Senior Back End Engineer

We are looking for developers that you'd be willing to switch to our tech stack Scala/Lua / Typescript from any other JVM Language. Hybrid Office location: Krakow, Aleja Pokoju 18 3 times per week at the office  This position is open to candidates across various seniority levels, from Strong Junior to Senior.The final salary offer will be based on the results of the technical interview. REQUIREMENTS: BA/BS in Computer Science or related technical field is a must 4+ years of work experience, including programming experience in Java/ any JVM language / PHP / C++ / Scala/ Lua 4+ years of experience 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 Understanding of data modeling in SQL and/or NoSQL environment Experience with (any combination of) AWS, Redis, Kafka and Cassandra would be a plus LotusFlare has always been about making an impact through software products and changing industries for the better by simplifying technology so as to simplify customer experience. Founded by the team that helped Facebook reach over one billion mobile users, LotusFlare was born out of a vision to make the mobile internet accessible and affordable to people in parts of the world who often did not have access.  From this initial work, LotusFlare’s mission now is to design, build and continuously advance a cloud-native digital commerce and monetization platform that simplifies technology and customer experience to deliver valuable outcomes to enterprises. This platform provides the software product foundation for the company’s main offering, the LotusFlare Digital Network Operator® Cloud.  LotusFlare DNO™ Cloud is a digital commerce and monetization managed service that serves as a digital BSS to deliver valuable business outcomes for communications and media services providers. WE OFFER: Flexible schedule with a possibility to work from home; Yearly bonus; Paid Lunches; Private Medical Insurance; Company covers accountant assistance expenses; ZUS Coverage; Paid sick leaves; 21 working days of vacation, public holidays; Trainings and workshops. LotusFlare employees join and remain at LotusFlare for two simple reasons. First, they can see immediately that their work makes a positive impact for LotusFlare customers and, secondly, that they grow on a personal level by developing best practice and experience in cloud-native enterprise software.  LotusFlare Founder and CEO Sam Gadodia believes that if you want to make an impact and change industries for the better, you should consider joining LotusFlare.  LotusFlare looks for people all around the world who are passionate in their aim to make an impact and change industries for the better by simplifying technology.  Headquartered in the heart of Silicon Valley with offices in EMEA and APAC, LotusFlare serves Verizon, Globe Telecom, MPIC, Digi, DISH Networks, Permata Bank, Singtel, Digicel, Supercell and other leading enterprises around the world. ,[As a Software Engineer within our Server Engineering team, you will work collaboratively with the engineering team as well as the Mobile Operator to help build a network stack to support millions of users. You come from a system or development background (or are comfortable in both areas). You are self-directed and have the ability to track solutions from design through implementation, owning every step along the way. We strive for a deep understanding of the core technologies that are being used while building redundancy and establishing best practices.] Requirements: Java, JVM, PHP, C++, Scala, Web services, REST API, HTTP, Multithreading, NoSQL, Node.js, Golang, Python, Kafka, Cassandra, BS, AWS, Redis, Data modeling Additionally: Annual bonus, Lunch card, Yearly bonus, Private Medical Insurance, Assistance expenses, ZUS Coverage, Unlimited sick leaves, 21 working days of vacation, Public holidays, Trainings and workshops, Free coffee, Canteen, Free snacks, Free lunch, Modern office.