Backend Developer
Job Location:
Brno - Czech Republic
Monthly Salary:
Posted:
Application Deadline:
Vacancies:
Job Summary
Pattern (Nasdaq: PTRN) is a leader in accelerating brands on global ecommerce marketplaces leveraging proprietary technology and AI. Utilizing more than 91 trillion data points Pattern optimizes and automates all levers of ecommerce growth for global brands including advertising content management logistics and fulfillment pricing forecasting and customer service through products like 3P Accelerator TikTok Shop PXM and ROI Hunter. Hundreds of global brands depend on Patterns ecommerce acceleration platform every day to drive profitable revenue growth across 70 global marketplaces including Amazon eBay Tmall TikTok Shop JD and Mercado Libre.
ROI Hunter is Patterns advertising technology platform helping brands manage product-level performance across Meta Google Snap TikTok and now OpenAIs ChatGPT. Are you obsessed with data partner success taking action and changing the game If you have a whole lot of hustle and a touch of nerd come build with us. We want you to use your skills to push one of the fastest-growing companies in the US to the top of the list.
Pattern has been named one of the fastest-growing tech companies headquartered in North America by Deloitte and one of the best-led companies by Inc. We place employee experience at the center of our business model and have been recognized as one of Newsweeks Global Most Loved Workplaces.What is a day in the life of a Backend Developer
- Youll build new features fix bugs and chip away at technical debt across the Creative Factory platform the image and video template editors plus the newer GenAI features (image generation background removal).
- Youll spend most of your time on the Kotlin/Spring Boot backend picking up React/TypeScript frontend work as you grow into it. The team is deliberately building toward full-stack coverage.
- Youll review code both ways: reading and understanding a teammates work and having your own reviewed in turn so no single person is a bottleneck.
- Youll use AI coding tools daily (around 80% of what the team ships starts as AI-generated) but youll read understand and take ownership of what you commit rather than shipping unreviewed output.
- Youll work in a fairly new codebase with thin documentation. The team and its tooling are only about three months old so part of the job is exploring and piecing things together rather than following a set path.
- Youll occasionally coordinate with the Feed Team and Campaigns Team on how templates connect to catalogs and ads across Meta Snapchat and TikTok and more loosely with Insights and Integration.
What will I need to thrive in this role
- Solid Kotlin experience. This is the one non-negotiable. Strong Java developers open to switching are a reasonable second choice.
- Hands-on Spring Boot and PostgreSQL. jOOQ S3-compatible storage or Google Cloud (Cloud Run Cloud SQL Cloud Functions GKE) are a genuine plus.
- Comfort with or real interest in growing into React/TypeScript and some . You dont need to be a frontend expert on day one.
- The ability to review AI-generated code critically. You can explain anything you commit not just point at the fact that it works.
- A self-starter mindset. The team is small and new so youll often be figuring things out with the context available rather than following a playbook.
- Genuine curiosity about the product itself the creative templates image and video generation not just the code behind it.
- Czech language skills since the team works day to day in Czech. Being based in or near Brno helps but isnt required.
What does high performance look like
- You ship features and fixes across both ends of the stack without needing someone else to unblock you.
- Your code reviews given and received catch real issues not just style nits and you can explain any AI-generated code you commit.
- Youre comfortable owning a piece of the platform (image templates video templates or the GenAI layer) end to end.
- You help move the team toward unifying workflows that have historically lived in separate codebases rather than just adding to the pile.
What is my potential for career growth
As the team grows past four people theres real room to move toward a senior full-stack profile: owning more architecture decisions driving the ongoing unification of the image and video codebases and getting involved in newer initiatives like the Creative Intelligence work with Patterns data science team. How fast that happens depends mostly on you. The team is small enough that taking on more scope is mostly a matter of being ready for it.
What does success look like in the first 30 60 90 days
The team and its tooling are only about three months old so a lot of ramp-up is exploring and piecing things together rather than following existing documentation.
- First 30 days: get oriented on the backend (Kotlin Spring Boot PostgreSQL) since thats where the codebase and technical debt live and start shipping small fixes with support from the team.
- By 60 days: youre picking up real backend tickets end to end and giving and receiving code reviews on that side.
- By 90 days: youre starting to branch into frontend work as your confidence grows. Nobody expects full-stack productivity this early. This is about steady progress not a deadline.
What is the team like
You will work alongside Michal (FE) and Honza (BE) and be supervised by Adam Šuba the teams Full Stack Lead wholl also be your closest day-to-day mentor as the most senior full-stack engineer on the team. Youll also work closely with Kamil (PM) and Danil (Designer). This team is data driven and results oriented. You will collaborate regularly with members of your team to implement actionable solutions. Ideas and input are encouraged from all members.
We are looking for individuals who are:
Game Changers- A game changer is someone who looks at problems with an open mind and shares new ideas with team members regularly reassesses existing plans and attaches a realistic timeline to goals makes profitable productive and innovative contributions and actively pursues improvements to Patterns processes and outcomes.
Data Fanatics- A data fanatic is someone who recognizes problems and seeks to understand them through data draws unbiased conclusions based on data that lead to actionable solutions and continues to track the effects of the solutions using data.
Partner Obsessed- An individual who is partner obsessed clearly explains the status of projects to partners and relies on constructive feedback actively listens to partners expectations and delivers results that exceed them prioritizes the needs of your partners and takes the time to create a personable experience for those interacting with Pattern.
Team of Doers- Someone who is a part of a team of doers uplifts team members and recognizes their specific contributions takes initiative to help in any circumstance actively contributes to supporting improvements and holds themselves accountable to the team as well as to partners.
- Introduction interview with our Pattern recruiting team
- Hiring manager interview
- Short take home assignment
- Final interview with Adam and Honza
- Professional reference check
- Executive review
- Offer
- Talk concretely about how you use AI coding tools day to day not just that you use them. We ship a lot of AI-assisted code here and what matters most is that you read test and can explain anything you commit.
- Show real curiosity about the product itself: the creative templates the image and video generation not only the code behind it.
- Speak specifically about Kotlin work youve owned end to end. This is the one skill we wont compromise on so depth matters more than breadth here.
- Share an example of learning a large thinly documented system mostly on your own. Our tooling is only a few months old so this role runs on exploration more than a set process.
- Tell us if you genuinely want to grow into full stack work and why rather than treating frontend as something youll tolerate.
Why should I work at Pattern
Pattern offers big opportunities to make a difference in the ecommerce industry! We are a company full of talented people that evolves quickly and often. We set big goals work tirelessly to achieve them and we love our Pattern community. We also believe in having fun and balancing our lives so we offer awesome benefits that include
25 days of holiday
3 paid sick days per year
Work from home allowance
Multisport card contribution
Free massage or physiotherapy appointment once per month
Company wide education budget for your development
Company and team events (online & offline)
Required Experience:
IC
