Middle Java Engineer

6 Months ago • 3 Years +

Backend Development

Job Description

N-iX seeks a Middle Java Engineer with 3+ years of experience for back-end development using Spring Boot, microservices, and AWS (ECS, Lambda, SQS, RDS, Kinesis). Responsibilities include designing, building, and maintaining efficient code; translating business logic; performing code reviews; and troubleshooting. The role requires strong communication skills (English), SQL knowledge, REST API design, and understanding of SOLID principles. The client is a rapidly expanding mobile company, offering a dynamic and collaborative work environment.

Good To Have:

Experience scaling applications
Other programming languages
Async programming
Unix/Linux
Docker
Terraform
NoSQL databases (DynamoDB, Redis)

Must Have:

3+ years Java development experience
Spring Boot, Microservices
AWS (ECS, Lambda, SQS, RDS, Kinesis)
SQL, REST API design
SOLID principles
Back-end development

Perks:

Flexible working format
Competitive salary
Personalized career growth
Professional development tools
Education reimbursement
Corporate events

Add these skills to join the top 1% applicants for this job

java

back-end

redis

microservices

spring-boot

unix

nosql

aws

docker

sql

terraform

linux

communication

problem-solving

N-iX is looking for a talented Middle Java Engineer to join our team! Our client is one of Europe's fastest-growing mobile companies with 4.5 million active customers, 1,000 employees worldwide, and operations in five countries. The client is using the mobile virtual network operator business model.

Responsibilities:

Back-End development of product components, adopting industry Best Practices.
Work in a cross functional team with developers, testers and production support. Cooperate with BI developers, business and systems analysts, and solution architects.
Confidently communicate in a multinational environment, communication is in English.
Design, build, and maintain performant, efficient, reusable, and reliable code.
Translate business logic into code and automate business processes.
Perform code reviews, write unit tests.
Troubleshooting, problem-solving and root-cause analysis to streamline project development.

Requirements:

3+ years of commercial Java development experience.
Experience with well-known Open Source frameworks/libraries, like Spring Boot.
Experience with microservices.
Experience with AWS (ECS, Lambda, SQS, RDS, Kinesis streams).
Familiar with iterative development.
Solid understanding of communication and network protocols (TCP/IP, HTTP).
Strong analytical and debugging skills.
Strong knowledge of SQL.
REST API design.
Strong software design fundamentals (SOLID, OOP, OOD etc.).
Being result-oriented, ability to get things done.
Good communication skills in English, verbal and written.
Ukrainian language Advanced or higher.

Would be a plus:

Practical experience with scaling applications to big user numbers.
Experience with other programming languages.
Async programming, Third party integration.
Good skills with Unix/Linux.
Work experience with Docker.
Experience with Terraform.
Familiar with noSQL databases (DynamoDB, Redis).

We offer:

Flexible working format - remote, office-based or flexible
A competitive salary and good compensation package
Personalized career growth
Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
Active tech communities with regular knowledge sharing
Education reimbursement
Memorable anniversary presents
Corporate events and team buildings
Other location-specific benefits