Senior Javascript Engineer
Noibu
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See open jobs at Noibu.See open jobs similar to "Senior Javascript Engineer" Invest Ottawa: Scaling Up.Software Engineering
Ottawa, ON, Canada
Posted on Mar 13, 2025
Noibu is Canada’s Capital city’s fastest-growing technology company. We help brands recover millions of dollars in lost sales every day by helping them detect, manage and resolve critical errors on their online store. You may have heard of some of our customers like Louis Vuitton, Cartier, Mont Blanc, Air Transat, and Guess Jeans.
We're a dedicated team, driven by 4 values; Customer Obsession, Quality, Results-Oriented and Accountability. We've been recognized in 2023 as the Globe and Mail's 8th Fastest Growing Company, 12th in Deloitte Technology Fast 500, #2 in Canada for Deloitte's Fast 50 in Technology, #4 on Forbes Canada's Best Startup Employers and are Great Place to Work Certified in Canada. If you're interested in joining a team poised for greatness, we hope you'll apply!
Purpose and Objective:
The Senior JavaScript Engineer at Noibu plays a crucial role in developing and maintaining robust client-side JavaScript that runs in the browser to capture and process data from eCommerce websites. A deep understanding of browser-based scripting is essential and backend knowledge is also key to ensuring our systems scale effectively. You will work closely with cross-functional teams to design end-to-end solutions that reliably handle large volumes of data, troubleshoot integration issues, and maintain high performance in production environments.
What You'll Do:
- Develop, maintain, and optimize client-side scripts and browser SDKs using JavaScript/TypeScript.
- Troubleshoot complex problems in production environments, particularly around async behavior, API integrations, and cross-origin interactions.
- Build robust solutions that leverage Web Workers, Service Workers, and advanced browser APIs.
- Architect asynchronous JavaScript solutions that handle high-frequency data capture and real-time events.
- Write clean, efficient, testable code and implement automated testing frameworks where appropriate.
- Mentor junior engineers, conduct code reviews, and promote best practices within the team.
- Document technical implementations, system designs, and processes.
Required Qualifications:
- 5+ years of professional experience in JavaScript/TypeScript development.
- Deep, in-depth expertise in asynchronous JavaScript patterns (Promises, async/await, event loops, workers, websockets).
- Experience using and debugging complex browser APIs and understanding their performance and security implications.
- Expert knowledge of browser internals and APIs, including but not limited to Web Workers, Service Workers, local storage, IndexedDB, CORS, and WebSockets.
- Proven track record of building high-throughput, fault-tolerant software systems.
- Experience deploying and maintaining applications in Google Cloud Platform, AWS, or Azure.
- Clear understanding of DOM manipulation, event propagation, rendering lifecycle, and performance optimization techniques.
- Proficiency in SQL and relational databases (e.g., MySQL, PostgreSQL).
- Self-motivated and resourceful, capable of working independently and within a team.
- Strong written and verbal communication skills, with the ability to explain technical concepts clearly.
- A solid grasp of the software development lifecycle and Agile methodologies
Nice to have:
- Experience working with WebAssembly (Wasm) for performance-critical browser applications.
- React Native development for cross-platform mobile applications.
- Experience with eCommerce domains, tag managers, and session replay (rrweb).
- Angular framework for building robust front-end applications.
- GoLang for backend or microservices architecture.
- Rust for performance-critical applications.
- Familiarity with ClickHouse DB or other columnar/analytical databases.
Our Stack:
- Cloud Infrastructure: GCP + AWS
- Data streaming: Websockets, AWS Kinesis Fire Hose
- Data Storage: SQL databases, ClickHouse
- Messaging Systems: Pub/Sub
- Microservices: Rust, TypeScript, GoLang
- Client-side SDKs: TypeScript, React Native, native iOS, native Android
- API Integrations: GraphQL
- CI/CD and Orchestration: Fully automated builds via CI/CD in Kubernetes
- Search and Analytics: ElasticSearch
Why should you consider Noibu?
🦄 We’re working to be Ottawa’s next Unicorn
Noibu is going to impact billions of shoppers. By joining our small team on the ground floor, you have the opportunity to do something amazing with us and grow more than you even realize is possible.
💰 Compensation
We're a pay-for-impact company that is striving to lead the market in regard to compensation. Outside of your base salary, you can access our Employee Stock Option Plan and potential variable pay or bonus arrangements.
🕰️ Unlimited Time Off & Flexible Working Style
In addition to unlimited time off, we enforce an annual minimum of 3 weeks for all employees and have a company-wide holiday shutdown yearly. Our flexible working style means you get to choose the hours that work best for you.
🦷 Benefits from Day 1
Imagine waiting 3 months into your new job to go to the dentist. Never at Noibu. We hired you. We believe in you, and everyone gets access to all benefits, perks, and allowances from their first day with us 🤝
🎉 Fun & Engagement
Many companies preach having fun, but we seriously do walk the walk. Think things like Monthly Company-Wide & Team-Specific Socials, frequent post-work Happy Hours, and a MAJOR annual Holiday Party 🎄
...Plus much, much more.
If you have experience close to what we outlined but think you might be missing a few things, apply anyway! 🚀 What’s the worst that could happen? Noibu looks for people with exceptional potential, and we know that this takes many forms.
At Noibu, we are committed to building and fostering an environment where our employees feel included, valued, supported, and heard. We strongly encourage applications from Indigenous people, racialized people, people with disabilities, people from gender and sexually diverse communities and/or people with intersectional identities. If you require any accommodations, please notify us, and we will ensure you can participate fully and equally during the recruitment and selection process.
We encourage all applicants to indicate their pronouns on their application (e.g. she/her/hers, he/him/his, they/them/theirs, etc).
This job is no longer accepting applications
See open jobs at Noibu.See open jobs similar to "Senior Javascript Engineer" Invest Ottawa: Scaling Up.