Software Engineer (.NET/C#)

Rollstack; United States; Remote; USD 80,000 - 100,000; Full time

Job summary

A data automation startup is seeking a Software Engineer to build and maintain Office add-ins and develop integrations with Microsoft Office APIs. This role requires 2-6 years of software engineering experience and proficiency in .NET (C#). Join a diverse and fully remote team dedicated to problem-solving and impactful development, while enjoying competitive compensation and equity in a fast-paced environment.

Benefits

Competitive compensation

Meaningful equity

Bi-annual team offsites

Qualifications

• 2-6 years of professional software engineering experience.
• At least 1 year working with .NET (C#), especially building add-ins or integrations.
• Deep understanding of software engineering fundamentals, algorithms, and data structures.

Responsibilities

• Build and maintain PowerPoint, Word, and Excel add-ins.
• Develop robust integrations with Microsoft Office APIs.
• Collaborate with engineers to build great software.

Skills

Professional software engineering experience

.NET (C#) experience

Software engineering fundamentals

Problem-solving skills

Tools

Microsoft Office APIs

VSTO

Office.js

COM

Job description

At Rollstack, we are revolutionizing the way businesses share and communicate data and insights. Organizations worldwide rely on slide decks and documents to make informed decisions, whether for leadership, clients, or partners. Yet, preparing these materials often consumes countless hours. Rollstack fully automates that.

We help some of the world's leading organizations—from mid-sized to public companies like SoFi, Zillow and Whirlpool—in automating their slide decks and documents. Headquartered in New York, we offer a remote-friendly workplace and are backed by Insight Partners and Y Combinator, the most successful startup incubator in the world that produced the likes of Airbnb, Twitch, Instacart, Dropbox, Reddit, Doordash, Stripe, Coinbase, etc.

Our team operates with speed and focus to deliver outsized impacts for our customers. We approach every challenge with first principles, never assuming things have to be done a certain way. We are a diverse team that believes intelligence and kindness go hand in hand, welcoming individuals from all backgrounds. Our persistence and rapid execution define us as a category leader and a future generational company.

As a Software Engineer, you will

• Build and maintain PowerPoint, Word, and Excel add-ins using .NET and C#.
• Develop robust integrations with Microsoft Office APIs (VSTO, Office.js, or COM) to automate document creation and updates.
• Ship high-impact features like auto-generated slides, AI-powered insights, and real-time data sync into Office documents.
• Collaborate with highly technical engineers who care about building great software.

Who Should Apply

We don’t care about fancy titles or endless meetings. We care about engineers who love to build and solve problems.

If you check the boxes below, we want to talk to you:

• 2-6 years of professional software engineering experience.
• At least 1 year working with .NET (C#), especially building add-ins or integrations with Microsoft Office.
• Deep understanding of software engineering fundamentals, algorithms, and data structures.
• Experience working closely with PMs, designers, and customers to build and iterate on products.

Who Should Not Apply

• If you're looking for a stable, slow-moving company where priorities don’t change.
• If you prefer thinking about product strategy rather than building and shipping code.
• If you don’t want to talk to customers or iterate on feedback.

Why Join Us

• Join a Y Combinator-backed company that’s redefining how individuals and teams—across industries and around the world—work smarter and faster.
• Work alongside an exceptional team of builders and operators, including alumni from Amazon, Pinterest, Tesla, Nvidia, and AiFi.
• Be part of a fully remote, globally diverse workplace that values autonomy, impact, and collaboration.
• Contribute to a product that users love and that truly sells itself—built by a world-class product and engineering team.
• Look forward to bi-annual team offsites in destinations that belong on your travel bucket list.
• Earn competitive compensation and meaningful equity in a fast-moving, high-leverage startup where your work directly shapes the company’s trajectory.