system architecture, tech-stack plan, delivery roadmap
3
After UI/UX concept approval, cross-functional teams start development in sprints. Front-end and back-end engineers turn designs into functional features, while our PM manages tasks, budgets, and priorities to ensure everything stays on track and aligned with your evolving business objectives. Throughout the cycle, we focus on stability, performance, and long-term maintainability.
Deliverables: UI kit, Source code, Sprint reports, Functional modules
4
Our QA engineers are involved from day one, working side by side with web app developers. Applying a Shift Left approach and combining automated and manual testing, they check whether the web platform works as intended and meets all requirements in various use cases. Their early involvement accelerates delivery, reduces risks, and guarantees the polished final product launches on schedule.
Deliverables: Test plan, test cases, bug reports, regression suite, security audit
5
Experts at our web app development company analyze your infrastructure and prepare for a smooth transition to the cloud platform that best aligns with your operations. We develop a cloud architecture tailored to your scale, budget, and workload, ensuring availability, cost optimization, and stable performance. Our goal is to build scalable, resilient, and highly secure environments that help you grow your business as needed.
Deliverables: Cloud migration plan, architecture blueprint, deployment scripts, uptime strategy
6
Our web app development company integrates your solution with internal services and third-party platforms like CRMs, CMSs, ERPs, and payment providers to create a smoothly functioning and fully synchronized ecosystem. The key to this step is ensuring seamless data exchange, API compatibility, and workflow stability to support end-to-end operations with zero disruption for your business or security risk.
Deliverables: Integration map, API specs
7
When user feedback or analytics expose friction points, we rework interface elements to improve clarity, flow, and accessibility, which are crucial for complex multifunctional web systems. These enhancements free up valuable time, reduce the onboarding period, improve task flow, and deliver more value to users—whether employees, customers, or partners interacting with your system.
Deliverables: UX audit, revised UI elements, accessibility improvements, usability report
8
Within our web app development services and as part of the implementation process, we evaluate system behavior under load and identify root causes of slow response times, instability, and resource waste. Our specialists finely tune every layer, including the back end, front end, and infrastructure, to ensure your web solution performs reliably even under peak usage conditions and supports the most demanding users.
Deliverables: Performance audit, load test results, tuning logs, bottleneck analysis
9
After a successful web solution release, we can leave part of our engineering team for post-delivery support—which includes troubleshooting, tech audits, and other activities—to keep everything running at high capacity. If necessary, we further scale the project to ensure you lead the market and perform your business cost-effectively with minimal overhead.
Deliverables: Release checklist, support plan, enhancement backlog, monitoring setup
We really care about project success. At the end of the day, happy clients watching how their application is making the end user’s experience and life better are the things that matter.
Cloud Solution with Multi-layer Microservice Architecture
Internet Services and Computer Software
Manufacturing
Blockchain-based Platform for Monitoring Drug Quality
Pharmaceutical
Device Management Solution for Fortune 500 Company
vSentry—AI Web App for Vehicle Monitoring
Cybersecurity
Electronics
Voice Recognition Platform for Feedback Exchange
Oil & Gas
Mining
AWS-based BI Platform for Marketing Insights
Marketing & Advertising
“CMS team are my go-to partners for web dev”
I’ve been working with these guys for years now – particularly their CMS team. The relationship has been very positive, and they continue to do great work for me.
I first hired NIX around 2008 to re-build a website that was built (poorly) by another agency. NIX solved that problem and has helped me build and launch multiple products since then. Roman and his CMS team are my go-to partners for web dev.
Consultant & Advisor at DemandSide
VP of Engineering at Elsevier
“Extremely detailed, professional, attentive”
We’ve been working with NIX for over a year now and have nothing but good things to say about them and their talented pool of developers, staff members, and executives. They are extremely detailed, professional, attentive, and deliver top-quality work within the time estimates that they provide. What else can you ask for? I highly recommend NIX for all tech-related projects.
Account Manager at TransGrade, CRM
“Quality of delivered work is outstanding”
Our company worked more than 5 years in total with NIX. Communication was always very clear and direct. Being a remote company, wasting time in communication is horrible, luckily with NIX, we experienced no delay or misunderstanding.
Quality of delivered work is outstanding, all tasks prior to delivery were tested in detail, and bugs or mistakes were virtually non-existent.
Project Manager at Information Products AG
Senior Director of Engineering at Premier
“It is hard to impress me, and NIX kept me happy”
There is no recommendation that is more powerful. NIX’s expert team built a new system that increased potential customer traffic and improved performance. Their transparent workflow allowed for consistent communication and quick correction of problems when they arose. They also adjusted their processes to mitigate time-difference concerns.
Director of Operations at CarSoup
Senior VP of Technology
“You have done the work perfectly”
I want to say thank you for the excellent, highly professional work, for your passion, and your time even on holidays and weekends. Your attitude ultimately led to outstanding results. We are satisfied with the result we’ve achieved, but we need to keep working, and actively use every opportunity to make it better. You have done the work perfectly and the application, which you created in such a short time, turned out to be very functional and cool.
VP R&D at HumanEyes
“The team is experienced and professional”
We cooperate really well with them, and they make adjustments so we don’t have any complaints. The original project was successful, so they’ve extended the partnership. Headed by a knowledgeable project lead, the team is experienced and professional. NIX delivered everything on time and was always in contact with their partner. Offering a superior customer experience, they’re recommended.
COO at SafeRide Technologies Ltd
“NIX is doing an amazing job”
NIX team contributed a lot to the process improvements for code deployment practices. So not only we write clean/stable code now but also, we are able to deploy it a lot more successfully and faster. We have a better strategy for our branch cutting and code repositories. It takes much less time to deploy code now with a higher level of stability. NIX team also contributed their ideas and views on how we can break up work among team members more effectively.
Sr. Director of Engineering for MindTap
“World-class development”
NIX are great communicators for native English speakers, they work well with our timezone, they are highly organized, and most importantly they build beautiful software. Our team cast a wide net and was highly selective when we decided to search for a software development partner, and NIX has exceeded our expectations since we chose to work with them. If you are looking for a team that performs world-class development well below the average U.S. cost, NIX is a perfect partner.
Co-Founder at Buildforce
“Delivered high-quality products”
NIX delivered high-quality products that work flawlessly and have boosted revenue partner schools, who have successfully used the digital platform to fundraise. The team’s organized workflow and programming skills help them seamlessly fit into the client’s company as a whole.
President at Ortner Enterprises DBA North Two Five
“Quickly and professionally”
I have used NIX for 3 different companies over the past 3 years that I have been CTO of. Projects have spanned a wide variety of technology stacks. NIX has come through each time with the right project manager, quality assurance, business analyst, DevOps, and developers. They quickly and professionally get up to speed with our current processes and seamlessly merge with any professional environment.
Chief Technology Officer at Sparkle Stories LLC
“Delivering high-quality code”
With NIX, I have broken some of my own rules of team composition with respect to the ratio of FTE and 3rd party engineers. I have some teams that are more than 50% NIX because the code coverage, quality, and velocity coming out from the NIX developers are very good. Delivering high quality code in a predictable manner has built trust and confidence with my management/full-time employees.
SVP of Engineering at Cengage
“Fast and responsive”
The team was fast, responsive, and took the time to walk through every step.
The engineers are helpful and responsive.
CEO/Founder at SoleVenture, Inc.
“Attentive and listening”
I enjoyed working with the NIX team because they are so attentive, listening, and questioning decisions about the development specifications. The questions absolutely make me think and make the product better.
President of Conspectus, Inc
“Staff are highly professional and personable”
Team NIX brings strong technical and product development management experience. Expertise and resources are brought on and off seamlessly as required. Staff are highly professional, personable, and an asset when interfacing with our partners and customers.
Co-Founder & CEO at ARTiFACTS
“NIX’s work has been excellent.”
NIX’s work has been excellent. They’re technically knowledgeable and have expertise in many areas. Moreover, they’re diligent, meet deadlines, and communicate effectively. They’re also flexible, bring in the right personnel when needed, and are enjoyable to work with.
Co-Founder
“I also found them to be extremely good at documenting the steps and laying out the costs for each part of the project.”
NIX delivered a functional application that was tested by 15 industry individuals. NIX was extremely good at documenting the development steps and laying out the costs of each project stage. NIX’s project manager was professional, set up weekly meetings, and delivered work on time.
Owner, N2 Plus
“NIX consistently met milestones according to the project timeline.”
NIX’s work has resulted in a 50% decrease in infrastructure costs, a 50% increase in deployment speed, a 25% decrease in technical debt, and a 15% increase in CSAT scores. The team is timely, communicative, adaptive, and responsive, and their commitment and collaboration skills are outstanding.
Co-Founder & CTO
“They’re reliable and have great communication skills”
NIX has delivered exactly what was needed in a timely manner, leaving the client completely pleased with the collaboration. The team boasts excellent communication skills and has proven to be a reliable partner. The partners communicate via email, messaging apps, and virtual meetings.
CTO, Real Estate Firm
“They were fully dedicated in time and heart to the project.”
The app had no bugs and required minimal support calls from end customers. The client was also happy with the number of users on the app. NIX led professional project management, offered status updates, and communicated effectively. Their dedication made them feel like part of the client’s team.
Founder & HOP, Fitness Space Rental Platform
“Terrific project manager – good communication and understanding of our app and objectives.”
NIX’s work has been met with positive acclaim. The team is efficient, hardworking, and on top of the ball. Customers can expect a team that gets the job done.
CTO, Color My Life, Inc
“They often provide helpful advice on areas that are starting to impact us as we grow.”
Thanks to the contributions of the NIX team, the client has been able to deliver large financial software projects on time and within budget. The client appreciates the team’s dedicated and professional staff and their advice on areas starting to impact their growth.
Department Head, Fignum Limited
Dmytro, a seasoned web development leader at NIX, leverages his technical and strategic expertise to deliver tailored web solutions and guidance.
Dmytro Troian
Head of the Web Department
Yuliia delivers IT consulting for pharma and health-tech, focused on integrating technology and medicine to improve patient outcomes.
Yuliia Semerenko
Software Solutions Consultant
01/
Web app development services include designing, building, testing, and maintaining web-based software tailored to business goals. They cover everything from MVPs to enterprise systems and are ideal for creating scalable digital solutions.
02/
Web application development services vary in cost depending on complexity, features, and timelines. A basic solution may start with a relatively small budget, while enterprise-grade systems usually require larger investments. Pricing is also affected by the model of engagement, whether it’s end-to-end development, fractional CTO, IT support, or something else.
As a full-cycle, custom web development company, NIX offers flexible pricing models and accurate estimates based on your business goals and technical complexity.
03/
Timelines depend on your project scope. A simple MVP may take 6–8 weeks, while a full-featured web-based solution needs several months or more. A web app development firm typically offers phased delivery for faster time to market.
At NIX, an experienced web app development agency, we always go the extra mile to meet your deadlines.
04/
Yes. As a global web application development company, we align our workflows with your time zone for smooth communication and efficient delivery. Our flexible engagement models support global clients across industries and time differences. Our experience is confirmed by 3500+ projects with different clients all over the world.
05/
Yes, our web application development services include long-term maintenance, performance tuning, security updates, and support. Whether it’s practice management systems or complex platforms, our web app developers ensure reliability and continuity after launch.
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