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Office 365 Add-ins Development for Word, Excel, Outlook & PowerPoint

Custom ribbons, task panes, content add-ins, API/Graph integration, SSO, deployment, and AppSource publishing — built fast with clean, maintainable code.

  • Office.js & VSTO expertise
  • AppSource readiness
  • Graph API / webhooks
  • Performance & security
W

Word Add‑ins

  • Ribbon & Task Pane
  • Document Automation
  • Content Controls
X

Excel Add‑ins

  • Custom Functions
  • Data Connectors
  • Dashboards
O

Outlook Add‑ins

  • Message/Meeting Commands
  • Smart Pane & Deep Links
  • Webhooks & Graph
P

PowerPoint Add‑ins

  • Slide Automation
  • Templates & Branding
  • Asset Libraries

Services

From idea to AppSource: I design, build, and maintain production‑grade Office add‑ins with robust architecture and beautiful UX.

Solution Design

Scoping, wireframes, and technical specs tailored to your workflows and compliance needs.

Development (Office.js / VSTO)

Task panes, ribbons, custom functions, COM/VSTO migration, performance tuning.

Integrations

Microsoft Graph, REST APIs, OAuth/SSO, webhooks, cloud storage, and line‑of‑business systems.

Security & Compliance

Best practices for permissions, manifest hardening, and tenant deployment strategies.

Deployment

Centralized deployment, AppSource submission, CI/CD pipelines, telemetry and monitoring.

Support & Maintenance

Ongoing updates, bug fixes, and roadmap features with transparent SLAs.

Process

01 — Discover

Requirements, success metrics, and feasibility.

02 — Design

UX flows, wireframes, and technical design.

03 — Develop

Iterative delivery, demos, and testing.

04 — Deploy

Tenant rollout or AppSource publishing + support.

Pricing

Simple options depending on your needs. Hourly or fixed‑scope packages.

Hourly

$25/hr

Best for flexible or ongoing work.

  • • Minimum 10 hours
  • • Weekly reports
  • • Priority support
Get Started

MVP Add‑in

$999+

A focused scope to validate your idea.

  • • Basic ribbon + task pane
  • • API integration
  • • Deployment guide
Request Quote

AppSource Ready

Custom

Full compliance, telemetry, and docs.

  • • Permissions & validation
  • • Performance tuning
  • • Submission support
Book a Call

FAQ

Do you build VSTO and Office.js add‑ins? +

Yes. I build modern Office.js add‑ins and maintain/extend legacy VSTO/COM solutions, including migration paths.

Can you integrate Microsoft Graph and webhooks? +

Absolutely—OAuth, SSO, Graph data, subscriptions/webhooks, and backend services are common parts of my projects.

How do deployments work? +

I support centralized deployment to your tenant and AppSource submissions, with CI/CD, validation, and documentation.

Let’s talk about your add‑in

Send a quick message with your goals, target Office app, and any API dependencies. I’ll respond with next steps and options.