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Get a custom proposalWe build software that scales
Jay Software is a software engineering agency based in Arad, Romania, specialising in real-time systems, fintech platforms, and cloud-native infrastructure.
We work with scale-ups and funded startups across the US and Western Europe, embedding directly in engineering teams to design, build, and ship production-grade software. Our engagements range from greenfield product development to platform modernisation and long-term technical support.
Selected work includes a real-time audio moderation platform processing 1B+ minutes at sub-50ms latency, a crypto payment platform integrating fiat and crypto rails, and an internal enterprise platform for a global automotive manufacturer.
We work with a tight network of senior specialists rather than a large bench, which means every engagement gets the right expertise without the overhead.
Core technologies: PHP, Laravel, Node.js, NestJS, Python, FastAPI, Go, Java, React, Next.js, Angular, TypeScript, React Native, Flutter, PostgreSQL, Redis, Kafka, Kubernetes, AWS, Docker, Terraform, WebRTC, and Rust.
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Min project size
$10,000+
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Hourly rate
$25 - $49 / hr
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Employees
2 - 9
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Year founded
Founded 2015
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Meet the Team
Catalin CasuneanuCEO
He is a former VoicePatrol CTO and Entrepreneur in Residence at Startup Wise Guys. Focused on resilient platform architecture, clean project structure, and engineering organisations that can deliver continuously without sacrificing quality.
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