Software Development

chatarmin.com GmbH

11-50

The workplace is fully accessible for people with reduced mobility.

Barrier-free access

An on-site cafeteria serving meals during working hours.

Cafeteria

Funded training, courses and certifications to grow your skills.

Career Training

A work phone, in some cases also for private use.

Company cellphone

A laptop and the software you need, provided by the employer.

Company laptop

A share in the company's success through equity or stock options.

Company stock options

A free or subsidised lunch on working days.

Free lunch

Free fruit, snacks and small refreshments at the office.

Free snacks

Work from home for part of your working week.

Home Office

A funded co-working space if you prefer not to work from home.

Paid co-working option

A covered or subsidised ticket for buses, trains and local transit.

Public transportation benefits

A subsidised gym or sports membership of your choice.

Sport membership

 Travel costs for your commute or work trips are reimbursed.

Travel expenses compensation

Community

Determination

Drive

Equity

Fairness

Hard work

Honesty

Mutual respect

Open-mindedness

Ownership

Chatarmin Capetown Workation

Chatarmin Offsite @ Bergmühle 

We’re a real startup, not a playground. Bootstrapped and fast-growing.
Our motto: Move fast, break things. Chatarmin to the moon.
We are built for e-commerce brands in the B2B SaaS space. High pace, high expectations, zero corporate nonsense. We're here to win and so should you be.
We are looking for a Senior Backend Engineer (Fast &amp; scalable DB queries / Backend in every aspect) who’s ready to take ownership of the performance &amp; reliability of our backend. 
You should thrive under pressure, work autonomously, and have a hands-on attitude. Think like an athlete: disciplined, self-motivated, and pushing through when it gets tough.
<h2>Tasks</h2>
<ul>
<li>Optimize database performance for high-throughput, low-latency queries using indexing, sharding, and caching strategies.</li>
<li>Optimize NodeJs Backend for Performance, Reliability and DI for tests</li>
<li>Monitor and tune backend systems for performance, leveraging tools like Prometheus, Grafana, and APM solutions.</li>
<li>Enhance data pipelines for real-time processing, integrating with databases like PostgreSQL / Supabase / SQLite</li>
<li>Collaborate with AI and frontend teams to ensure seamless integration and high availability of backend services.</li>
</ul>
<h2>Requirements</h2>
<ul>
<li>4+ years in backend engineering, with deep expertise in Node.js and database optimization.</li>
<li>Proficiency in SQL/NoSQL databases (e.g., PostgreSQL, MongoDB, Redis) and query optimization techniques.</li>
<li>Experience with how Database Systems work under the hood</li>
<li>Strong knowledge of monitoring tools (Prometheus/Grafana) and performance profiling for backend systems.</li>
<li>Excellent problem-solving skills and ability to work cross-functionally in fast-paced environments.</li>
</ul>
<h2>Benefits</h2>
<ul>
<li>Young, highly motivated team with zero ego</li>
<li>Speed over politics: If you have an idea, run with it</li>
<li>Direct impact on the company and the product</li>
<li>Real growth opportunities - we promote from within. This is a place to build your career</li>
<li>Earn what you’re worth: We offer good base pay + uncapped commissions. Your output defines your income</li>
</ul>
Interview Process
Initial Screening (20 min)
<ul>
<li>Short call. Confirm background, experience with production systems, and ability to explain past work clearly.</li>
</ul>
Technical Interview (90 min) Single, in-depth session covering:
<ul>
<li>System Design — Design a backend for storing and retrieving high-volume messages. Discuss schema, indexing, caching, and scaling choices.</li>
<li>Debugging &amp; Performance — Given an EXPLAIN plan or log snippet, identify the bottleneck and propose a fix.</li>
<li>Core Knowledge — Discuss event loop behavior, query optimization, connection pooling, and common failure modes in distributed systems.</li>
</ul>

Senior Backend Engineer (NodeJs) - Database Performance & Scalability

Employee

Key Account Customer Success - B2B SaaS  - WIEN - Top Startup - (m/w/d) 

Technical Support Engineer (m/w/d) IN WIEN

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