Yojji LTD

Yojji is a software development shop founded in 2016 by three engineers in Poland. The team now spans 50+ members across two locations and has shipped 300+ projects since launch. They focus heavily on fintech, healthcare, and edtech—three industries where the technical and regulatory bar is high—but the portfolio spreads into ecommerce, AI, and mobility as well.

The company takes on custom product development, dedicated teams, and staff augmentation. Projects range from greenfield builds (a 7-month healthcare booking platform launched in December 2024) to long-term partnerships. One client, STB Union, has engaged Yojji since February 2020 to evolve from a currency exchange network into a modern fintech marketplace with multi-currency wallets and digital cards. Another, CSI Helsinki, partnered for over two years (August 2021–September 2023) to build legal software.

Services and capabilities

Yojji's service menu breaks into three main verticals:

Fintech. They've built custom accounting software, money transfer apps, payment systems, and investment platforms. Recent work includes Loyal Payment (a utility bill mobile app), a cross-country payroll SaaS, and a platform for managing investments across stocks, crypto, and private equity. On the OSU project (March 2023–ongoing), they built the frontend for an open-banking service with payment widgets and admin dashboards. Vala, a worldwide remittance platform, kept them occupied from January 2017 through February 2020.

Healthcare. Medical device software, telemedicine apps, mental health apps, doctor appointment systems, and billing platforms. SuperMe (September 2024–February 2025) was a web platform syncing smartwatches for children with activity tracking and food diaries. The Healthcare Booking Platform (December 2024–July 2025) connects multiple medical institutions, handles payments, and syncs with clinic CRMs. Earlier, they built Symptomatical, a COVID-19 screening and tracking system for schools.

EdTech. LMS development, tutor apps, e-learning platforms, and learning software. Zuzzle (March 2025–October 2025) is a scalable platform for foreign language and academic study with progress tracking. StudyHall (February 2024–November 2024) combines AI assistance with grammar practice and teacher-led assessments.

Beyond these verticals, they've shipped an NFT marketplace (Fortiter, April–July 2022), an AI-powered virtual fitting room for ecommerce, a fashion analytics platform (Jellibeans, March 2022–October 2024), an urban rental app for scooters and e-bikes (RideNow, January–October 2025), and a social event management app (Infinightly, October 2024–August 2025) that reportedly reduces event setup time by over 40%.

The tech stack leans heavily React, React Native, Node.js, and NestJS. They work with Next.js, Vue.js, Angular, TypeScript, Tailwind CSS, PostgreSQL, Docker, Kubernetes, and cloud platforms (Google Cloud Platform, Azure). For AI work, they integrate machine learning where needed rather than building from scratch.

Notable work

Yojji's case study portfolio names real clients and real timelines. A Matter of Design (AMOD) engaged them June–November 2023 to build a web and mobile platform for interior design and furniture shopping with AI-based room redesign, subscription logic, and e-commerce. CSI Helsinki, a legal software house, partnered August 2021–September 2023 to evolve their platform across React, React Native, Kubernetes, Docker, and Azure DevOps. Vala, handling international remittance, gave Yojji full autonomy over design and development decisions from January 2017 through February 2020. STB Union, described as a "major FinTech player," has engaged them since February 2020 to rebuild as a modern financial marketplace.

Other named clients and projects: ExpertsNow (a European hiring platform, September 2024–May 2025), Runway5 (an aircraft marketplace, August 2024–January 2025), Infinightly (a social event app that reduced setup time by over 40%), RideNow (urban rental app, January–October 2025), and Jellibeans (fashion analytics, March 2022–October 2024). All came with detailed timelines and specific deliverables.

Client testimonials are specific and timestamped. Alon Zion, former co-founder at Vala, noted the team was "collaborative and timely" with "experienced, professional" resources. Noam Nevo, co-founder at OSU, said Yojji has worked so long and at such scale that "we treat them as employees in regard to responsibilities and expectations, and they haven't disappointed us." Lisa Ross, VP of Experience & Tech at Avenue, praised their "impressive" development and design skills and noted users found the platform user-friendly and fast.

How they work

Yojji offers dedicated teams, staff augmentation, fixed-scope custom development, and a referral program. Engagement models adapt to client needs. On Avenue (June–November 2019), they used Scrum with two-week sprints and had a dedicated PM ensuring smooth communication and quick resolution. CSI Helsinki notes Agile methodology with daily contact and regular sprint demos. For Loyal Payment, they handled design, development, architecture, and payment flow simplification over a five-month sprint (April–September 2025). Pricing is not published on their site; they handle that in consultation.

The team includes developers with 4–10 years of experience in specific domains. Profiles on the site show a Flutter/Dart specialist (8 years), a React/React Native developer (6 years), a Node.js/NestJS engineer (10 years), a QA engineer with test design expertise (4 years), and a UI/UX designer (4 years, Figma/Sketch/Adobe). All listed as full-time available.

Team and credentials

Founded in 2016 by three software engineers (names not disclosed). The team grew to 50+ members across two offices (locations inferred from "Poland" listing but not explicitly confirmed as single city or multiple cities in source). The site emphasizes a culture of "knowledge sharing, mutual support, and true collaboration." They've handled 300+ projects over 9+ years. Client reviews on their site carry 5.0 ratings consistently (though the exact platform—Clutch, G2, or in-house—is not stated). No certifications (ISO 27001, SOC 2, GDPR compliance) are mentioned in the source material. No partnership badges for AWS, Google, or Microsoft appear, though they use these platforms for client projects.