Jobs Java

N-iX is looking for a Senior Java Engineer to join our team!
Our client is a leading, fully regulated US-based digital asset trading platform. They provide secure, low-latency access to cryptocurrency markets, acting as a bridge between traditional finance and the Web3 ecosystem.

Role Objective:

The Senior Backend Software Engineer will be responsible for architecting, developing, and maintaining the high-performance backend services that power the core platform. Leveraging deep expertise in Java and distributed systems, you will collaborate with cross-functional teams to deliver secure, scalable solutions while exploring and integrating cutting-edge blockchain technologies.

Key Responsibilities

• Design, build, and maintain high-throughput backend services and APIs in Java.
• Drive architecture discussions to enhance system scalability, resiliency, and performance.
• Prioritize security and compliance as core aspects of service design and delivery.
• Collaborate with product, security, DevOps, and compliance teams on cross-functional initiatives.
• Mentor engineers and lead by example with high engineering standards and best practices.
• Research and prototype blockchain integration opportunities (e.g., node syncing, client tooling).
• Advocate for maintainable, modern infrastructure informed by industry best practices.

Required Qualifications

• Bachelor’s or Master’s degree in Computer Science or related field.
• At least 6+ years of professional software engineering experience.
• Strong proficiency in Java and experience with modern frameworks and distributed systems.
• Experience with performance optimization (e.g., low-latency systems, microservices).
• Knowledge of security and compliance best practices in financial or regulated contexts.
• Interest or hands-on experience in blockchain, crypto infrastructure, or decentralized systems.
• Strong collaboration and mentorship skills in a fast-moving, cross-functional environment.
• Upper-intermediate English proficiency is required.
   

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

*not applicable for freelancers

• Project Description:

  A next-generation cross-asset data management platform to provide globally consistent data and innovative tools to support business strategy for trade/sales clients, which is built on big data architecture, highly scalable, and cloud-ready. The platform enables industry-leading analytics, client reporting, regulatory compliance, surveillance, supervisory reporting, and data science solutions (data flame). The project tech stack: Java, Scala, Spring, SQL, Kafka, Hadoop.
  
  We are looking for a strong Senior Java Developer capable of being able to work within the team, being a mentor for team members, communicating with stakeholders, and being accountable for the outcomes of activities that are assigned.
  
  The role of the involves working with strong development teams (2 Senior Java Developers), the opportunity to work with big data, improving knowledge in this domain, and utilizing the resources of an international bank.

• Responsibilities:

  • Design and build frameworks for ingesting/modeling the complex Risk data
  • Develop Low latency caching to service Front office risk systems
  • Setup monitoring and management for services
  • Provide SME support for development of automated QA scripts

• Mandatory Skills Description:

  • Strong knowledge of Big Data technologies Hadoop Ecosystem (HDFS, Impala, HIVE, HBASE, etc.) and Apache Spark
  • At least 5 years of experience in software development, including professional backend software development experience;
  • Strong Knowledge of Java programming languages
  • Should be familiar with algorithms and design patterns
  • Familiarity with Linux environment, including scripting skills
  • Designing and building APIs (Java);
  • Java Server-side or Back-end development;
  • Core Java;
  • Java collections and multithreading;
  • Java Memory Management;
  • Database and SQL (writing stored procedures, designing table schemas).
  • Understanding of distributed systems.
  • Understanding of CI/CD workflow.
  
  • Ability to multi-task and work under pressure.
  • Ability to pick up new concepts and apply the knowledge.
  • Demonstrated problem-solving skills.
  • Enthusiastic and proactive approach with a willingness to learn.
  • The candidate is expected to be dynamic and flexible with a high energy level as this is a demanding and rapidly changing environment

• Nice-to-Have Skills Description:

  • Experience In-memory databases and caching
  • Job Orchestration tools like Autosys or Airflow
  • Apache Spark
  • Financial background (where possible)

• Languages:
  • English: C1 Advanced

• Project Description:

  A next-generation cross-asset data management platform to provide globally consistent data and innovative tools to support business strategy for trade/sales clients, which is built on big data architecture, highly scalable, and cloud-ready. The platform enables industry-leading analytics, client reporting, regulatory compliance, surveillance, supervisory reporting, and data science solutions (data flame). The project tech stack: Java, Scala, Spring, SQL, Kafka, Hadoop.
  
  We are looking for a strong Senior Java Developer capable of being able to work within the team, being a mentor for team members, communicating with stakeholders, and being accountable for the outcomes of activities that are assigned.
  
  The role of the involves working with strong development teams (2 Senior Java Developers), the opportunity to work with big data, improving knowledge in this domain, and utilizing the resources of an international bank.

   

• Responsibilities:

  • Design and build frameworks for ingesting/modeling the complex Risk data
  • Develop Low latency caching to service Front office risk systems
  • Setup monitoring and management for services
  • Provide SME support for development of automated QA scripts
   

• Mandatory Skills Description:

  • Strong knowledge of Big Data technologies Hadoop Ecosystem (HDFS, Impala, HIVE, HBASE, etc.) and Apache Spark
  • At least 5 years of experience in software development, including professional backend software development experience;
  • Strong Knowledge of Java programming languages
  • Should be familiar with algorithms and design patterns
  • Familiarity with Linux environment, including scripting skills
  • Designing and building APIs (Java);
  • Java Server-side or Back-end development;
  • Core Java;
  • Java collections and multithreading;
  • Java Memory Management;
  • Database and SQL (writing stored procedures, designing table schemas).
  • Understanding of distributed systems.
  • Understanding of CI/CD workflow.
  
  • Ability to multi-task and work under pressure.
  • Ability to pick up new concepts and apply the knowledge.
  • Demonstrated problem-solving skills.
  • Enthusiastic and proactive approach with a willingness to learn.
  • The candidate is expected to be dynamic and flexible with a high energy level as this is a demanding and rapidly changing environment

Job Description

We are seeking a Technical Lead to drive the design and development of the new OneAPI backend platform, a scalable API infrastructure running on cloud-native architecture (AWS & GCP). The Technical Lead will guide a small team of engineers, provide hands-on coding expertise, and ensure delivery excellence with a DevOps-first mindset.

• 10+ years of backend engineering experience with strong expertise in Java & Spring Boot.
• Proven experience building platform-level APIs and distributed systems.
• Deep knowledge of cloud platforms (AWS and/or GCP) and cloud-native architectures.
• Strong Kubernetes (K8s) experience for container orchestration.
• DevOps mindset: CI/CD pipelines, monitoring, observability, automation.
• Experience leading small, versatile teams and collaborating across disciplines.
• Experience working in a team responsible for products quality
• Strong problem-solving and communication skills.

Job Responsibilities

• Lead architecture and technical design for the OneAPI backend platform.
• Drive best practices in coding, testing, CI/CD, and DevOps culture.
• Collaborate with stakeholders to define API standards, integration patterns, and platform roadmap.
• Provide technical mentorship and guidance to the engineering team.
• Ensure solutions are secure, scalable, and optimized for performance.
• Ensure quality of develope software
• Participate hands-on in development, especially in critical/complex components.

Department/Project Description

Our client is a global leader in cloud security, enabling organizations to securely transform their networks and applications for a mobile and cloud-first world. Through its Zero Trust Exchange™ platform, it provides fast, secure, and seamless access to applications, regardless of device, location, or network. Trusted by thousands of enterprises, their products help reduce risk, lower IT costs, and deliver a better user experience by replacing traditional on-premises security with a modern cloud-delivered approach.

GD Next is a European group of companies, specialising in KYC, Fraud prevention, financial messaging, and Open Banking solutions. We integrate innovative, modern technologies into the traditional financial sector to strengthen digital banking and enhance the customer experience. By combining proven, market-validated technologies with the expertise of our team and trusted partners across Europe, we deliver real and tangible value to our clients.

We are looking for a Junior Java Software Engineer to join our Open Finance project team. This is a great opportunity for aspiring developers who want to gain hands-on experience in financial technology and grow their expertise in Java development.
The role will also include participation in 24/7 project hotline support on a rotational basis for additional compensation.

Key Responsibilities:

• Develop and maintain backend services using Java and relevant frameworks.
• Assist in implementing solutions that align with OpenFinance and PSD2 standards.
• Support the integration of third-party financial institutions and payment service providers (ASPSPs).
• Work closely with senior developers and the customer project team to gather requirements, participate in design discussions, and contribute to the development process.
• Write and maintain clean, efficient, and well-documented code.
• Participate in code reviews to ensure adherence to best practices, security, and performance standards.
• Collaborate with front-end teams for seamless integration between backend and front-end components.
• Develop unit and integration tests to maintain code quality.

• Troubleshoot and debug issues in backend services.

   

Required Skills & Qualifications:

• Basic understanding of Java and hands-on experience in backend development.
• Familiarity with core Java concepts (OOP, multithreading, collections).
• Understanding of RESTful APIs and JSON.
• Knowledge of relational databases (PostgreSQL, MySQL, or similar).
• Experience using Git for version control.
• Basic understanding of web security concepts (OAuth 2.0, JWT, encryption techniques).
• Strong problem-solving skills and willingness to learn new technologies.
• Good communication and teamwork abilities.
• B2 English (Upper-intermediate or higher).

Desired Skills:

• Experience with Spring Framework (Spring Boot, Spring Security).
• Basic knowledge of cloud platforms (AWS, Azure) and containerization (Docker).
• Familiarity with CI/CD tools and deployment practices.
• Exposure to Agile methodologies (Scrum, Kanban).
• Interest in financial technology (FinTech) and willingness to learn OpenFinance and PSD2 regulations.

Additional Information:

• Candidates will have the opportunity to grow within the company and gain exposure to modern financial technologies.
• The role will include participation in 24/7 support on a rotational schedule (1 day on duty / 1 day off duty) for additional compensation.
• This is a great opportunity for junior developers to develop real-world experience in a fast-paced and innovative financial services environment.
• Location: Ukraine.
• The project language is Ukrainian.

We're helping a company replace their current fully outsourced, underperforming India-based team with a strong team that we're assembling in Eastern Europe.
 

The company is an early-stage healthtech startup replacing legacy benefits infrastructure with a modern, proprietary platform — mobile apps, multi-stakeholder portals, and claims tooling — and building the engineering team to own it from the ground up. The startup is successful, well funded and profitable, so you don't ever have to worry about the company closing doors.
 

We're hiring 3-4 middle-to-senior level developers. 
 

Tech Stack: Java Spring Boot, React, AWS. Native mobile apps.
 

As a Senior Developer, you'll be a core contributor to building and maintaining a modern healthtech platform. You'll work closely with the Tech Lead to implement architectural standards, take ownership of features end-to-end, and help set the bar for code quality across the team. This is a hands-on role — you'll be deep in the codebase every day.
 

– You must be comfortable in Java and Spring Boot.

– You are comfortable working across front end (React) and back end.

– You are very comfortable using Claude Code and will show off your workflows on the interview
– Bonus points for knowledge of HIPAA compliance 

About the Role

We are a leading legal service provider operating at the intersection of technology and law. With over 60 years of tradition and a team of around 500 employees, we develop modern software solutions that make a real difference — for our clients, our teams, and the entire organization. Join us in Hamburg as a Senior Java Software Engineer.

Your Responsibilities

• Design, develop and deploy proprietary software solutions end-to-end — from concept to production
• Evolve and extend our modern tech stack: Spring Boot, Java, Vaadin, Docker Swarm, GitLab CI, Oracle
• Raise code quality through reviews, refactoring, and clean architecture
• Improve the developer experience — better tooling, faster feedback loops, less friction
• Drive the migration of legacy systems (C++, Ruby, Java 8) to the modern stack — with real impact in mind, not just a technology swap
• Automate manual processes and model business logic in software
• Explore and integrate AI tools and LLMs into development and business workflows

Share knowledge with the team through tech talks, pair programming, and everyday collaboration

What You Bring

• Several years of experience in application development with strong command of Java and Spring Boot
• Solid understanding of maintainable, well-structured software architecture
• Hands-on experience with relational databases, particularly Oracle, and ORMs such as Hibernate / Spring Data JPA
• Familiarity with Docker, containerized deployments, and CI/CD with GitLab
• Hands-on mentality — you tackle problems rather than manage them; legacy code doesn’t scare you
• Curiosity about AI technologies and LLMs, and how they can enhance engineering workflows

Strong communication skills and comfort working in agile teams

What We Offer

• Flat hierarchies, open doors, and a collaborative team culture
• Meaningful personal development opportunities
• Comprehensive health management program
• Flexible working hours and hybrid work options (home office)
• Modern office in central Hamburg with a strong engineering culture

🌍 Who we are:

Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies in a wide range of industries.

🧩 About the Product:

We are building an AI-first platform that fuses multiple maritime data sources into a unified operational picture. The system builds a digital twin of global maritime activity, applies behavioral analytics and predictive AI models to surface smuggling, illegal fishing, container risk, and other compliance or security threats, and presents mission-grade intelligence to both commercial and government stakeholders. 

🌟 About the Role:

As a Senior Backend (Java) Engineer, you will own the end-to-end development of core data processing services within our maritime intelligence platform. 

You will collaborate closely with data scientists, analysts and software engineers to design and implement scalable microservices and streaming solutions. Leveraging AWS, Spring Boot and Kafka, you’ll tackle technical challenges around high-throughput ingestion, low-latency processing and data integrity.

📈 Key Responsibilities:

• Develop robust, high-performance backend services using Java and Spring Boot.
• Implement real-time data streaming solutions with Apache Kafka.
• Design, build and maintain scalable data pipelines for collection, processing and transformation from diverse sources.
• Leverage AWS services for data storage, processing and analytics following security and performance best practices.
• Monitor, troubleshoot and optimize service performance to identify and eliminate bottlenecks.
• Ensure data integrity, reliability and availability through effective ETL processes and quality checks.
• Drive improvements in architecture, code quality and automation across the backend codebase.

💻 Required Competence and Skills:

• At least 5 years of professional experience as a Backend Engineer.
• Proficiency in Java and Spring Boot within a microservices architecture.
• Experience implementing and operating Kafka streaming solutions.
• Practical knowledge of AWS for data storage, processing and analytics.
• Strong problem-solving skills with attention to detail.
• Ability to work independently, challenge decisions and lead technical discussions.
• Excellent communication skills for cross-team collaboration.
• Bachelor’s degree in Computer Science, Engineering or a related field.

➕ Nice to Have:

• Experience designing and building ETL processes for data transformation and integration.
• Familiarity with Apache Spark for large-scale data processing.
• Practical agentic AI experience (Claude Code or alternatives) utilizing MCP, custom .md files, and orchestrating subagent workflows.
• Knowledge of Python or Node.js for supporting integration tasks.
• Prior work with maritime, geospatial, defense or logistics domains.

🚀 Why Us:

- We provide 20 days of vacation leave per calendar year (plus official national holidays of a country you are based in).

- We provide full accounting and legal support in all countries we operate.

- We utilize a fully remote work model with a powerful workstation and co-working space in case you need it.

- We offer a highly competitive package with yearly performance and compensation reviews.

About Us: InnovatelU is a dynamic tech company delivering cutting-edge solutions. We're looking for a passionate Java Developer to join our team. If you have a solid Java foundation, are eager to grow, and learn quickly, we want to hear from you! 

Requirements: 
- Strong knowledge of Java 
- Knowledge of Spring (Spring Core, Spring AOP, Spring MVC, Spring Security, Spring Boot) 
- Familiarity with REST APIs, web services 
- Proficiency in version control tools (Git) 
- Experience with build tools like Maven and Gradle 
- Experience with relational databases (PostgreSQL) 
- Expertise in containerization (Docker) 

- Experience in unit and integration testing 
- Strong communication skills and teamwork ability 
- English level: Intermediate or higher 

Will Be a Plus: 

- Solid understanding of design patterns 

- Experience with NoSQL databases like MongoDB and Redis 

- Familiarity with messaging systems like Kafka and RabbitMQ 

- Experience with microservices architecture 

Responsibilities: 

- Collaborate with senior developers and project managers 

- Assist in designing, coding, and testing applications 

- Write well-designed, efficient, and testable code 

- Participate in code reviews 

- Debug and resolve technical issues 

- Contribute to application documentation 

Interview Stages: 

1. Test Task: 1 hour 

2. HR Interview: 30 minutes 

3. Technical Interview: 1 hour 

We Offer: 

- Full Remote 

- Constant support and mentoring 

- Paid 5 working days of sickness per a year; 

- Paid all official Ukrainian holidays; 

- 18 working days of vacation per a year; 

- Opportunity for professional growth and career development 

If this sounds interesting to you, let's talk!

Workload: full-time, remote
Start: asap
Duration: long-term cooperation
Location: any
English: B2
Interview: 2 rounds (quick general&technical interview + tech interview with the main client)

We’re looking for a Senior React Developer (7+ years) with some Java skills to join a product team building a multi-app system centered around an operator console - a real-time interface for controlling and managing robotic machinery.

Requirements
The team: 4 backend engineers. You’ll be the frontend lead, owning the React layer with occasional Java touchpoints.

What we’re looking for:

• 7-8+ years of experience, React as your primary stack
• State management: Redux, Zustand, or Context API
• Java familiarity is a strong plus (full-stack capacity welcome)
• Strong English communication

Job Description

4+ years of experience in Java development
Strong knowledge of Java 8+ and Spring Framework
Experience with Spring Boot, JPA, and Hibernate
Experience working with SQL and relational databases such as PostgreSQL or MySQL
Experience with development and CI/CD tools such as GitLab, Jenkins, Gradle, and Docker
Strong verbal and written English communication skills (Upper-Intermediate or higher)
Ability to communicate effectively within a cross-functional distributed team
Experience with cloud technologies and microservice architecture will be a plus
Experience with front-end technologies (JavaScript, Angular, npm) will be considered an advantage

 

Job Responsibilities

Participate in software design and architecture discussions across all development stages
Collaborate with distributed cross-functional teams and stakeholders
Analyze, estimate, and implement software requirements
Design, develop, and maintain efficient, reusable, and reliable backend services
Contribute to front-end development activities when needed
Ensure application performance, quality, security, and responsiveness
Maintain high code quality standards through code reviews, testing, and best engineering practices

Department/Project Description

Our client, a leading medical device manufacturer, has a digital platform for managing neurological health information.
GlobalLogic Team is collaborating with the Client’s team on the development and testing of a web application that centralizes medical data from patients.The application empowers clinicians to monitor patients' health status, track patient healing progress, analyze trends, and make well-informed decisions. The application encompasses multiple features that enhance the documentation and evaluation of the decision-making process.

About PredictSpring

PredictSpring is a market-leading company shaping the future of omni-channel retail and modern POS technology. We help global retail and lifestyle brands deliver seamless, scalable, and modern customer experiences across digital and in-store channels.

We are looking for a highly skilled and experienced Senior Java Full Stack Engineer to join our team and help build secure, scalable, and high-performance software solutions across our platform, products, and business operations.

In this role, you will work across backend development, frontend applications, cloud infrastructure, microservices, APIs, messaging systems, and CI/CD workflows. You will play a key role in building reliable enterprise-grade systems that support modern commerce, retail operations, and customer experience.

Responsibilities

As a Senior Java Full Stack Engineer, you will:

• Design, develop, and maintain scalable, secure, and high-performance backend services using Java and frameworks such as Spring Boot, Spring Cloud, Spring MVC, and Hibernate.
• Build and maintain application workflows, APIs, services, and platform features that support PredictSpring’s product and business operations.
• Develop and implement RESTful APIs and GraphQL services for seamless integration between frontend applications, backend systems, third-party platforms, and internal tools.
• Work with cloud-based infrastructure using AWS services such as EC2, S3, Lambda, and RDS, as well as Azure services such as Azure Functions, Azure SQL Database, and App Services.
• Build responsive and maintainable frontend features using modern JavaScript frameworks such as React.js, Angular, or Vue.js.
• Work with messaging and event-driven technologies such as Apache Kafka, RabbitMQ, ActiveMQ, and JMS.
• Utilize Docker and Kubernetes to containerize applications, manage microservices, streamline deployments, and support scalable production environments.
• Collaborate with cross-functional teams, including product, engineering, design, operations, and business stakeholders, to deliver high-quality software solutions.
• Troubleshoot, debug, monitor, and optimize applications for performance, scalability, reliability, and maintainability using tools such as JProfiler, New Relic, Prometheus, or similar platforms.
• Write clean, efficient, maintainable, and testable code following Java best practices, design patterns, and modern software engineering standards.
• Participate in code reviews, architecture discussions, technical planning, and continuous improvement of engineering practices.
• Implement and manage CI/CD pipelines using tools such as Jenkins, GitLab CI, CircleCI, AWS CodePipeline, and Azure DevOps.
• Ensure security, data protection, authentication, authorization, and secure communication across applications and services using tools and practices such as Spring Security, OAuth2, JWT, SSL/TLS, and OWASP guidelines.
• Stay current with the latest Java technologies, cloud platforms, DevOps practices, and industry trends, and apply relevant improvements to PredictSpring’s platform and operations.

Requirements

We are looking for someone with:

• Excellent communication skills, including fluent verbal English, with the ability to explain technical concepts clearly and collaborate effectively across distributed teams.
• Bachelor’s or Master’s degree in Computer Science, Software Engineering, Information Technology, or a related field.
• Proven experience as a Full Stack Engineer or Full Stack Developer, with a strong focus on Java 8 or later for backend development.
• Strong hands-on experience with Java frameworks such as Spring Boot, Spring Cloud, Spring MVC, Hibernate, and JPA.
• Strong experience designing, building, and maintaining scalable backend systems, APIs, microservices, and enterprise-grade applications.
• Experience with cloud technologies such as AWS and Azure, especially AWS EC2, AWS Lambda, AWS RDS, Azure Functions, Azure App Services, and Azure SQL Database.
• Extensive experience with frontend technologies such as JavaScript, React.js, Angular, or Vue.js.
• Expertise in containerization and orchestration technologies such as Docker and Kubernetes.
• Solid experience with SQL and NoSQL databases, including SQL Server, PostgreSQL, MySQL, MongoDB, Cassandra, Redis, or similar technologies.
• Experience with message brokers and event-driven architecture using tools such as Apache Kafka, RabbitMQ, or ActiveMQ.
• Strong working knowledge of RESTful API design and GraphQL for building reliable backend services.
• Experience with CI/CD tools such as Jenkins, GitLab CI, CircleCI, and cloud deployment services such as AWS CodePipeline and Azure DevOps.
• Knowledge of unit testing and integration testing frameworks such as JUnit, Mockito, Spring Test, or similar tools.
• Understanding of security best practices in the Java ecosystem, including Spring Security, OAuth2, JWT, SSL/TLS, and secure API design.
• Experience with version control systems such as Git and collaborative development workflows.
• Familiarity with agile development methodologies, sprint-based workflows, and collaborative engineering practices.
• Strong problem-solving and debugging skills, with the ability to resolve complex technical issues across both frontend and backend layers.

Preferred Qualifications

Nice to have:

• Experience with microservices architecture and distributed system design.
• Experience with tools and frameworks such as Spring Cloud, Netflix OSS, Hystrix, Eureka, or Docker Swarm.
• Familiarity with DevOps practices and infrastructure-as-code tools such as Terraform, Ansible, and CloudFormation.
• Experience with serverless computing using AWS Lambda or Azure Functions for scalable, event-driven applications.
• Experience with real-time data processing using tools such as Kafka Streams or message queue-based architectures.
• Familiarity with monitoring, observability, and logging tools such as Prometheus, Grafana, ELK Stack, Datadog, New Relic, or similar platforms.
• Experience with Agile/Scrum methodologies and project management tools such as JIRA.
• Experience supporting production systems, monitoring application health, and improving reliability over time.
• Experience working with high-traffic, scalable, customer-facing SaaS or enterprise platforms.
• Experience in retail, e-commerce, omni-channel commerce, or POS technology is a strong plus.

Why PredictSpring?

• Join a market-leading company shaping the future of omni-channel retail and modern POS.
• Work on high-impact engineering challenges at the intersection of commerce, cloud technology, and customer experience.
• Collaborate with a talented global team in a flexible remote work environment.
• Enjoy opportunities for growth, learning, and professional development.
• Contribute to products used by some of the world’s most recognized retail and lifestyle brands.
• Be part of an innovative, collaborative, and engineering-driven culture focused on building reliable, scalable, and measurable business value.

👨‍💻We invite a Junior/Middle Java or Kotlin Developer to join our team for long-term cooperation. Gransoft develop an international health insurance portal. Our project has become especially important at this time.

▪️Office Location: Uzhhorod or Gdansk

Requirements:

— Strong and confident knowledge of Java or Kotlin, Hibernate, Spring, MySQL

— Experience with any software development 1-5 years

— Experience with Java/Kotlin provides a significant advantage

— An intermediate-level proficiency in English: reading, writing and speaking

— Responsible attitude to the tasks and deadlines

— Work from office only

We offer:

— Interesting and challenging project

— Creative and friendly atmosphere

— Our company policy is to welcome your ideas and suggestions

— An international team of experienced Java/Kotlin developers

— Paid vacations and days off during national holidays

— Flexible work schedule

— 8-hour workday

— Office in Uzhhorod or Gdansk

— Paid English language courses

— The company provides relocation support and, if needed, assists with the moving process and finding accommodation

More details could be given during an interview.

Please include your Telegram username in CV.

About the Role 
We're looking for a  Backend Developer to design and build the backend of our products — REST APIs, services, and AI integrations from data model to production. You'll own features end-to-end, contribute to architectural decisions, and occasionally jump into the React frontend when it makes sense.

What You'll Do

• Design, build, and maintain backend services and REST APIs for our products – from data model through to production.
• Integrate AI / LLMs into product features.
• Design and implement clean, well-documented REST APIs (contract-first where it fits).
• Write maintainable, testable code with strong unit and integration test coverage.
• Take part in code reviews, both giving and receiving constructive feedback.
• Collaborate closely with product managers, designers, frontend engineers, and QA in an Agile team.
• Investigate and resolve bugs, and help improve performance and reliability.
• Contribute to technical and architectural decisions.
• (A plus) Occasionally contribute to the React frontend when a feature spans the stack.
   

What We're Looking For

Must-have (backend):

• 3+ years of commercial backend development experience in Java.
• Strong Java Core; hands-on experience with Spring Boot (Spring MVC, Spring Data JPA, Hibernate), Spring Security, and Spring AOP.
• Familiarity with MapStruct for entity-to-DTO mapping and Lombok.
• Practical experience designing and consuming RESTful services.
• Good SQL skills with a relational database (PostgreSQL); schema migrations with Flyway.
• Understanding of OAuth2 / JWT-based authentication and role-based access control.
• Comfortable with Docker and Docker Compose.
• Confident with Git and a standard branching workflow; familiarity with Gradle.
• Experience writing unit and integration tests (JUnit, Testcontainers).
• Genuine interest in integrating AI / LLMs into product features.
• Solid understanding of OOP, web fundamentals, and clean-code principles.
• English at Upper-Intermediate (B2) level — able to communicate in writing and on calls.
   

A big advantage:

• Frontend experience with React — JavaScript/TypeScript, HTML, CSS/SCSS, and the modern React ecosystem: client state (Zustand), server state / data fetching (TanStack Query), routing (React Router), and a modern build tool (Vite).
• Hands-on experience integrating AI / LLMs into real product features.
• Contract-first / OpenAPI workflow — OpenAPI 3 with code generation (openapi-generator).
• Experience integrating an identity provider such as Keycloak.
• AWS exposure (EC2, RDS, CloudWatch) and structured (JSON) logging.
• End-to-end testing with Playwright.

We believe in thinking big – creating solutions that have a meaningful, far-reaching impact, whether through digitizing governments, improved healthcare, convenient telecom services or creating a competitive edge and agility for large businesses, industry, and manufacturing companies. Our projects have touched more than half a billion people’s lives worldwide, and the vision is to build a Seamless Society.

To reach our ambitious goals, we are looking for a Senior Software Developer.

Responsibilities
Have good communication skills (spoken and written) with fluent English as essential
Like a challenge of collaboration with globally distributed teams
Articulates the high-level business value on projects
Creates and maintains documentation of APIs and technical user stories
Approve technical concepts of realizations
Knows and can explain ways to automate documentation generation
Run an agile Scrum or Kanban process for a team when needed
Identify performance issues with software applications and troubleshoot performance problems in distributed systems
Coordinate evaluation of tools and frameworks for the engineering team
Analyze and understand flows and end-to-end interactions for a distributed system

5+ years of experience

Qualifications
Proficient knowledge of Java and Spring Framework
Know the major Java frameworks and libraries
Cloud native development experience from one of the major providers: AWS, GCP or Azure
Knowledge of Docker/Kubernetes is considered as plus
Understands different types of programming methodologies (functional vs. object-oriented, imperative vs. declarative) and scenarios where each would be applicable
Optimizes SQL schemas and understands NoSQL solutions and trade-offs involved
Proficient using version control systems, preferably Git
Proficient and capable to introduce and setup CI and DevSecOps practices
Understands and implements performance and security testing practices

About the company

We are a global digital consulting and engineering organization. We combine large-scale transformation capability with an agile delivery model, working across public and private sector clients worldwide. The environment is low-hierarchy, collaborative, and focused on solving complex distributed system challenges with modern engineering practices.