Jobs Java

Привіт 👋
У OTP Digital ми створюємо мобільний банкінг, який має бути простим і зручним щодня.
 

Для цього ми будуємо масштабовану мікросервісну архітектуру, розробляємо нативні застосунки для iOS та Android і впроваджуємо технології, які дозволяють швидко реагувати на зміни. Ми працюємо за принципами Lean та Agile, цінуємо прозорість і відповідальність замість бюрократії.
 

У нас ти знайдеш атмосферу співпраці, де кожна ідея може вплинути на продукт, а результат роботи видно одразу. Ми хочемо, щоб команда відчувала справжню причетність до продукту — від першого рядка коду до відгуків користувачів.

Твоє поле дій:

• Забезпечувати Android та iOS додатки необхідними API, створюючи RESTful сервіси.
• Інтегрувати різні ключові системи та CRM через проміжний шар, використовуючи подієво-орієнтовану мікросервісну архітектуру та сучасні технології.
• Налагоджувати CI/CD процес для кожного мікросервісу.
• Співпрацювати з QA-інженерами у написанні unit- та інтеграційних тестів.
• Розробляти інструменти для моніторингу якості застосунків.
• Брати участь у різних активностях Scrum.
• Підтримувати своїх колег та допомагати команді.

Навички, які тобі знадобляться:

• 4+ роки досвіду у розробці застосунків з використанням Java та Spring.
• Знання оркестрації контейнерів (Kubernetes, Docker Swarm).
• Розуміння принципів clean code та clean architecture.
• Досвід побудови мікросервісної архітектури.
• Знання реляційних і нереляційних баз даних.
• Досвід роботи з PostgreSQL, SQL, Hibernate.
• Розуміння підходу cloud-native та принципів 12-factor apps.
• Знайомство з TDD/BDD та написанням unit-, інтеграційних і performance-тестів.
• Інженерне мислення, орієнтоване на продукт, і вміння працювати в команді.
• Досвід роботи з Kafka або RabbitMQ.

Що додасть магії:

• Досвід роботи з Quarkus, Smallrye, Microprofile.
• Досвід роботи з хмарними платформами.
• Досвід у фінтех-індустрії.

Як ми піклуємось:

• Тісно співпрацюємо зі стейкхолдерами та клієнтами.
• Працюємо у фіче-командах із різноманітним стеком технологій.
• Дотримуємось Agile-підходів: мінімум бюрократії, максимум прозорості.
• Маємо сильну підтримку від головного офісу та технічної команди.
• Пропонуємо конкурентну зарплату, прив’язану до курсу НБУ (USD).
• Гарантуємо довгострокове працевлаштування, оплачувану відпустку та лікарняні.

YASNO – бренд енергопостачальних компаній України, що забезпечують електроенергією, газом та енергоефективними рішеннями 2,5 млн сімей і понад 64 тис бізнесів.
Ми бачимо український енергоринок як активного учасника, що може створювати цінність, тому формуємо екосистему продуктів для енергонезалежності, ефективності та стійкості бізнесу.
Наша мета – розвивати рішення, які підтримують економіку та наближають країну до енергетичної незалежності, забезпечуючи українцям світло сьогодні й можливості для розвитку завтра.

Java Developer

Ключові навички:

• Досвід роботи від 5-х років на аналогічній посаді;
• Досвід роботи з Java Core, Java EE та/або Spring Framework;
• Відмінні знання сервісної, multy-tier та client-server архитектур;
• Досвід в роботі з великими JSON та XML файлами;
• Знання реляційних БД (Oracle/Azure SQL/PostgreSQL або інщі), навички написання складних SQL запитів;
• Практичний досвід роботи з async programming;
• Досвід роботи з ELK або Grafana та навички troubleshooting;
• Досвід написання Unit- та Functional-тестів;
• Досвід роботи з Jira, Confluence, Azure DevOps або подібними інструментами;
• Знання JavaScript буде плюсом.

Твоїми задачами будуть:

• Реалізація беклогу з розробки білінгової системи та її надбудов;
• Розробка інтеграцій з існуючими системами компанії;
• Проектування та реалізація архітектури;
• Забезпечення безпеки додатків використовуючи автуальні техніки, технології та методології написання коду;
• Автоматизація процесів;
• Написання та актуалізація Unit- та Functional-тестів;
• Аналіз проектної документації для повного розуміння вимог бізнесу та технічних вимог;
• Ведення документації про продукт;
• Пошук проблем за допомогою аналізу логів ті інших доступних методів.

Ми цінуємо в кандидатах:

• Відмінні навички вирішення проблем;
• Добре розвинені аналітичні здібності;
• Відповідальність;
• Вміння працювати в команді на спільний результат.

На тебе чекає:

• Команда професіоналів;
• Цікаві проєкти;
• Професійний розвиток та можливість кар’єрного зростання;
• Навчання та командоутворюючі заходи; 
• Психологічна та юридична підтримка;
• Подарунки на знакові та важливі події; 
• Сучасний офіс в UNIT.City, безкоштовний паркінг та шатл від найближчих станцій метро; 
• І звісно: офіційне працевлаштування, конкурентний рівень оплати (завжди вчасна та прозора винагорода), медичне страхування.

Якщо твій досвід є релевантним, ми з тобою зв’яжемось.

Основні вимоги

• Досвід проєктування мікросервісної та Event-Driven архітектури
• Експертне володіння Spring Stack (Boot, MVC, Security) та інструментами Maven/Gradle
• Глибокі знання багатопоточності (concurrency), асинхронного та реактивного програмування (Project Reactor, RxJava)
• Досвід роботи з SQL/NoSQL базами даних (PostgreSQL, MySQL, Redis тощо)
• Практичні навички роботи з векторними БД (Pinecone, Qdrant, Weaviate)
• Розуміння RAG-архітектури, роботи з embeddings та семантичним пошуком
• Досвід інтеграції з AI API (OpenAI, AWS Bedrock, Gemini тощо)
• Впевнена робота з менеджерами черг (Apache Kafka, RabbitMQ)
• Навички роботи з хмарами (AWS/GCP/Azure) та контейнеризацією (Docker, Kubernetes)
• Досвід налаштування CI/CD (Jenkins, GitLab CI) та моніторингу (Prometheus, Grafana, ELK)
• Розуміння фундаментальних структур даних та алгоритмів

Основні обов'язки

• Розробка, тестування та налагодження ПЗ згідно з технічними завданнями
• Проєктування архітектури систем та вибір оптимального технологічного стеку
• Модернізація існуючих банківських сервісів та їх інтеграція з новими рішеннями
• Технічний супровід впроваджених продуктів та ведення актуальної документації
• Проведення первинного (unit) тестування перед передачею до QA/BA
• Аналіз причин збоїв, їх усунення та налаштування систем моніторингу (observability)
• Постійне вивчення нових підходів у Java-розробці та сфері веб технологій

Своїм співробітникам ми пропонуємо

• Роботу в найбільшому та інноваційному банку України
• Офіційне працевлаштування та 24+4 календарних дні відпустки
• Компенсацію лікарняних
• Конкурентну заробітну плату
• Бонуси, премія відповідно до політики компанії
• Медичне страхування 
• Корпоративне навчання
• Можливість віддаленого формату роботи
• Корпоративну фінансову допомогу у критичних ситуаціях

We are helping our partner — a fast-growing product company in the iGaming space — find a Middle Java Developer to join their backend team.

This is a product environment where backend engineering directly impacts platform stability, scalability, and business growth.

You won’t just “close tickets.” You’ll work on real systems, real architecture, and real technical challenges.

What this role is really about

You’ll be working on a high-load platform where:

• systems process real-time events;
• performance and reliability matter daily;
• backend services must scale under heavy load;
• technical decisions affect the whole product ecosystem.

The team builds and develops services end-to-end, with a strong engineering mindset and ownership culture.

What you’ll be doing

• Develop and improve backend services.
• Work with microservices architecture.
• Participate in technical discussions and solution design.
• Solve performance and scalability challenges.
• Collaborate closely with developers, QA, and product teams.
• Support and improve existing services while building new functionality.
• Take ownership of your work and engineering decisions.

What we’re looking for

• 3+ years of commercial experience with Java.
• Strong practical experience with:

  • Spring Boot;
  • PostgreSQL;
  • Kafka or similar messaging systems.

• Experience working with microservices.
• Good understanding of distributed systems principles.
• Experience with SQL and NoSQL databases.
• Experience with AWS or Kubernetes will be a plus.
• gRPC — nice to have.

But more importantly:

• You think beyond tasks.
• You can explain your technical decisions.
• You are proactive and structured in your work.
• You care about quality, not only delivery speed.

What you get

• Product company environment (not outsourcing).
• Real impact on the product and technical decisions.
• Strong engineering team and mature processes.
• Complex backend challenges and high-load systems.
• Remote work format.
• Fast-growing iGaming product with global scale opportunities.

We are helping our partner — a fast-growing product company in the iGaming space — find a Senior Java Developer to join their backend team.

This is not a “just write code” role.

This is about building systems, making decisions, and owning the result.

What this role is really about

You’ll be working on a high-load casino product, where:

• systems process real-time events
• performance matters
• architecture decisions have real impact

The team builds services from scratch and owns them end-to-end.

What you’ll be doing

• Build new backend services from scratch
• Participate in architectural and technical decisions
• Work with microservices and distributed systems
• Solve complex technical challenges
• Collaborate in a cross-functional team (product / QA / dev)
• Take ownership of what you build — not just tasks

What we’re looking for

• 5+ years of experience with Java
• Strong experience with microservices architecture (2+ years)
• Deep understanding of distributed systems
• Hands-on experience with:
  • Spring Boot
  • PostgreSQL
  • Kafka (or similar messaging systems)
  • SQL + NoSQL databases
• Experience with AWS / Kubernetes will be a strong plus
• gRPC — nice to have

But more importantly:

You think, not just code

You take ownership

You can explain your decisions

What you get

• Product company (not outsourcing)
• Real impact on architecture and product
• Strong engineering team
• Fast-paced environment with real challenges
• Remote work

The company is is an e-trading technology company, providing connectivity and automated workflow solutions for banks and asset managers operating in the Fixed Income and Derivatives markets. 

Location: Remote First; office location in London (flexible remote working locations within Europe)

Working Hours: Full time (UK 9-6)

IMPORTANT: The company is looking for people who built libraries/frameworks from scratch, building SDKs, working on low level components, tangibles, performance optimizations, etc. Open source contributions are relevant.

The company is focused on extreme programming. They are a core engineering focus company, they don’t use any frameworks. They use very few external libraries. E.g. people working on compilers, SDKs, Principal Engineers who built functions from scratch. TDD is important. People who actively practiced TDD tend to do better in their interview process.

You will work within a small team where you will pair-program (we operate using the extreme programming framework) to:

• Build resilient and adaptable fintech platforms and components in Java
• Refactor to improve code design
• Write lots of tests (every one of our commits is continuously and rapidly verified by thousands of tests)

• Automate the boring bits

   

Features of the way we work:

• We avoid silos by regularly rotating between teams to work on the whole system with an Our Code not My Code mindset and approach
• We practice trunk-based development and continuous integration: we treat every commit as releasable
• We treat broken tests as failures and revert where possible
• We practice TDD, BDD and DDD
• We automate as much as possible
• We pair program to ensure that everyone understands the context of what they are working on. We also believe that pairing drives quality, learning, cross-skilling, and builds empathy with other developers

• Sometimes we have to care about throughput and latency and so take this into account when writing code

   

Salary: dependent on experience up to £130,000 + Shares + Benefits

About the Role

We are looking for a Senior Software Engineer to join a growing engineering team responsible for maintaining and evolving mission-critical backend systems operating at scale.

This role combines software development, operational excellence, and system reliability. You will work on distributed backend services, troubleshoot production issues, improve system resilience, and contribute to the continuous enhancement of cloud-native infrastructure.

The ideal candidate is a hands-on backend engineer who enjoys solving complex technical challenges, working across multiple systems, and taking ownership of production environments.
 

Responsibilities

• Design, develop, and maintain scalable backend services using Java.
• Collaborate with cross-functional teams to deliver high-quality software solutions.
• Investigate, troubleshoot, and resolve production issues affecting customers and internal systems.
• Analyze root causes and implement long-term solutions to improve system stability.
• Improve application security, reliability, and operational efficiency.
• Build automation and tooling to reduce manual operational effort.
• Contribute to infrastructure improvements and deployment processes.
• Work with cloud-native technologies and distributed systems.
• Participate in on-call rotations and support critical production environments.
• Develop internal documentation, operational procedures, and technical runbooks.
• Continuously improve observability, monitoring, and incident response processes.
   

Required Qualifications

• 5+ years of experience in backend software engineering.
• Strong Java development experience.
• Solid experience with Spring Framework and related technologies.
• Experience designing and supporting distributed systems.
• Hands-on experience with cloud platforms (AWS preferred).
• Experience with containerized environments and Kubernetes.
• Familiarity with messaging technologies such as Kafka.
• Experience troubleshooting production systems and resolving complex incidents.
• Understanding of software security best practices.
• Strong problem-solving skills and ability to work independently.
• Excellent communication and collaboration skills.
   

Nice to Have

• Experience with Python for automation and tooling.
• Experience with Docker, Helm, and cloud-native deployment workflows.
• Familiarity with observability and monitoring tools.
• Experience with CI/CD pipelines.
• Knowledge of networking concepts, proxies, and load balancing technologies.
   

Technology Stack

• Java
• Spring Framework
• Python
• AWS
• Kubernetes
• Docker
• Kafka
• PostgreSQL
• Grafana
• GitHub Actions
   

Benefits

• A competitive salary and flexible compensation package
• Professional development tools (mentorship program, tech talks and trainings)
• Medical insurance
• Free corporate English classes and speaking clubs with a native speaker

Our Customer:

Our client is a fast-growing tech company that builds innovative web solutions. They are looking for a talented Backend Developer to design and deliver impactful features, contribute to new services, and help advance their platform. The team values collaboration, learning, and continuous innovation.
 

Your Tasks:

• Collaborate closely with the founding team and product managers.
• Ensure service availability and take part in on-call rotations.
• Drive innovation, continuously learn, and share knowledge with the team.

Required Experience and Skills:

• At least 5+ years of experience in server-side Java development.
• Strong hands-on experience with relational databases and SQL.
• Experience building and working with RESTful web services and APIs.
• Familiarity with Linux-based systems.
• Experience working in an Agile software development environment.
• Ability to write clean, reusable code, prioritizing readability over complexity.
• Self-driven and results-oriented, able to take ownership of tasks and see them through to completion.
• Comfortable working in a fast-paced environment.
• BSc in Computer Science or equivalent practical experience.
• English proficiency at Upper-Intermediate level or higher.

Would Be a Plus:

• Experience designing and implementing microservices architectures.
• Experience scaling applications and building highly available systems.
• Experience with caching solutions such as Memcached, Redis, or similar technologies.
• Experience with messaging systems such as RabbitMQ or equivalent.
• Experience with non-blocking and reactive web frameworks such as RxJava or Spring WebFlux.
• Experience with distributed streaming and processing platforms such as Kafka or Spark.
• Experience with parser generators such as ANTLR, JavaCC, or similar tools.

We are looking for a Senior DevOps / Backend Engineer (Java) to join our client's team on an outstaff basis.

Client: USA
Format: Full-time
Duration: 3+ months

Requirements:

• 4+ years of commercial experience
• Upper-Intermediate English (B2+) or higher
• Strong experience with AWS services: EC2, RDS, S3, ECS, Lambda, CloudFront
• Hands-on experience with Terraform
• Solid knowledge of Java and Spring Boot
• Experience with cloud infrastructure, deployment automation, and CI/CD pipelines
• Ability to work independently and communicate effectively within a distributed team

If you're interested, send us your CV, and we'll share more details about the project.

We are looking for an experienced Senior Full Stack Engineer with Java, Python and React experience to join our development team and contribute to the development of a customized AI-driven platform.

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:

• Hand-On full stack development of innovative applications.
• Owning the entire development cycle, including design, architecture, development, and DevOps.
• Working in Extreme Programming methodology with remote pairing.

Requirements:

• BSc in Software Engineering or BS degree in Computer Science.
• 6+ years of experience in the following technologies: Java (must have), Spring.
• 2+ years of experience with Python (must have).
• 2+ years of experience in FE, mainly React (must have), and other modern JavaScript Framework/libraries.
• Experience with LLMs/AI/Prompt Engineering/MCP.
• Experience with Claude.code
• Experience with Data Analytics – big advantage.
• Experience in development in Kotlin – big advantage.
• Experience with Functional Programming and Java Streams.
• 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
• 3+ years of experience in micro-services-based architecture and tools (Spring Boot/Cloud)
• Experience in DevOps development and Jenkins.
• 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 priorities and plan complex work in a rapidly changing environment.
• Versatility and 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.

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
- Strong experience with Payment orchestration at specialized platforms or large E-commerce products

- Experience with Java 5+ years
- Experience with vault and network (Visa, MC) card data tokenization
- Experience with integrating PSPs (Stripe, Adyen, Venmo, etc.)
- English B2

Advantage
- Experience working on payment orchestration platforms

- Experience developing payment orchestration functionality from scratch

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

Job Title: Senior Backend Java Developer (IB / Partner Platform)
Company: VCG Tech Limited
Location: Remote
Employment Type: Full-Time

Role Purpose

This role owns the backend services behind our introducing-broker and partner program: partner onboarding, multi-level partner commission and rebate logic, and the reporting that partners rely on to understand their earnings. These services sit at the intersection of trading activity and partner payouts, so getting them right matters commercially and to the trust partners place in the program. You will design, build and operate Java microservices that must be accurate, reliable and maintainable on a live financial platform.

Day to day you will write and review clean, well-tested code, design sound APIs, and integrate with the trading platform and other backend services through REST and event-driven messaging. You will work in a focused, remote product team, collaborating closely with fellow engineers, product and QA, and sharing responsibility for the reliability of what you ship. As a senior individual contributor you will set a high bar in code review, mentor through example, and report into the team's engineering lead.

Key Responsibilities

Build and Own Partner Platform Services

• Design, build and maintain Java microservices for partner onboarding, commission/rebate processing and reporting
• Translate partner-program requirements into well-structured, testable services with clear ownership boundaries
• Design clean, versioned REST APIs and stable contracts that other teams can depend on
• Model and evolve relational data to keep partner and reward records accurate and auditable
• Take features from design through implementation, release and operation in production

Integrate Across the Platform

• Integrate with the MetaTrader 5 trading platform to source the trading activity that drives partner rewards
• Build resilient integrations with other backend services across onboarding, payments and reporting
• Design event-driven flows using messaging to keep data consistent across service boundaries
• Handle failure modes, retries and idempotency so financial calculations stay correct under real conditions

Reliability on a Live Financial System

• Treat correctness as a first-class requirement so commission and rebate outcomes are accurate and reproducible
• Instrument services with logging, metrics and alerting to detect and diagnose issues quickly
• Contribute to on-call readiness, incident response and post-incident improvements
• Identify and address performance, scalability and data-consistency risks before they reach production

Engineering Quality and Collaboration

• Write clean, well-tested code with meaningful unit and integration coverage
• Provide thorough, constructive code review and help raise standards across the team
• Maintain and improve CI/CD pipelines for fast, safe and repeatable releases
• Document key decisions, APIs and operational runbooks so the team can move quickly

Required Experience & Skills

• 5+ years of professional backend development in Java, including senior-level ownership of production services
• Deep, hands-on experience with Spring Boot and building microservices
• Strong API design skills and practical experience with REST
• Solid command of SQL and relational database design, including data modelling and query performance
• Experience with messaging and event-driven architectures, including delivery guarantees and idempotency
• Proven track record building and operating reliable services where correctness and data integrity matter
• Hands-on experience deploying and running services on AWS
• Proficiency with Docker and container-based workflows
• Strong testing discipline across unit and integration levels, with CI/CD and Git in everyday use
• Clear communicator who collaborates well asynchronously in a remote team and gives effective code review

Nice to Have

• Experience in trading, brokerage or fintech, especially CFDs/FX
• Familiarity with the MetaTrader 5 platform and its data model
• Experience building partner, affiliate, referral or commission/rebate systems
• Exposure to Kubernetes for orchestrating containerised services
• Experience with observability tooling such as Grafana, Prometheus or CloudWatch
• Familiarity with infrastructure-as-code using Terraform
• Experience working with payments flows such as deposits and withdrawals
• Comfort working with Jira and Confluence in a product-team setting