Jobs Java, with public salary

Workload — Full-time
Duration — 4 years
Location — Munich

We are looking for a Senior Java Developer to support the maintenance, further development, modernization, and 3rd-level support of a complex public-sector software landscape in Munich. The applications include an existing Java Fat Client application, a Java web application based on JSF/PrimeFaces, EAI components, and new modules to be developed using a modern reference architecture with Java backend and Vue 3 frontend. The work includes technical design, implementation, unit testing, documentation, defect correction, and knowledge transfer within an integrated DevOps team.

Key Responsibilities
Analyze technical specifications and clarify open questions independently with the customer/team.
Implement changes and extensions in Java-based individual software systems.
Support the gradual modernization and replacement of legacy Fat Client components.
Work on Java web applications, backend services, EAI components, and new reference architecture modules.
Create and maintain unit tests, mainly with JUnit.
Fix defects found during module, integration, user acceptance, and infrastructure testing.
Contribute to system design, technical documentation, architecture documentation, developer handbook, and operational documentation.
Support 3rd-level incident analysis, root cause investigation, workaround definition, and defect resolution.
Participate in code quality improvement, refactoring, and lifecycle management activities.
Work with the customer’s CI/CD and software production environment.
Transfer knowledge to customer-side developers and internal team members.

Required Skills
Minimum 5 years of professional Java development experience.
Strong experience with Java enterprise applications.
Good knowledge of Java 11 and/or Java 21.
Experience with JEE-related standards and frameworks.
Experience with Spring and Hibernate.
Experience with WildFly / JBoss application servers.
Strong unit testing experience with JUnit.
Experience with Oracle databases, SQL, performance analysis, and database-related troubleshooting.
Experience with Maven, Jenkins, Git, Artifactory, and Sonar.
Experience working with existing/legacy software systems developed by another vendor.
Ability to understand large codebases and improve them incrementally.
Good understanding of software quality, refactoring, coding standards, logging, authorization concepts, and maintainability.
Experience writing technical documentation for developers and operations teams.
German language skills for written and spoken customer communication.

Nice To Have
Experience with Java Fat Client applications.
Experience with OpenWebStart / Java WebStart distribution.
Experience with JSF2 and PrimeFaces.
Experience with Vue 3.
Experience with Apache Artemis.
Experience in public-sector projects.
Experience with structured knowledge transfer from previous vendors or legacy teams.
Experience with test automation, functional testing, system testing, or TestLink.
Experience with proprietary or model-driven Java frameworks; TREND/Framework experience would be a strong plus.
Working Model

The work is expected to be mainly on-site in Munich, especially during onboarding and integration into the customer DevOps team. Remote work may become possible later depending on the consultant’s knowledge level and integration into the project.

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.

Project Duration: 3–4 months
Employment Type: Full-time
Compensation: Negotiable
English Level: B1+

We are looking for a Middle+/Senior Java Developer to join an ongoing project in the payments domain. The platform is already live and actively used in production, so the role focuses on enhancing existing functionality, implementing change requests, and supporting transaction processing workflows rather than building a system from scratch.

This position is ideal for an engineer who is comfortable working with mature codebases, quickly understanding existing business logic, and making reliable changes in production-critical systems.

Key Responsibilities

• Implement new features and change requests within an existing payment processing platform.
• Analyze, maintain, and enhance transaction-related business logic.
• Work with payment messaging and transaction processing flows.
• Investigate, troubleshoot, and resolve issues within a live production environment.
• Understand existing architecture and efficiently adapt current functionality to evolving business needs.
• Collaborate with the team to ensure stable and reliable delivery of new changes.

Requirements

• 3+ years of commercial backend development experience.
• Strong knowledge of Java and Spring Boot.
• Hands-on experience working with payment processing or financial transaction systems.
• Proven ability to navigate, understand, and modify complex existing codebases.
• Strong troubleshooting and debugging skills.

Mandatory Requirement

• Deep understanding and practical experience with the ISO 8583 protocol is essential.

What We Offer

• Full-time engagement on a live, business-critical payment platform.
• Opportunity to work directly with payment and transaction processing systems.
• Short-term project with immediate impact and ownership.
• Competitive compensation package with negotiable rates.

Ми, американська компанія, Plexsupply, Inc., що входить в топ 200 найбільших продавців на Amazon, шукаємо Java developer (Middle, Middle+). Компанія 20 років займається онлайн продажами на ринку США та для свого користування розробляє унікальну інтеграційну систему обліку та обробки даних.
 

Ми очікуємо від вас:

• Досвід роботи мінімум 4 роки Java developer.
• Досвід на комерційних проектах обов’язковий.
• Знання Java 17, Hibernate, JPA, Spring, Stripes, JSTL, JSP, XML, MySQL, Quartz, Tomcat, сокети, JSON, JUnit, багатопоточність, data-mining, JIRA
• Середовище розробки Idea.
• CVS — Git, Bitbucket.
• Linux — базові навички.
• HTML, JS, CSS, jQuery, AJAX — достатньо базового рівня.
• Готовність працювати з Тайм трекером (ManicTime).
• Готовність виконати Тестове завдання.
• Рівень англійської мови B1 або вище.
   

Ваші обов’язки:

• Написання коду та тестів до нього.
• Інтеграція сервера зі сторонніми API (XML, JSON, EDI), клієнт-сервер.
• Удосконалення існуючої системи інтеграції різних API.
• Робота з файлами, даними та їх обробка.
• Необхідно швидко розумітися на чужому коді.
• Вітається досвід участі у побудові архітектури проектів та додатків.
   

Компанія пропонує:

• Віддалений формат роботи
• Графік роботи: Пн-Пт з 16:00−01:00 (Київ) так як головний офіс знаходиться в New Jersey USA.
• Заробітна плата в USD
• Оплачувана відпустка від 15 днів на рік.
• Можливість працювати в міжнародній компанії.
   

Якщо зацікавила вакансія та можливість розвиватись в міжнародній компанії з крутими спеціалістами і людьми, чекаю ваше резюме із зазначенням рівня очікуваної з/п!

Про роль 

АТ «Фонд декарбонізації України» шукає Java-розробника повного циклу, який зможе самостійно або в команді створювати, запускати та підтримувати вебзастосунки — від бізнес-логіки до користувацького інтерфейсу та розгортання. 

Це роль для інженера, який не ділить роботу на «це не моє», розуміє весь життєвий цикл застосунку та готовий відповідати за результат. 

Зони відповідальності 

• Розробка серверної частини застосунків на Java (Spring / Spring Boot). 
• Реалізація вебінтерфейсів з використанням Thymeleaf, HTML, CSS. 
• Робота з базами даних (PostgreSQL, MongoDB). 
• Проєктування та реалізація бізнес-логіки цифрових сервісів. 
• Розробка та підтримка REST API та внутрішніх інтеграцій. 
• Підготовка застосунків до розгортання (Docker). 
• Участь у налаштуванні CI/CD (build, тестування, деплой). 
• Усунення помилок, оптимізація продуктивності, підтримка застосунків. 
• Участь у аналізі вимог разом із бізнес-аналітиком. 
• Дотримання стандартів безпеки та якості коду. 

Кого ми шукаємо 

• Досвід комерційної розробки на Java. 
• Впевнене знання Spring / Spring Boot. 
• Досвід роботи з Thymeleaf або іншими серверними шаблонами. 
• Практичний досвід роботи з PostgreSQL та/або MongoDB. 
• Розуміння повного циклу розробки вебзастосунків. 
• Навички роботи з Docker. 
• Базове або практичне розуміння CI/CD процесів. 
• Вміння працювати з Git та pull request’ами. 
• Самостійність, відповідальність, орієнтація на результат. 

Буде перевагою 

• Досвід розгортання застосунків у production. 
• Досвід роботи з Linux-серверами. 
• Досвід інтеграції з зовнішніми API та державними реєстрами. 
• Розуміння принципів інформаційної безпеки. 
• Досвід участі у проєктах цифровізації або eGov. 
• Навички написання автоматизованих тестів. 

Що важливо в цій ролі 

Це не вузька бекенд-роль і не SPA-фронтенд. 

Основний фокус — працюючий продукт, а не експерименти з технологіями. 

Рішення мають бути простими, стабільними та підтримуваними. 

Що ми пропонуємо 

• Реальний вплив на створення державних цифрових сервісів. 
• Роботу в команді, яка будує системні ІТ-рішення з нуля. 
• Чіткі задачі без постійної зміни пріоритетів. 
• Можливість впливати на технічні рішення та архітектуру. 
• Офіційне працевлаштування та соціальні гарантії. 
• Конкурентну заробітну плату. 

Як податися 

Надсилайте резюме через портал пошуку роботи. 

Кандидати, відібрані за результатами розгляду резюме, будуть запрошені на співбесіду. 

About the company
We are a small profitable SaaS product team with high-ownership culture, running data retrieval and e-learning services for US and EU market.

About the role
We're seeking an engineer experienced in Payment orchestration. It will be mostly Backend work with some easy Frontend tasks.
Our tech stack is mainly Java Spring Boot for Backend, Astro and different JS frameworks for Frontend.

Responsibilities
- Working with API integrations with multiple PSPs
- Creation and improvement of payment routing logic
- Supporting subscription billing logic
- Making sure the code is resilient and observable
- Working on tokenization flows
- Development of webhook handlers

Requirements
- Experience with Java (Spring ecosystem) - 7+ years
- Strong experience with Payment orchestration
- Experience with different PSPs (Stripe, Adyen, Venmo, etc.)
- Experience with REST API
- Experience working in Fintech field
- English B2

Benefits
- Unlimited PTO policy
- Corporate devices (laptop, power station)