Jobs Java

• We are developing a platform that receives securities and price data from multiple providers, enriches and validates it, and distributes the consolidated data to internal bank systems. Our team manages various web and desktop applications, web services, and Linux environments that enable visualization of securities and execution of related workflows.
  
  Our components are built using Java 8-11, JavaScript/TypeScript, Oracle, and Spring 4-5, including Spring Boot.

   

• Responsibilities:

  - Develop back-end systems using Java with well-tested code.
  - Support the development environment, primarily through automation using Jenkins CI and Bash.
  - Evaluate and implement new development tools, libraries, and methodologies to enhance quality.
  - Conduct peer code reviews for changes in the project codebase.
  - Collaborate effectively with a global team across multiple time zones, demonstrating strong verbal and written communication skills.
  - Provide constructive suggestions and alternative solutions to team members to identify the most efficient and optimized approaches.

   

• Mandatory Skills Description:

  The role requires extensive expertise in Java SE and Java EE with over a decade of professional experience, emphasizing strong proficiency in the Spring framework, including Boot, IoC, MVC, AOP, Security, Data, JDBC, and testing components. The candidate must be skilled in SQL and relational databases, specifically Oracle, and have a solid understanding of Servlets, servlet containers such as Tomcat, and application servers like Weblogic. Familiarity with CI/CD processes and tools, notably TeamCity and Jenkins, is also essential.
  
  Hard skills include:
  - Advanced Java SE and Java EE development
  - Comprehensive Spring framework application
  - SQL query writing and database management using Oracle
  - Knowledge of Servlets, Tomcat, and Weblogic server environments
  - Experience with CI/CD pipelines using TeamCity and Jenkins
  - Practical Linux system navigation, file and permission management, user and group administration, process and service handling, security keys and certificates, and basic Bash scripting
  
  Soft skills focus on:
  - Analytical problem-solving to identify and implement effective, maintainable solutions
  - Collaborative discussion and consensus-building within the team to select optimal approaches

   

• Nice-to-Have Skills Description:

  - Proficiency in Angular or similar frameworks (React, Vue), including Angular Material and RxJs, demonstrating capability in modern front-end development.
  - Ability to design and implement visually appealing and functional HTML/CSS layouts.
  - Strong expertise in Oracle database management and operations.
  - Familiarity with ELK stack for logging, monitoring, and data analysis.
  - Experience working with Spring Cloud modules and developing microservice architectures.

   

• Languages:
  • English: B2 Upper Intermediate

• Project Description:

  We are developing a platform that receives securities and price data from multiple providers, enriches and validates it, and distributes the consolidated data to internal bank systems. Our team manages various web and desktop applications, web services, and Linux environments that enable visualization of securities and execution of related workflows.
  
  Our components are built using Java 8-11, JavaScript/TypeScript, Oracle, and Spring 4-5, including Spring Boot.

• Responsibilities:

  - Develop back-end systems using Java with well-tested code.
  - Support the development environment, primarily through automation using Jenkins CI and Bash.
  - Evaluate and implement new development tools, libraries, and methodologies to enhance quality.
  - Conduct peer code reviews for changes in the project codebase.
  - Collaborate effectively with a global team across multiple time zones, demonstrating strong verbal and written communication skills.
  - Provide constructive suggestions and alternative solutions to team members to identify the most efficient and optimized approaches.

• Mandatory Skills Description:

  The role requires extensive expertise in Java SE and Java EE with over a decade of professional experience, emphasizing strong proficiency in the Spring framework, including Boot, IoC, MVC, AOP, Security, Data, JDBC, and testing components. The candidate must be skilled in SQL and relational databases, specifically Oracle, and have a solid understanding of Servlets, servlet containers such as Tomcat, and application servers like Weblogic. Familiarity with CI/CD processes and tools, notably TeamCity and Jenkins, is also essential.
  
  Hard skills include:
  - Advanced Java SE and Java EE development
  - Comprehensive Spring framework application
  - SQL query writing and database management using Oracle
  - Knowledge of Servlets, Tomcat, and Weblogic server environments
  - Experience with CI/CD pipelines using TeamCity and Jenkins
  - Practical Linux system navigation, file and permission management, user and group administration, process and service handling, security keys and certificates, and basic Bash scripting
  
  Soft skills focus on:
  - Analytical problem-solving to identify and implement effective, maintainable solutions
  - Collaborative discussion and consensus-building within the team to select optimal approaches

• Nice-to-Have Skills Description:

  - Proficiency in Angular or similar frameworks (React, Vue), including Angular Material and RxJs, demonstrating capability in modern front-end development.
  - Ability to design and implement visually appealing and functional HTML/CSS layouts.
  - Strong expertise in Oracle database management and operations.
  - Familiarity with ELK stack for logging, monitoring, and data analysis.
  - Experience working with Spring Cloud modules and developing microservice architectures.

• Languages:
  • English: B2 Upper Intermediate

• A next-generation cross-asset data management platform to provide globally consistent data and innovative tools to support business strategy for trade/sales clients that 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: Apache Spark, Hive, Java, Scala, Spring, SQL, Kafka, Hadoop.
  
  We are looking for a strong Senior Java Developer with Big Data experience (Hadoop, Spark) capable of build the design and establish the framework in order to expose and distribute the Risk data to wide variety of consumers including Finance, Front office Risk Systems, Trading Systems, Back office and Account systems. This should cover low latency access and Streaming, Push / Pull mechanisms depending on the type of consumers.
  
  The role of the Senior Java Developer involves working with strong development teams (3 Senior Java Developers), the opportunity to work with big data improving knowledge in this domain 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

• Mandatory Skills Description:

  • At least 7 years of experience in software development, including professional backend software development experience;
  • Strong Knowledge of the Java programming languages
  • Understanding Java dependency injection frameworks, preferably Spring
  • Strong SQL skills
  • 2+ year of Big data development with extensive hands-on experience with Spark programming
  • Strong knowledge of big data technologies like Hadoop (Hive) and Spark
  • Understanding Data governance
  • Should be familiar with algorithms and design patterns
  • Understanding of distributed systems.
  • Understanding of CI/CD workflow.
  • Familiarity with the Linux environment, including scripting skills

   

• Nice-to-Have Skills Description:

  • Databricks and cloud services, preferably aws/gcp
  • Experience with in-memory databases and caching
  • Data modeling: fact, dimension tables, SCD
  • Understanding of open table formats: iceberg, delta lake, hudi
  • Understanding of open file formats: parquet, orc
  • Job Orchestration tools like Autosys or Airflow
  • Financial background (where possible)

   

• Languages:
  • English: B2 Upper Intermediate

Our client is one of the leading companies on the market which provides Big Data, Data Integration, Data Preparation and Enterprise Application Integration software and services. Its products allow to build data integration process, migrate data safely, process big amount of data, cleanse data and check its quality.

Connector (aka Component) is a core element of the products, which allows to connect, extract data from a data source, transform data according to business needs and load data back to some storage. It is used in traditional software such as Studio for Data Integration as well as in the modern Cloud services.

Continuous emerging of new technologies and data repositories lead to demand growth of creating new connectors and adapting the existing ones.

For this reason, we are looking for a Junior Java developer to join the team to address the demand and provide our client with the best quality service.
 

Requirements:

• Good knowledge of Java Core 8
• Some experience with SQL (knowledge of JDBC is a huge plus)
• Understanding and some experience in testing techniques (JUnit)
• English (both spoken and written) at least at Intermediate level that allows communicating with an international team on a daily basis

 Optional but desirable:

• Pet projects on Java Core
• Knowledge of JSON, XML
• Knowledge or experience with development and CI tools: Git/GitHub, Maven, Docker

Job responsibilities:

• Design and implement Talend Connectors
• Unit and Integration testing
• Respond to feature requests, bug reports, performance issues and ad-hoc questions

Advantages:

• Smooth onboarding process
• Working under the supervision of a skilled teammate
• Chance to work with a great variety of technologies and DBs (both SQL and non-SQL such as Snowflake, PostgreSQL, Mongo, Cassandra, DynamoDB, Neo4j)
• Work collaboratively in a distributed international team (France, Germany, China)

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 that 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: Apache Spark, Hive, Java, Scala, Spring, SQL, Kafka, Hadoop.

We are looking for a strong Senior Java Developer with Big Data experience (Hadoop, Spark) capable of build the design and establish the framework in order to expose and distribute the Risk data to wide variety of consumers including Finance, Front office Risk Systems, Trading Systems, Back office and Account systems. This should cover low latency access and Streaming, Push / Pull mechanisms depending on the type of consumers.

The role of the Senior Java Developer involves working with strong development teams (3 Senior Java Developers), the opportunity to work with big data improving knowledge in this domain 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

Mandatory Skills Description:

• At least 5 years of experience in software development, including professional backend software development experience;
• Strong Knowledge of Java programming languages
• 1+ year of Big data development with extensive hands-on experience with Spark programming
• Strong knowledge of big data technologies like Hadoop (Hive) and Spark
• Should be familiar with algorithms and design patterns
• Understanding of distributed systems.
• Understanding of CI/CD workflow.
• Familiarity with Linux environment including scripting skills

Nice-to-Have Skills Description:

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

Languages:

English: B2 Upper Intermediate

Please provide your CV and LinkedIn profile. We demand your LinkedIn profile with actual working experience to move forward with your application!

Fundomate is looking for a Senior Java Back-End Developer to join our team. Fundomate is an innovative fintech company operating in the alternative lending space and providing both direct-to-business and white-label turnkey solutions.

You will be good match if:

- You have history of solving non trivial problems in one of your previous projects

- You have wide technology background (backend, frontend, devops, ops, mobile development, etc), so you will understand the connections between technologies and expand this knowledge with domain and business needs. 

- You have experience working in US fintech domain 

We will be good match if:

- You want to solve (or learn to solve) complex business problems

- You want to experiment with processes/development technics/tools

- You are interested in continuous improvement and automation of product and working process

Requirements:

- 6+ years of experience developing web applications

- 3+ years of experience in any IoC & DI framework (Spring, Quarkus, Micronaut, etc.)

- TDD experience in production is a must have

- Experienced in pair programming

- Good knowledge of MicroServices (Kubernetes knowledge is a plus)

- Experience working with tools like Git, Gradle, Jenkins or similar CI/CD

- Working experience in Industry Standard protocols related API Security including OAuth (KeyCloak is a plus)

- Working experience with RDBMs like Postgres/MySQL or any similar

- Understanding of asynchronous message-based communication like Kafka, GCP Pub/Sub, AWS SNS/SQS, etc. (Kafka as an advantage)

- Strong Agile/Scrum/Kanban development experience

- Experience in third party systems integration (XML or JSON api)

- Knowledge of any cloud provider (AWS as an advantage)

Our technical Stack:

- Java 25

- Microservices (Quarkus)

- Postgresql/MySQL

- Kafka

- Keycloak

- Kubernetes & Docker

- AWS (EKS, MSK, RDS, etc.)

- Gradle

- Bitbucket pipelines, gitops approach

- Lombok, MapStruct, Flyway

We offer:

- Innovative product with modern technology stack

- Competitive salary (paid in $)

- Social package (paid vacations, sick leaves and etc)

- PE accounting and support

- WFH and remote working mode possibility, Ukrainian working hours

- No bureaucracy, micromanagement and time-tracking

We are looking for a Senior Backend Engineer (Java) for our partner, a growing software company based in Spain.

Our partner combines product development with client-facing engineering work. They build their own products in the search and AI space while also delivering software solutions for enterprise customers. As part of an international engineering team, you will work on the backend of a live production platform used by real customers and play a key role in the evolution of its architecture.

This is a full-time remote contract position with an initial commitment of at least six months and the possibility of long-term extension.

Responsibilities

* Design, develop, and maintain backend services and APIs using Java and Spring Boot.

* Participate in a major platform migration toward a more secure and modern architecture.

* Contribute to architectural and technical design decisions.

* Transform business requirements into scalable technical solutions.

* Improve and refactor existing systems while maintaining production stability.

* Collaborate closely with QA and cross-functional teams throughout the development lifecycle.

* Participate in Agile ceremonies and planning activities.

* Utilize AI-assisted development tools where they provide measurable value.

Requirements

Technical Skills

* 5+ years of professional software engineering experience.

* Strong hands-on experience with Java and Spring Boot.

* Proven experience building and maintaining production-grade APIs and backend systems.

* Solid understanding of software architecture, system design, and data modeling.

* Experience working on live products with real production workloads.

* Practical experience using AI coding assistants and developer productivity tools.

Communication

* English level B2 or higher.

* Ability to communicate technical concepts clearly to both technical and non-technical stakeholders.

* Strong written communication and documentation skills.

* Comfortable working within distributed international teams.

Personal Qualities

* Strong ownership mentality and proactive approach.

* Ability to identify issues early and drive solutions independently.

* Open-minded and adaptable when evaluating technologies and approaches.

* Focus on code quality, maintainability, and long-term sustainability.

* Collaborative attitude and strong teamwork skills.

Engagement Details

* Fully remote.

* Full-time contract position.

* Initial engagement of at least 6 months.

* Potential extension based on project needs and performance.

If you are interested, please send your CV and we will be happy to provide additional information about the project and interview process.

• 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

The full production cycle IT company Nabuto specializes in the development of software products/services in the field of information technologies.

We operate in the FinTech/trading domain, running a data-intensive platform that processes millions of real-time events. The environment is low-latency, high-load and engineered for continuous availability.

We’re building a high-performance cryptocurrency trading platform and looking for a Strong Middle Java Engineer to help us develop and scale the core backend systems powering real-time trading operations.
You’ll work on latency-sensitive, high-throughput services responsible for processing large volumes of market and trading events in real time. The role requires solid backend engineering fundamentals, attention to performance and reliability, and the ability to work comfortably in distributed systems with demanding uptime requirements.
You’ll be involved in designing and developing microservices, improving system scalability, optimizing data flows, and contributing to the platform’s overall stability. We value engineers who write clean, maintainable code, take ownership of their work, and can operate effectively in a fast-moving engineering environment.
Our stack is heavily focused on Java and modern backend technologies, running in a cloud-native infrastructure with Kubernetes and event-driven architecture patterns.

Responsibilities
• Development and design of a semi-crical microservices.

Requirements
• 5 years of experience as a Java Engineer.
• Experience with Java 18+.
• Computer science fundamentals (algorithms and data structures).
• Spring Boot/Hibernate applications development.
• SQL knowledge.
• Experience with message brokers.
• Leveraging of AI coding assistants (Claude Code, Codex, Amazon Kiro) as part of the daily engineering workflow.
• It would be great to have a hands-on experience with the Hazelcast platform.
• Master’s degree focused on Computer Science or a similar specialization.

Nice to Have
• Experience working with high-load or real-time systems.
• Streaming Technologies (Apache Flink, Hazelcast Platform).
• AWS Cloud.
• Distributed systems fundamentals.
• Kubernetes Fundamentals.

What We Offer
• Work-Life Balance — 24 days of paid vacation + 30 days of paid sick leave.
• Care from Day One — medical insurance from your first day, including dental care, massage, and professional psychological support.
• Knowledge Library — office books and access to the Kuka online library.
• Investment in Your Energy — partial reimbursement for sports and fitness activities.
• Growth & Learning — coverage for English or Ukrainian language courses and a dedicated professional development budget.
• Island Relaxation — up to 14 days per year at the company villa in Cyprus.

Join the Nabuto team, where your talents and aspirations will be recognized!

We offer a dynamic work environment, opportunities for professional growth, and support at every step of your career path. Start your journey to success with us—apply today and take the first step towards your bright future!

Nabuto is an equal opportunity employer. We encourage applications from candidates of all backgrounds and experiences. 

Please note, that only shortlisted candidates will be contacted. Thank you for considering Nabuto as your next career move!

Project Description:

For the world most global bank we are building the platform, which supports various information gathering and processing across the organization and providing access to this data

Responsibilities:

Candidate will be responsible for building out the firm's strategic reference data platforms to serve businesses within client company. The successful applicant will take ownership of key projects and components and will be responsible for all phases of SDLC including analysis and design, development, testing and deployment. As a developer, the candidate will be responsible for developing & deploying technical solution following engineering excellence standards. A potential candidate will need to understand system and enterprise architecture concepts and will be expected to understand how all components fir together and impact one another. They will work with a global and diverse team of peers as well as liaise closely with Business Analyst, Production Support, and infrastructure teams.

Responsibilities:
- Deliver assigned development projects withing agreed schedule, quality and scope expectations
- Participate in all stages of SDLC within an agile Scrum environment
- Form partnership with technology vendors and gain deep understanding of products
- Enhance/Re-architect existing components to satisfy new requirements in terms of performance and scalability
- Provide level 3 (escalation) support for the application

Mandatory Skills Description:

- At least 6+ years of experience with Java
- Experience/understanding with the following technologies:
- Java (Core, JDBC, MT, Collections, I/O), Spring Boot
- SQL.PL-SQL on Oracle DB
- Container platform based on Kubernetes
- REST web services, Kafka, Redis
- Unix Commands and shell scripting.
- Familiarity with standard data structures and algorithms.
- Experience using the following tools - JIRA, Harness/uDeploy, SonarQube, TeamCity, Artifactory, Git (GHE & Bitbucket)
- Logical thinking, strong analytical and problem-solving skills; innovate and solutions oriented
- Effective time management skills to manage multiple priorities with flexibility on time zones and timelines
- Excellent verbal and written communication skills
- Bachelor's degree in computer science or equivalent work experience

Nice-to-Have Skills Description:

- Master's degree in computer science or equivalent work experience
- Experience working with the Scrum methodology
- Experience working with a NoSQL database
- Experience designing and implementing microservices
- Financial services technology experience preferably in reference data domain
- Physical and logical data modeling

Languages:

English: B2 Upper Intermediate

For the world most global bank we are building the platform, which supports various information gathering and processing across the organization and providing access to this data

Responsibilities:

Candidate will be responsible for building out the firm's strategic reference data platforms to serve businesses within client company. The successful applicant will take ownership of key projects and components and will be responsible for all phases of SDLC including analysis and design, development, testing and deployment. As a developer, the candidate will be responsible for developing & deploying technical solution following engineering excellence standards. A potential candidate will need to understand system and enterprise architecture concepts and will be expected to understand how all components fir together and impact one another. They will work with a global and diverse team of peers as well as liaise closely with Business Analyst, Production Support, and infrastructure teams.

- Deliver assigned development projects withing agreed schedule, quality and scope expectations
- Participate in all stages of SDLC within an agile Scrum environment
- Form partnership with technology vendors and gain deep understanding of products
- Enhance/Re-architect existing components to satisfy new requirements in terms of performance and scalability
- Provide level 3 (escalation) support for the application

Mandatory Skills:

- At least 6+ years of experience with Java
- Experience/understanding with the following technologies:
- Java (Core, JDBC, MT, Collections, I/O), Spring Boot
- SQL.PL-SQL on Oracle DB
- Container platform based on Kubernetes
- REST web services, Kafka, Redis
- Unix Commands and shell scripting.
- Familiarity with standard data structures and algorithms.
- Experience using the following tools - JIRA, Harness/uDeploy, SonarQube, TeamCity, Artifactory, Git (GHE & Bitbucket)
- Logical thinking, strong analytical and problem-solving skills; innovate and solutions oriented
- Effective time management skills to manage multiple priorities with flexibility on time zones and timelines
- Excellent verbal and written communication skills
- Bachelor's degree in computer science or equivalent work experience

Nice-to-Have Skills:

- Master's degree in computer science or equivalent work experience
- Experience working with the Scrum methodology
- Experience working with a NoSQL database
- Experience designing and implementing microservices
- Financial services technology experience preferably in reference data domain
- Physical and logical data modeling

• For the world most global bank we are building the platform, which supports various information gathering and processing across the organization and providing access to this data

   

• Responsibilities:

  Candidate will be responsible for building out the firm's strategic reference data platforms to serve businesses within client company. The successful applicant will take ownership of key projects and components and will be responsible for all phases of SDLC including analysis and design, development, testing and deployment. As a developer, the candidate will be responsible for developing & deploying technical solution following engineering excellence standards. A potential candidate will need to understand system and enterprise architecture concepts and will be expected to understand how all components fir together and impact one another. They will work with a global and diverse team of peers as well as liaise closely with Business Analyst, Production Support, and infrastructure teams.
  
  Responsibilities:
  - Deliver assigned development projects withing agreed schedule, quality and scope expectations
  - Participate in all stages of SDLC within an agile Scrum environment
  - Form partnership with technology vendors and gain deep understanding of products
  - Enhance/Re-architect existing components to satisfy new requirements in terms of performance and scalability
  - Provide level 3 (escalation) support for the application

   

• Mandatory Skills Description:

  - At least 6+ years of experience with Java
  - Experience/understanding with the following technologies:
  - Java (Core, JDBC, MT, Collections, I/O), Spring Boot
  - SQL.PL-SQL on Oracle DB
  - Container platform based on Kubernetes
  - REST web services, Kafka, Redis
  - Unix Commands and shell scripting.
  - Familiarity with standard data structures and algorithms.
  - Experience using the following tools - JIRA, Harness/uDeploy, SonarQube, TeamCity, Artifactory, Git (GHE & Bitbucket)
  - Logical thinking, strong analytical and problem-solving skills; innovate and solutions oriented
  - Effective time management skills to manage multiple priorities with flexibility on time zones and timelines
  - Excellent verbal and written communication skills
  - Bachelor's degree in computer science or equivalent work experience

   

• Nice-to-Have Skills Description:

  - Master's degree in computer science or equivalent work experience
  - Experience working with the Scrum methodology
  - Experience working with a NoSQL database
  - Experience designing and implementing microservices
  - Financial services technology experience preferably in reference data domain
  - Physical and logical data modeling

   

• Languages:
  • English: B2 Upper Intermediate

NovaCore is looking for a Java Backend Developer to join an upcoming FinTech project. We are looking for an engineer who can build secure backend services, design reliable APIs, and work with transaction-heavy distributed systems.

Project

The project is a FinTech platform that helps businesses manage customer accounts, payment transactions, refunds, settlements, and financial reporting. The backend consists of Java and Spring Boot services responsible for transaction processing, payment-provider integrations, authentication, audit logging, and fraud-prevention workflows. Asynchronous financial events are processed through message brokers, while PostgreSQL and Redis are used for persistent storage, caching, and transaction state management. The team is currently improving system reliability, introducing additional payment methods, and optimizing transaction processing under increased load.

Requirements

• 2+ years of commercial Java development experience.
• Strong knowledge of Java Core and modern Java versions.
• Practical experience with Spring Boot and Spring Framework.
• Experience designing and developing REST APIs.
• Good knowledge of Spring Data JPA and Hibernate.
• Experience with PostgreSQL, MySQL, or another relational database.
• Understanding of database transactions, isolation levels, and data consistency.
• Knowledge of OOP, SOLID principles, and common design patterns.
• Experience with Maven or Gradle.
• Experience with Git and collaborative development workflows.

• English level B1+.

   

Nice to have

• Experience in FinTech, banking, payment systems, or billing platforms.
• Knowledge of Spring Security, OAuth 2.0, and JWT.
• Experience with Kafka or RabbitMQ.
• Understanding of idempotency and distributed transaction patterns.
• Experience with Redis and distributed caching.
• Familiarity with microservice and event-driven architectures.
• Experience with Docker, Kubernetes, and CI/CD.
• Knowledge of AWS, Azure, or GCP.
• Experience with JUnit, Mockito, Testcontainers, and integration testing.

• Familiarity with PCI DSS or financial-data security practices.

   

Responsibilities

• Develop and maintain backend services using Java and Spring Boot.
• Implement payment, transaction, refund, and settlement workflows.
• Design secure and maintainable REST APIs.
• Integrate external payment gateways and financial providers.
• Develop asynchronous workflows using message brokers.
• Ensure consistency and idempotency of financial operations.
• Optimize database queries and backend performance.
• Write unit, integration, and API tests.
• Participate in code reviews and architecture discussions.
• Investigate production incidents and improve system reliability.
• Maintain technical documentation and communicate progress proactively.

Working conditions

• Format: Remote.
• Office attendance: Optional.
• Employment: Full-time or long-term contract.
• Schedule: Flexible working hours with agreed team availability.
• Cooperation type: Talent Pool / Upcoming Projects.
• Compensation: Based on technical level and interview results.
• Paid vacation and sick leave according to the cooperation agreement.
• Educational support and access to internal technical materials.

About NovaCore

NovaCore develops scalable digital products for FinTech, Healthcare, E-commerce, and enterprise clients. We focus on reliable architecture, secure engineering, transparent communication, and long-term product value. When a matching active project is not immediately available, applications are considered for upcoming opportunities through the NovaCore talent pool.

We are looking for an experienced Senior Backend Engineer to join our team on a full-time outstaff project. You will work on building and maintaining high-performance backend services, collaborating with an international team, and delivering scalable solutions using Java, C++, and Scala.

This is a white-label engagement where you'll be expected to take ownership of backend development, contribute to architectural decisions, and build reliable, production-ready software.

Core Competence:

• 5+ years of professional experience with Java in backend application development.
• 3+ years of hands-on experience with C++, building performant and reliable software.
• 2+ years of commercial experience with Scala in production environments.
• Strong understanding of object-oriented programming, software design principles, and clean code practices.
• Experience designing, developing, and maintaining scalable backend systems.
• Solid knowledge of RESTful APIs and backend service architecture.
• Experience working with relational databases and writing efficient SQL queries.
• Ability to troubleshoot, optimize, and improve existing backend applications.
• Strong problem-solving skills and ability to work independently with minimal supervision.
• Good communication skills and ability to collaborate effectively in an international team.

• English proficiency at a conversational level (B2 or higher).

   

Preferred Qualifications:

• Experience working with distributed systems or high-load applications.
• Familiarity with microservices architecture and event-driven systems.
• Experience with modern CI/CD pipelines and version control systems.
• Knowledge of containerization technologies such as Docker and Kubernetes.
• Experience with cloud platforms (AWS, Azure, or GCP).

• Understanding of Agile development methodologies and collaborative engineering practices.

   

What We Offer You:

• Challenging Projects: Work on large-scale backend systems with modern technologies.
• Technical Ownership: Contribute to architecture decisions and influence product development.
• International Team: Collaborate with experienced engineers in a global environment.
• Full-Time Engagement: Stable 40-hour work week on a long-term outstaff project.
• Remote Flexibility: Work remotely with a distributed engineering team.
• Professional Growth: Expand your expertise while working on complex backend solutions.

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. Green flags: Spark, Hive, Hadoop.
• 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)