Senior VSTO & Open XML Engineer – MS Word IRC288346

Description

Note: GlobalLogic estimates the starting pay range for this role to be performed remotely in USA is $115,000 – $125,000 and reflects base salary only. This pay range is provided as a good faith estimate and the amount offered may be higher or lower. GlobalLogic takes many factors into consideration in making an offer, including candidate qualifications, work experience, operational needs, travel and onsite requirements, internal peer equity, prevailing wage, responsibilities, and other market and business considerations.

Requirements

Role Summary

We are seeking a highly skilled Microsoft Word Add-in Engineer to design, develop, and maintain enterprise-grade Word automation solutions. The role requires deep expertise in VSTO, the Word Object Model, and Open XML, with a strong focus on performance, document fidelity, and secure integration of web experiences within Word. The engineer will work on large, complex documents and implement section-level controls without compromising formatting, security, or usability.

Job responsibilities

Key Responsibilities

· VSTO Add‑in Engineering (C# / .NET Core)
Design, build, and maintain robust Microsoft Word VSTO add‑ins with stable COM interop patterns, defensive error handling, and deterministic resource cleanup.

· Custom Ribbon & UX
Create custom Ribbon tabs/groups and callbacks within MS Word

· Web Application Integration in Word
Integrate web experiences inside Word using supported hosts. Securely handle auth, deep‑linking, and message passing between the add‑in and the embedded web app.

· Section‑Level Permissions (Word)
Programmatically define and manage section‑level editing restrictions and protection policies (e.g., allow/deny edits by user/group, enforce read‑only regions) while preserving document integrity and compatibility with enterprise security settings.

· Document Section Operations (Extract/Replace)
Implement reliable routines to extract a section (including headers/footers, fields, content controls) and replace sections without altering surrounding formatting, styles, numbering, or tracked changes; handle edge cases like linked headers, multi‑column layouts, and section breaks.

· Word/Excel Object Model Mastery + Open XML
Should be proficient in using Open XML SDK for bulk transformations, round‑trip fidelity, and performance‑critical editing.

· Performance at Scale (50+ pages)
Optimize for large documents: minimize COM round‑trips, avoid Selection, batch updates, disable UI updates where safe, and offload heavy transforms to Open XML to prevent UI freezes and crashes.

· Format Conversion (DOCX ⇄ XML/PDF)
Implement high‑fidelity conversions:

o XML: Leverage Open XML SDK for structured document reads/writes.

o PDF: Use Word’s SaveAs automation for best fidelity in client scenarios; design alternative pipelines where Word is not available.

What we offer

Culture of caring. At GlobalLogic, we prioritize a culture of caring. Across every region and department, at every level, we consistently put people first. From day one, you’ll experience an inclusive culture of acceptance and belonging, where you’ll have the chance to build meaningful connections with collaborative teammates, supportive managers, and compassionate leaders. 

Learning and development. We are committed to your continuous learning and development. You’ll learn and grow daily in an environment with many opportunities to try new things, sharpen your skills, and advance your career at GlobalLogic. With our Career Navigator tool as just one example, GlobalLogic offers a rich array of programs, training curricula, and hands-on opportunities to grow personally and professionally.

Interesting & meaningful work. GlobalLogic is known for engineering impact for and with clients around the world. As part of our team, you’ll have the chance to work on projects that matter. Each is a unique opportunity to engage your curiosity and creative problem-solving skills as you help clients reimagine what’s possible and bring new solutions to market. In the process, you’ll have the privilege of working on some of the most cutting-edge and impactful solutions shaping the world today.

Balance and flexibility. We believe in the importance of balance and flexibility. With many functional career areas, roles, and work arrangements, you can explore ways of achieving the perfect balance between your work and life. Your life extends beyond the office, and we always do our best to help you integrate and balance the best of work and life, having fun along the way!

High-trust organization. We are a high-trust organization where integrity is key. By joining GlobalLogic, you’re placing your trust in a safe, reliable, and ethical global company. Integrity and trust are a cornerstone of our value proposition to our employees and clients. You will find truthfulness, candor, and integrity in everything we do.

About GlobalLogic

GlobalLogic, a Hitachi Group Company, is a trusted digital engineering partner to the world’s largest and most forward-thinking companies. Since 2000, we’ve been at the forefront of the digital revolution – helping create some of the most innovative and widely used digital products and experiences. Today we continue to collaborate with clients in transforming businesses and redefining industries through intelligent products, platforms, and services.