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Back-End Engineer

Lotus Flare

1.5

Beograd

23.09.2025.

SQL Node.js C++ iOS Android Java NoSQL Python Lua Golang SaaS HTTP Cloud RESTful intermediate

LotusFlare is a provider of cloud-native SaaS products based in the heart of Silicon Valley. Founded by the team that helped Facebook reach over one billion users, LotusFlare was founded to make affordable mobile communications available to everyone on Earth.
Today, LotusFlare focuses on designing, building, and continuously evolving a digital commerce and monetization platform that delivers valuable outcomes for enterprises. Our platform, Digital Network Operator® (DNO™) Cloud, is licensed to telecommunications services providers and supports millions of customers globally.
LotusFlare has also designed and built the leading eSIM travel product - Nomad. Nomad provides global travelers with high-speed, affordable data connectivity in over 190 countries. Nomad is available as an iOS or Android app or via getnomad.app.

Description and Responsibilities:

Backend Engineers at LotusFlare are replacing traditional business backends with an engagement-centric, dynamic product stack. They are responsible for further developing, securing, and scaling the backend infrastructure to support the platform to handle millions of concurrent API calls. Every engineer is an integral part of our global engineering team and is directly responsible for more than half of a million users of our platforms. They are working on mission-critical, highly available distributed systems.

Your day usually starts with a daily meeting/standup/quick sync-up
Your daily responsibilities include the entire software cycle from developing/testing, to code reviews and maintaining/managing your code/application on production.
You closely collaborate with product and other functional engineering teams
You take time out of your day to closely collaborate with your teammates, asking questions or providing answers
You take ownership of the code you write

Requirements:

BA/BS in Computer Science or a related technical field or equivalent practical experience would be a plus
We have a language-agnostic approach; we use Node.js, Lua, and Scala—experience with other languages such as Java, Python, Golang, C++, or similar is welcome
Experience in building secure, scalable web services
Experience with distributed systems
Experience with RESTful services
Good understanding of network stack and HTTP protocol
Experience with concurrency, multithreading, or asynchronous programming
Knowledge of data modeling in SQL and/or NoSQL environment
Experience with (any combination of) AWS, Redis, Kafka, and Cassandra would be a plus

Benefits:

Competitive salary package.
Paid lunch (In the office)
Private healthcare
Yearly bonus
Training and workshops
Truly flexible working hours
Top-of-the-class engineers to learn from and work with

About us:
At LotusFlare, we attract and keep amazing people by offering two key things:

Purposeful Work: Every team member sees how their efforts make a tangible, positive difference for our customers and partners.
Growth Opportunities: We provide the chance to develop professionally while mastering cutting-edge practices in cloud-native enterprise software.

From the beginning, our mission has been to simplify technology to create better experiences for customers. Using an “experience down” approach, which prioritizes the customer's journey at every stage of development, our Digital Network Operator™ Cloud empowers communication service providers to achieve valuable business outcomes. DNO Cloud enables communication service providers to innovate freely, reduce operational costs, monetize network assets, engage customers on all digital channels, drive customer acquisition, and increase retention.

With headquarters in Santa Clara, California, and five major offices worldwide, LotusFlare serves Deutsche Telekom, T-Mobile, A1, Globe Telecom, Liberty Latin America, Singtel, and other leading enterprises around the world.