Seisan

About Seisan

Seisan is a Lancaster, PA-based custom software development and technology consulting firm with deep roots dating back to 1994, offering enterprise application development, system integration, and technical consulting to mid-market and enterprise organizations in manufacturing, healthcare, and professional services. The firm brings three decades of software delivery experience to every engagement, combining a pragmatic engineering approach with a long-term client partnership philosophy. Reviewers highlight Seisan's technical competence, collaborative working style, and commitment to building solutions that serve clients well beyond the initial engagement.

Who Seisan Is Best For

Manufacturing and industrial companies needing custom ERP or operational software, mid-market enterprises with complex system integration requirements, long-term technology partnerships with experienced consultants. Engagements perform best when stakeholders align on measurable KPIs and maintain a regular optimization cadence across...

Why Choose Seisan

Things to Consider

Seisan Services

Selected Work

Coach iNVR — Immersive VR Coaching Platform

Coach iNVR

Seisan designed an integrated system from 360 footage capture through player feedback, with interactive playback and markup in VR plus companion mobile apps for an immersive coaching experience.

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Virtual Worlds — AR Sales Enablement App

Building manufacturer (anonymized)

Seisan created a cross-platform 3D augmented reality mobile application that places a building manufacturer’s products into realistic virtual environments, empowering sales teams with an interactive sales tool.

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XS Tax Provision — Enterprise Tax Platform

XS Tax Provision

Seisan delivered a custom web-based enterprise tax provision and compliance platform enabling users to import data and manage tax provision workflows across multiple jurisdictions and business entities.

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