Senior Backend Engineer (NodeJs) Database Performance & Scalability

Vienna - Austria

Yearly Salary: EUR 60000 - 120000

Posted on: 30+ days ago

Vacancies: 1 Vacancy

Job Summary

Were 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. Were here to win and so should you be.

We are looking for a Senior Backend Engineer (Fast & scalable DB queries / Backend in every aspect) whos ready to take ownership of the performance & 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.

Tasks

Optimize database performance for high-throughput low-latency queries using indexing sharding and caching strategies.
Optimize NodeJs Backend for Performance Reliability and DI for tests
Monitor and tune backend systems for performance leveraging tools like Prometheus Grafana and APM solutions.
Enhance data pipelines for real-time processing integrating with databases like PostgreSQL / Supabase / SQLite
Collaborate with AI and frontend teams to ensure seamless integration and high availability of backend services.

Requirements

4 years in backend engineering with deep expertise in and database optimization.
Proficiency in SQL/NoSQL databases (e.g. PostgreSQL MongoDB Redis) and query optimization techniques.
Experience with how Database Systems work under the hood
Strong knowledge of monitoring tools (Prometheus/Grafana) and performance profiling for backend systems.
Excellent problem-solving skills and ability to work cross-functionally in fast-paced environments.

Benefits

Young highly motivated team with zero ego
Speed over politics: If you have an idea run with it
Direct impact on the company and the product
Real growth opportunities - we promote from within. This is a place to build your career
Earn what youre worth: We offer good base pay uncapped commissions. Your output defines your income

Interview Process

Initial Screening (20 min)

Short call. Confirm background experience with production systems and ability to explain past work clearly.

Technical Interview (90 min)
Single in-depth session covering:

System Design Design a backend for storing and retrieving high-volume messages. Discuss schema indexing caching and scaling choices.
Debugging & Performance Given an EXPLAIN plan or log snippet identify the bottleneck and propose a fix.
Core Knowledge Discuss event loop behavior query optimization connection pooling and common failure modes in distributed systems.

Were 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. Were here to win and so should you be.We are looking for a Senio...