Who We Are

HighAppler is a software development company founded in 2025 and headquartered in Shumen, Bulgaria, that builds reliable web, mobile, and SaaS products for companies in the United States.

Our team of 6 senior engineers and QA specialists brings over 50 years of collective experience across Java backend, Angular frontend, native iOS, Android, and quality assurance. We have deep domain expertise in construction software, enterprise integration, and cloud infrastructure.

We operate as an extension of your team — embedding seamlessly into your workflow, communication tools, and development processes.

HighAppler team collaboration

Why Choose Us

A senior engineering team based in Bulgaria, partnering with US companies on custom software, SaaS platforms, and mobile applications. We focus on industries where reliability matters — construction, civic tech, and SaaS — shaping every engagement around what your business actually needs, not a fixed template.

Why Choose Us
Fixed pricing for smaller, well-scoped engagements; time and materials for larger, evolving builds. You get cost certainty where it makes sense and flexibility where the work demands it.
Most focused SaaS MVPs land in 8–16 weeks of active build time, depending on scope, integrations, and the complexity of your domain logic. Larger platforms with custom infrastructure or compliance requirements typically take four to six months.
We focus on construction technology, civic tech, and SaaS startups — building software for project workflows, public-sector platforms, and subscription products that need to scale reliably.
We are based in Shumen, Bulgaria and serve clients across the United States with overlapping US-time-zone working hours, dependable communication, and EU data-residency options when needed.
We choose the stack to fit the project, not the other way around. Our team works across modern web, mobile, and cloud technologies — selecting the right tools based on your performance needs, team handover plans, and long-term maintenance goals.
We sign NDAs as a standard part of any engagement and work with clients to meet industry-specific compliance requirements — handling sensitive data, secure architectures, and audit-ready delivery practices.

What Our Clients Say

Our clients' satisfaction is our greatest motivation, pushing us to consistently deliver top-quality services and products.

Theresa Jutagir
Chief Product Officer, PeerAssist
I worked with many of the HighAppler team when they were part of PeerAssist. They helped to build our SaaS Field Productivity platform. Their expert Java team helped us design and launch a powerful, user-friendly solution that bridges field and office teams — handling document management, procurement, time-and-material tracking, and offline support. I'm thrilled with the outcome and proud to partner with a team that delivers on quality, collaboration, and innovation.
Christina Turner
Owner - Arch Business Resources
Working with this team of professionals has consistently been an outstanding experience. Their deep knowledge and reliability shine through in every phase of a project. Communication is always clear and consistent, which makes collaboration seamless. From system architecture and UX design to scalability, they've delivered high-quality solutions every time. I highly recommend them to anyone looking for a dependable and skilled partner.
Petar Ivanov
Owner - P&D Development LLC
Their team brought deep technical expertise, clear communication, and a strong commitment to delivering quality results. Together, we successfully executed our project goals on time and with impressive outcomes. We truly value this partnership and look forward to future collaborations.

Let's Build Together

Whether you need a full development team or individual specialists, we are ready to help you build your next product.

Contact Us TodaySchedule a Discovery Call

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