Jobs Java

Responsibilities:

• Work in SCRUM team 
• Design and develop high-load microservices
• Produce high-quality code covered with different levels of tests
• Maintain services on production and assure their stability and performance
• Provide code review for teammates 
• Contribute to the Company’s development processes and practices 

Requirements:

• 5+ years of professional Java development experience, including at least 2 years in a product company or product-focused environment
• Proficiency in Java 17+ and modern backend development practices
• Solid experience with the Spring Framework and Spring Boot
• Practical experience designing and developing microservices
• Experience with MySQL, Redis, and other SQL or NoSQL databases
• Experience with Kafka and event-driven architectures
• Experience building REST APIs and working with Protobuf
• Hands-on experience with SQL and database schema design
• Experience with CI/CD practices and tools such as GitLab CI
• Ability to write unit and integration tests using tools such as Mockito, WireMock, and Testcontainers
• Strong understanding of SOLID principles, clean code, and common software design patterns
• Experience with Git and modern software development workflows
• Excellent troubleshooting and problem-solving skills
• Good communication and collaboration skills
• English proficiency at Intermediate level or higher

AI-enabled software development

• Hands-on experience using AI coding agents in day-to-day software development.
• Ability to break down engineering goals into clear, well-scoped tasks for AI agents.
• Ability to provide effective context, constraints, acceptance criteria, and validation steps.
• Strong awareness of the risks and limitations of AI-generated software.
• Ability to distinguish where AI can accelerate delivery and where human judgment is essential.
• Interest in exploring and improving agentic development workflows.
• Willingness to share effective workflows and lessons learned across engineering team.

Would be great to have:

• Experience with Aerospike
• Experience with Spring Cloud
• Experience with Docker and Kubernetes
• Experience developing and operating high-load distributed systems
• Experience with Google Cloud Platform (GCP) and its core services, including BigQuery

What we offer:

• International company with several offices in different locations : Tel-Aviv, Kyiv, Warsaw, Limassol.
• Granting an Option;
• A professional environment with great people to work with;
• Competitive salary, performance review;
• Flexible working hours, no one here tracks your work time because our culture is built on trust and cooperation;
• Social and welfare packages;
• 20 working days paid vacation, official public holidays and 100% sick leave coverage;
• Opportunities to make a difference, to develop and grow;
• Regular corporate celebrations, team building and fun activities;
• Comfortable office in the city center. Our Kyiv office is open 24/7 with all safety and health measures in place.

Ajax Systems is an international technological company and Europe’s largest security system manufacturer. The product portfolio includes 280 wireless and wired devices for security and automation. Today, Ajax protects over 4.5 million users in 187 countries worldwide.

We are looking for a smart and technically proficient Middle/Senior Java Developer to join our team in Kyiv office.

The team develops internal tools to automate the management of manufacturing operations. The goal is to transform how our factories are planned and managed, taking the organization to a new level of operational efficiency and control within the next year.

Responsibilities:

• design and implement core backend services and data pipelines.
• Write clean, readable, and maintainable code.
• Develop services for the B2B product line.
• Actively participate in developing and improving the architecture.
• Document architectural decisions and operational knowledge for successful deployment and service operations.
• Ensure appropriate test coverage with unit and integration testing.
• Focus on performance and cost efficiency within your areas of responsibility.
• Follow best practices in software design and development and promote them within the team.
• Ensure reliable alerting, dashboards, and runbooks for production services.
• Debug production issues, analyze complex cases, and conduct investigations.
• Work smoothly in a technical culture with testing, CI/CD, and DevOps.
• Collaborate within the team and with other engineering teams to develop new features and products according to business needs.

Required experience:

• 4+ years of professional experience in Java development in an enterprise environment.
• Strong understanding and practical experience with Java Concurrency.
• Strong knowledge of Kotlin or solid Java expertise with a willingness to transition to Kotlin.
• Practical experience with Spring and SQL.
• Hands-on experience with analytical databases such as Databricks, BigQuery or ClickHouse.
• Understanding of SOA, microservices and event-driven architecture.
• Practical experience with AWS and understanding of cloud development principles.
• Experience building and scaling high-load systems with a focus on high availability and reliability.
• Strong analytical and problem-solving skills.

Would be a plus:

• experience with Kotlin.
• Experience with Angular or React.js or Vue.js.
• Experience with Power BI.

We offer:

• the opportunity to share and implement your own ideas that could impact products and production.
• Work with a motivated team and an environment with a zero-bullshit culture.
• Medical insurance.
• Corporate English classes.
• Compensation for professional training.
• The chance to take part in beta testing of Ajax security systems — receive and test new devices before their release.

Ajax Systems is a Ukrainian success story that has grown into a global product. Ajax devices are trusted by more than 4.5 million end users and 330,000 PRO users in over 180 countries. The company provides comprehensive solutions to protect residential and commercial properties of all sizes. Today, Ajax portfolio includes 280 devices for intrusion protection, video surveillance, fire safety, and comfort and automation.

We build a payment-orchestration platform (PSP hub) that connects merchants to dozens of payment providers. You'll join one of two small backend teams (5 developers each — seniors, a Tech Lead, and an Architect) building and maintaining integration services that process real financial transactions in production.

You'll work alongside experienced engineers and strong QA, but we’re looking for someone who can already work independently on well-defined Java backend tasks and take ownership of their code from implementation through testing and review.

• Format: Remote · Full-time
• Level: Junior+ — 1–2 years of recent commercial Java development experience

• English: B1+ (tooling, documentation, and some partner communication are in English)

   

What you'll be working with

• Java 25, Spring Boot, Apache Camel
• REST APIs, SQS, Redis, PostgreSQL
• Cloud & DevOps: AWS, EKS, Terragrunt, Helm, Flux
• Monitoring: OpenSearch, VictoriaMetrics, Grafana

• GitLab & CI/CD

   

What we're looking for — essentials

• 1+ year of recent commercial Java development experience
• Strong Java Core fundamentals and OOP
• Hands-on commercial experience with Spring / Spring Boot
• Practical experience with REST APIs
• Experience working with SQL / PostgreSQL
• Ability to read, understand, debug, and modify an existing Java codebase
• Experience writing unit and/or integration tests
• Understanding of the standard development flow: task → implementation → code review → testing → release
• Ability to work independently on well-defined tasks, ask the right questions, and take ownership of the result

• Good communication and ability to work effectively within a development team

   

Nice to have

• External API / third-party integrations
• Payment / fintech / PSP experience
• Apache Camel
• SQS, RabbitMQ, Kafka or other message queues
• Docker / Kubernetes / Helm
• AWS
• GitLab or other CI/CD tools
• Redis

• Keycloak 26

   

What you'll do

• Build and maintain Java backend services and provider integrations
• Work with and extend an existing production codebase
• Develop and integrate REST APIs and external services
• Write clean, tested, maintainable code
• Debug production issues and improve service stability
• Participate actively in code reviews
• Take ownership of assigned tasks from implementation through testing and release
• Collaborate with Backend, QA, DevOps, Product, and Architecture

How we work / what we offer

• Flexible remote schedule
• Paid sick leave and vacation
• All the equipment you need
• Internal events: open discussions, product meetups, soft-skills training
• Flat structure, no micromanagement, fast decisions

• Experienced engineers around you for code reviews, technical discussions, and mentorship

   

Hiring process

1. Intro call (~30 min)
2. Technical interview
3. Live coding / code-reading & modification session

4. Offer

    

Ready to work on real production systems, take ownership of your code, and grow into a strong Java backend engineer? Join us.

We are looking for an experienced Senior Java Full Stack Engineer to join our development team.
 

Our customer – integrated Shipping Services has set itself apart as an independent carrier with a fresh, unique approach. His strategy as a global niche carrier offers distinctive advantages to customers worldwide. We have created a smart, efficient network that ensures stable, reliable services, and we have made it our mission to focus on the needs of our customers, which stand at the heart of all our decisions. The main idea of our product operates in select trades, where it has a competitive advantage and where it can provide superior service. We maintain a flexible partnership approach with other major carriers, and our new line structure is a much-needed alternative to customers concerned about the current alliance-dominated market.
 

Responsibilities:

• Hands-on full-stack development of innovative applications
• Owning the entire development cycle, including design, architecture, development, and DevOps
• Working in XP with Remote pairing
   

Requirements:

• BS degree in Computer Science or equivalent combination of education and experience
• 5-6+ years of full-stack development
• 5-6+ years of experience in the following technologies: Java, Spring
• Experience with Functional Programming and Java Streams
• 2+ years of experience in front-end development with React
• Experience with developing a reactive UI (Reactive JS)
• 2+ years of experience in TDD/BDD development in the following frameworks: Junit, Jasmin, Mockito, Protractor/Selenium
• 2+ years of experience in micro-services-based architecture and tools (Spring Boot/Cloud)
• Experience in DevOps development and Jenkins
• Experience in development in Kotlin – an advantage
• Experience in designing, developing, and deploying cloud/hybrid-based solutions
• Experience in developing and deploying in container-based environments (Kubernetes, Cloud Foundry)
• Familiarity with the following design concepts: micro-services, service discovery, circuit breaker
• Self-starter with the ability to appropriately prioritize and plan complex work in a rapidly changing environment
• Versatility and the capability to switch easily between different tasks and technologies
• Experience in assessing a broad range of information solutions and products
• Strong critical thinker with problem-solving aptitude
• Good English - verbal and written