Sr. Back-End Software Engineer - Ruby/Rails

Sorry, this job was removed at 10:08 p.m. (CST) on Thursday, Nov 13, 2025
3 Locations
In-Office or Remote
Software
We are the node that connects knowledge.
The Role

The chemical industry is a $5 trillion giant that's never been digitized. No playbook. No reference customers. No one's done this before.

Knowde solves the root problem holding the industry back: organizing and digitizing product data. Our AI-powered platform turns decades of unstructured information into clean master data in weeks, powering everything from sales to supply chain to customer experience for 8,000+ of the world's largest suppliers and distributors.

We've raised over $200M from Sequoia Capital, Coatue, and other leading investors to digitally transform one of the world's largest industries. There's no template for this work. But if that's what makes it interesting to you, keep reading.

About Knowde

Chemical companies are the hidden innovators behind the end-products we rely on every day. Chemistry is used to make every physical good on earth, including the products we love from Tesla, Glossier, Apple, Nike, 3M and J&J. And yet, the largest and most impactful industry in the world is still doing business the same way it did 100 years ago.

Knowde is building the first digital marketplace for the $5 trillion chemical industry. Chemical companies use Knowde to market and sell their products online for the first time ever. For buyers, Knowde has become their go-to destination to shop across the entire world of chemistry all in a single destination.

Buyers use Knowde as their go-to destination to discover and purchase chemicals from any chemical producer all in one place. By helping pull this industry online, we will accelerate the innovation behind every physical product in the world.

We’ve raised over $90M from the world’s leading investors, including Sequoia Capital and Coatue, to realize our vision.

Come Join Us!

Knowde is looking to add an immensely talented Sr. Back-End Engineer to join our Engineering team. As one of the founding engineers, you will help us invent, design, refine, and deliver the products that will enable this digital transformation. The products we will create together simply do not exist today. This is your chance to fundamentally affect how product innovation occurs globally across industries.

What You'll Be Doing

  • As a small, remote team you’ll be empowered to work directly with leadership and the product team to make decisions about your code and the future of the product.
  • Be a trailblazer by contributing to the build of a complex ecommerce marketplace, the first of its kind in the Chemicals space.
  • Have a strong emphasis on shipping features quickly without sacrificing code quality.
  • Own your projects from software design to implementation and deployment.
  • Take pride in your work by implementing cutting-edge technologies and writing state-of-the-art code.
  • Emphasize simplicity and pragmatism, which is reflected in your elegant code that other developers emulate.

What You Should Have

  • Very good knowledge of Ruby language and Rails framework
  • Great knowledge of SQL
  • Good knowledge of Sinatra is a plus
  • Ability to take tasks from requirements to deployment quickly and independently
  • Ability to work within distributed, multidisciplinary teams
  • Design and build scalable, high-availability mission-critical systems and APIs
  • High bar for quality and a phenomenal attention to detail
  • Working knowledge of deployment process (Capistrano), user authentication and authorization (Devise)
  • Ability to properly design and implement clear and scalable project structure
  • Experience with test-driven development. Ability to create and maintain useful test suite.
  • Fluent in speaking and writing English
  • Experience in web service deployments

Our Stack

  • Languages: Ruby
  • Frameworks: RoR / Sinatra
  • Databases: PostgreSQL / MySQL / MongoDB / Redis / S3

Our Perks & Benefits

  • Location: Rzeszów or Bialystok office (Poland), or remotely from Poland 
  • Flexible working hours
  • Opportunity to work on innovative projects with a strong team of engineers
  • Plenty of room to learn and grow your own career as the team scales out

We believe in supporting people to do their best work and thrive, and building a diverse, equitable, and inclusive company is core to our mission. Our goal is to ensure that Knowde upholds an inclusive environment where all people feel that they are equally respected and valued, whether they are applying for an open position or working at the company. We welcome applicants of any educational background, gender identity and expression, sexual orientation, religion, ethnicity, age, citizenship, socioeconomic status, disability, and veteran status.

--

The Controller of your personal data is Kruko Sp. z o.o., with registered office at Rejtana 36, Rzeszów. Your data is processed for the purpose of the current recruitment process. Providing data is voluntary but necessary for this purpose. Processing your data is lawful because it is necessary in order to take steps at the request of the data subject prior to entering into a contract (article 6 point 1b of Regulation EU 2016/679 - GDPR). Your personal data will be deleted when the current recruitment process is finished, unless a separate consent is provided below. You have the right to access, correct, modify, update, rectify, request for the transfer or deletion of data, withdrawal of consent or objection.

Learn More About Knowde

  • Visit our marketplace: knowde.com/marketplace
  • Read about our mission: knowde.com/about

Our Culture

We have a mission that matters. We move fast, take ownership, and don't make excuses. If you carry a chip and want to prove something, you'll fit right in. If you're looking for comfort and predictability, you won't.

We're building a team as diverse as the industry we're transforming. Different perspectives make us better.

We welcome applicants of any educational background, gender identity and expression, sexual orientation, religion, ethnicity, age, citizenship, socioeconomic status, disability, and veteran status.

Similar Jobs

GitLab Logo GitLab

Pricing Analyst

Cloud • Security • Software • Cybersecurity • Automation
Easy Apply
Remote
31 Locations
2500 Employees
84K-180K Annually

Pfizer Logo Pfizer

Data Analyst

Artificial Intelligence • Healthtech • Machine Learning • Natural Language Processing • Biotech • Pharmaceutical
Remote or Hybrid
9 Locations
121990 Employees

Coupa Logo Coupa

Site Reliability Engineer

Artificial Intelligence • Fintech • Information Technology • Logistics • Payments • Business Intelligence • Generative AI
Remote
Poland
2500 Employees

Affirm Logo Affirm

Principal Software Engineer

Big Data • Fintech • Mobile • Payments • Financial Services
Easy Apply
Remote
Poland
2200 Employees
479K-599K Annually
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
HQ: San Jose, CA
233 Employees
Year Founded: 2017

What We Do

Empowering the world's hidden innovators.

Chemistry is used to make every physical good on earth, including the products we love from Tesla, Glossier, Apple, Nike, 3M and J&J. And yet, the largest and most impactful industry in the world is still doing business the same way it did 100 years ago.
Until now.

Knowde AI to Modernize Chemical Operations
The process of digitizing and connecting a chemical or ingredient company's data is the foundation for transformation. Knowde AI converts data chaos into a clean, connected graph.

How It Works
Knowde AI ingests, extracts, structures and harmonizes your data. It is connected in a graph and stored in your dedicated MDM Platform, allowing the data to flow into any system.

Why Knowde AI
Fast- We process up to 50k files in one day.
Accurate- We ensure 99% data accuracy on all attributes.
Comprehensive- We return comprehensive master data with all attributes.
Secure- We do it with multi-layered security and data privacy.

The result
Unified systems, smoother operations and smarter decisions.

Why Work With Us

The Power of Knowde
Data is the most critical element to every successful initiative and it is often overlooked. Knowde makes sense of all the dissonance. We take data from any source and convert it into a structured source of truth.

Gallery

Gallery

Similar Companies Hiring

Standard Template Labs Thumbnail
Software • Information Technology • Artificial Intelligence
New York, NY
10 Employees
PRIMA Thumbnail
Travel • Software • Marketing Tech • Hospitality • eCommerce
US
15 Employees
Scotch Thumbnail
Software • Retail • Payments • Fintech • eCommerce • Artificial Intelligence • Analytics
US
25 Employees

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account