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Senior Software Engineer

Job in St. John's, St. Johns, Newfoundland / NL, Canada
Listing for: Spellbook
Full Time position
Listed on 2026-02-15
Job specializations:
  • Software Development
    Full Stack Developer, Software Engineer
Job Description & How to Apply Below
Location: St. John's

Spellbook is the most comprehensive AI copilot for transactional lawyers. It works directly inside Microsoft Word to help legal teams draft, review, and negotiate contracts up to 10x faster and with greater precision. Today, more than 4,000 law firms, in-house teams, and solo practitioners rely on Spellbook to simplify their workflows and eliminate the drudgery of everyday contract work.

We are backed by leading investors including Khosla Ventures, Thomson Reuters Ventures, Inovia Capital, The Legal Tech Fund, Bling Capital, and Moxxie Ventures. The company recently raised $50 million in Series B funding, led by Keith Rabois at Khosla Ventures, bringing its total funding to more than $80 million.

THE TECH STACK
OpenAI and other large language models (LLMs), React

JS, Node, Typescript, Mongo, Docker, AWS, CDK

RESPONSIBILITIES

Working as a part of a distributed team in a fast paced environment, identifying opportunities to make impactful enhancements to lawyer workflows

Designing, architecting, and implementing new features in the Spellbook application.

Using the latest large language models (LLMs) from OpenAI, Anthropic, and other LLM providers to add and improve application functionality such as providing our customers with review suggestions they can use to improve their documents.

Collaborate with our product management team on changes to our React application to improve customer experience.

Add and improve application functionality by improving our Express and tRPC based API.

Improving the performance and reliability of existing functionality and addressing user feedback through bug fixes.

Building and maintaining application infrastructure in Amazon Web Services (AWS) with AWS Cloud Development Kit (CDK).

Conducting code reviews and providing constructive feedback to team members.

Other responsibilities as required.

QUALIFICATIONS

You have 5+ years of experience in Software Development.

You have exceptional communication skills. You can explain and advocate your ideas to a diverse audience.

You can take a product feature from a vague abstract idea, to a demo beta implementation, to a production ready feature deployed to customers.

You are a self‑starter and problem‑solver motivated by curiosity and a desire to help others succeed, encouraged by continuous improvement.

You are a team player who is motivated to help Spellbook succeed. When things break you are eager and able to help fix them. You think of and implement ways to help and improve the work of the team as a whole.

You have a firm grasp of the fundamentals of software development and computer engineering.

You have the ability to break complex and vague customer requirements down into clear achievable plans to get product features shipped in record time.

NICE TO HAVES

Experience with Type Script.

Experience with Java script build tooling such as Vite, esbuild, and swc.

Experience in small startup environments.

Experience designing and building infrastructure on AWS in CDK.

Proven experience driving new and innovative product features from concept to production.

Demonstrated ability working with LLMs, improving prompts, and orchestrating agents.

WHY JOIN SPELLBOOK?

Embrace autonomy and accountability in a flexible work environment; we focus on outcomes and empower you to determine how to get the job done

Access our company-paid group benefits for you and your family, with $1,000 towards mental health support

Disconnect during our holiday closure and take advantage of our generous time off policies throughout the year

Enjoy monthly paid meals, an annual wellness allowance to support your well‑being and parental leave top‑ups as your family grows

Secure your stake in our success; you’ll receive competitive stock option grants as a pivotal early employee

Inclusive Hiring at Spellbook
We are committed to creating an inclusive and supportive candidate experience. Should you require any accommodation whatsoever during the interview process, please inform us without any hesitation. Spellbook is dedicated to ensuring equal treatment and opportunity in all phases of recruitment, selection, and employment, in compliance with employment law. We do not discriminate based on…
Position Requirements
10+ Years work experience
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