Jobs Java

🚀 Who we are:

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

📍 About the Product:

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

Operating at global scale, the platform processes millions of events and terabytes of geospatial data daily, relies on cloud infrastructure and microservices, and integrates with upstream research prototypes from data science teams. 

About the Role:

As a Senior Java Engineer, you will own the end-to-end development of core data processing services within our maritime intelligence platform.
You will collaborate closely with data scientists, analysts and software engineers to design and implement scalable microservices and streaming solutions. Leveraging AWS, Spring Boot and Kafka, you’ll tackle technical challenges around high-throughput ingestion, low-latency processing and data integrity.

📍 Key Responsibilities:

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

📍 Required Competence and Skills:

• At least 6 years of professional experience as a Backend Engineer.
• Proficiency in Java and Spring Boot within a microservices architecture.
• Experience implementing and operating Kafka streaming solutions.
• Practical knowledge of AWS for data storage, processing and analytics.
• At least 6 month of production agentic AI experience (Claude Code or alternatives) utilizing MCP, custom .md files, and orchestrating subagent workflows.
• Strong problem-solving skills with attention to detail.
• Ability to work independently, challenge decisions and lead technical discussions.
• Excellent communication skills for cross-team collaboration.
• Bachelor’s degree in Computer Science, Engineering or a related field.

Nice to Have:

• Experience designing and building ETL processes for data transformation and integration.
• Familiarity with Apache Spark for large-scale data processing.
• Knowledge of Python or Node.js for supporting integration tasks.
• Prior work with maritime, geospatial, defense or logistics domains.

Why Us:

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

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

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

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

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

Skills

Must have

Strong knowledge of Big Data technologies Hadoop Ecosystem (HDFS, Impala, HIVE, HBASE, etc.) and Apache Spark

At least 5 years of experience in software development, including professional backend software development experience;

Strong Knowledge of Java programming languages

Should be familiar with algorithms and design patterns

Familiarity with Linux environment, including scripting skills

Designing and building APIs (Java);

Java Server-side or Back-end development;

Core Java;

Java collections and multithreading;

Java Memory Management;

Database and SQL (writing stored procedures, designing table schemas).

Understanding of distributed systems.

Understanding of CI/CD workflow.

Ability to multi-task and work under pressure.

Ability to pick up new concepts and apply the knowledge.

Demonstrated problem-solving skills.

Enthusiastic and proactive approach with a willingness to learn.

The candidate is expected to be dynamic and flexible with a high energy level as this is a demanding and rapidly changing environment

Nice to have

Experience In-memory databases and caching

Job Orchestration tools like Autosys or Airflow

Apache Spark

Financial background (where possible)

Languages

English: C1 Advanced

AsiaFinance Group is a fast-growing group of fintech companies operating in Asia. Our core business is digital consumer lending.

Position: Business Analyst 
Location: Remote (Global)
Reported to: Chief Product Officer

About the Role

As a Middle–Senior Java Developer, you will be responsible for designing, developing, and maintaining backend services that power our lending platforms and internal systems. You will work closely with product, engineering, and infrastructure teams to deliver high-quality software while contributing to architecture decisions, system reliability, and continuous improvement initiatives.

This role is ideal for an experienced developer who enjoys solving complex technical challenges, writing clean and maintainable code, and working in a remote, international environment.

What You'll Do

• Design, develop, and maintain backend applications and services using Java and Spring Framework.
• Build scalable, secure, and high-performance APIs and business services.
• Participate in system design, code reviews, and technical discussions.
• Write clean, maintainable, and well-tested code following software engineering best practices.
• Develop and maintain integrations with internal and external systems.
• Optimize application performance, database queries, and system reliability.
• Implement caching, monitoring, logging, and observability solutions.
• Support production deployments, troubleshooting, and incident resolution.
• Collaborate with Product Managers, QA Engineers, DevOps Engineers, and other developers throughout the software development lifecycle.
• Contribute to technical documentation, architecture improvements, and coding standards.
• Participate in Agile development processes, sprint planning, and retrospectives.
• Continuously improve code quality, development practices, and team efficiency.

What We're Looking For

• Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related field.
• Strong experience with Java 11+ and Spring Framework (Spring Boot, MVC, Data, Security).
• 4+ years of commercial Java development (Java 11+)
• OOP and SOLID principles — applied daily, not just understood theoretically
• Clean code and refactoring discipline — we improve the codebase, not just add to it
• TDD mindset: unit and integration tests are part of done, not an afterthought
• SQL and relational databases — writing, reviewing, optimising queries and schemas
• REST API integrations — consuming and exposing
• Caching strategies — Redis or equivalent, knowing when and why to apply them
• Data encryption basics — at rest and in transit
• Telemetry and observability — structured logs, metrics, basic alerting
• Git — branching, PR workflow, code review participation
• CI/CD basics — pipeline awareness, build and deploy cycle familiarity
• JVM fundamentals — threading model, memory management basics
• Linux comfort — reading logs, basic shell, deployment tasks

Nice to Have

• Experience with AWS services such as EC2, RDS, S3, and load-balanced environments.
• Familiarity with message brokers, distributed systems, and microservices architecture.
• Experience with monitoring and observability tools such as Grafana, Kibana, or similar platforms.
• Previous experience in fintech, financial services, or high-availability production systems.
• Experience working in distributed international teams.

Why Join Us

• International team with a flat, Western-style corporate culture
• Real ownership across the full BA and QA lifecycle from day one
• Fast career progression in a high-growth, cross-border fintech environment
• Collaborative, energetic team with frequent cross-functional interaction

Want to work on technologies used by data platforms at a global scale?

We’re looking for Senior and Middle+ Java Engineers to join a long-term cloud data infrastructure project focused on modern Data Lakehouse technologies, distributed systems, and open-source development.

You’ll be building integrations between data processing frameworks and cloud services, improving compatibility across the ecosystem, and contributing to technologies that power large-scale analytics platforms. If you enjoy solving complex backend challenges and working close to the open-source community, this role is for you.

What you’ll be working on

• Develop new features for large-scale data infrastructure components.
• Build integrations between distributed data processing frameworks and cloud storage services.
• Improve compatibility across modern data processing engines.
• Contribute to high-quality, production-grade backend services.
• Participate in architecture discussions and technical design.
• Collaborate with engineers across international teams and contribute to engineering best practices.

Tech stack

Must have

• Java
• Python (working proficiency)
• Experience with at least one of: Apache Flink, Spark, Kafka, or Apache Beam
• Understanding of Data Lake / Lakehouse architecture

• Experience with Google Cloud Platform (BigLake, GCS, KMS, or related services)

   

Nice to have

• Apache Iceberg
• Open Source contributions
• Experience with distributed systems
• Cross-system integration experience

What we’re looking for

• Strong commercial experience with Java backend development.
• Experience building data-intensive or distributed backend systems.
• Solid understanding of cloud-native architectures.
• Experience working with modern data processing technologies.
• Strong problem-solving skills and ownership mindset.
• Good communication skills and ability to work in a distributed international team.

What we offer

• Paid vacation and sick leave
• 11 official public holidays per year
• Personal Career Development Plan (CDP)
• Challenging engineering projects with modern cloud technologies
• Paid external training, conferences, and professional certifications
• Internal tech talks, workshops, and English classes
• Employee support program (healthcare, legal assistance, partner discounts)
• Corporate library with paper and e-books

If you’re excited about distributed systems, cloud data platforms, and building software that makes an impact beyond a single product, let’s talk!

Apply now or send us a message – we’d love to share more details about the project and see if it’s the right fit for you.

🚀 Project Description

From the engineering side, this role is focused on Backend + Infrastructure / DevOps as secondary skillset, with strong ownership over the technical foundation of the features.
 

✅ You are:
 

• Have practical experience from commercial projects, pet projects, hackathons, or open-source contributions
• Confident with Java, with readiness to work close to ML workloads and model-serving pipelines
• Comfortable building backend services and REST APIs
• Understand System design, asynchronous processing, and service integration
• Have experience with Docker and deploying services in cloud environments
• Understand how to build and maintain CI/CD pipelines
• Have hands-on experience with AWS or similar cloud platforms
• Are comfortable working with PostgreSQL
• Understand logging, monitoring, environment setup, and deployment workflows
   

➕ Will be a plus:
 

• Experience with MLOps or model-serving infrastructure
• Experience deploying ML models for inference on CPU
• Familiarity with Python, FastAPI, Spring Boot, or similar backend frameworks
• Experience with AWS services or similar
• Understanding of job queues, background workers, and long-running processing workflows
• Familiarity with infrastructure-as-code tools such as Terraform or similar
• Comfortable working with AI platforms and developer tools such as Cursor, Claude Code, or Codex
   

♟️ What We Expect from You:
 

• Use modern AI tools, frameworks, and approaches to work faster and more effectively
• Make practical decisions that help us launch faster without unnecessary overengineering
• Proactively identify bottlenecks, propose solutions, and help shape technical decisions
• Be comfortable working in an evolving product with changing priorities and early-stage ambiguity
   

🔑 Responsibilities:
 

• Implement and enhance backend services 
• Actively collaborate with the team lead and team
• Maintain the initial cloud environment for development, testing, and production
• Build and support processing pipelines for model execution and result delivery
• Configure logging, monitoring, and basic operational observability
• Ensure the system is reliable, maintainable, and easy to extend
• Utilize AI to review pull requests and contribute to engineering best practices
   

🍩 What we offer:
 

• Opportunity to work on an innovative product in the medical-tech domain
• High ownership and direct impact on product architecture
• Flexible work hours within the European time zone
• A fast-moving environment where strong engineers can influence product and technical decisions
• Paid 200$+ AI assistants and modern engineering tooling
• Professional development support, latest courses and certifications
• 20 business days of vacation
• 5 sick leave days
• National holidays covered
   

🗣 Recruitment process:
 

✔️ Technical Task → ☑️ AI Live Coding Task → ✅ Cultural-Fit Interview → 🏁 Offer

We at Sigma Software are looking for a Senior Java Engineer to join an exciting project in the domain of audience segmentation and engagement. This is a remote role open to candidates from Ukraine and Europe, offering the opportunity to work with cutting-edge technologies and high-scale systems.

You will be part of a team building a real-time platform that powers communications, personalization, automation, and customer engagement across diverse ecosystems. At Sigma Software, we value innovation, collaboration, and technical excellence.

Why join us? You’ll work on challenging tasks, contribute to architectural decisions, and have the freedom to experiment with new technologies while improving data systems at scale.
 

Customer

Our customer is a leading EdTech company that uses AI and data-driven technologies to personalize learning experiences, optimize user engagement, and improve marketing effectiveness through advanced audience targeting and analytics.
 

Project

The project is a real-time platform that enables product teams and business stakeholders to define and manage dynamic user groups based on user attributes, relationships, behavioral events, and historical activity.

Responsibilities

• Design and implement core components of the audience segmentation platform
• Develop and evolve a flexible segment definition language supporting complex targeting scenarios
• Build scalable evaluation engines for processing large-scale entity and relationship data
• Implement relationship-based audience resolution across multiple entity types
• Optimize incremental recomputation for continuous data changes
• Create event-driven pipelines for real-time segment accuracy
• Ensure governance, auditability, and lifecycle traceability of segments
• Design low-latency resolution services for high-scale operations
• Develop caching strategies for dynamic segments and snapshots
• Optimize system performance, scalability, and operational efficiency
• Collaborate with product and engineering teams to define platform capabilities and architecture
• Provide technical leadership and contribute to architectural decisions

Requirements

• At least 5+ years of backend engineering experience
• Strong Java expertise
• Proven experience building distributed systems
• Knowledge of query engines, search platforms, rules engines, segmentation platforms, or analytics systems
• Strong understanding of data modeling and domain-driven design principles
• Experience with event-driven architectures
• Skilled in designing scalable APIs and backend services
• Strong problem-solving and performance optimization skills
• Experience with cloud-native architectures
• Ability to drive technical decisions and contribute to system architecture
• Upper-Intermediate+ English level
   

Will be a plus

• Experience with recommendation engines
• Knowledge of Quarkus
• Experience building Customer Data Platforms (CDP)
• Experience with marketing automation systems
• Expertise in audience segmentation or personalization platforms
• Familiarity with graph-based data models and relationship traversal
• Experience with search technologies (Elasticsearch, OpenSearch)
• Experience with stream processing technologies
• Experience with Google Cloud Platform
• Experience with large-scale analytics systems

Join a project where scalability, resiliency, and real-time communication are at the core of the engineering challenge. We are looking for a Senior Java Developer to help build a high-load multi-channel communications platform used to deliver critical notifications to millions of users worldwide.

As part of Sigma Software, you will work remotely in an international engineering environment and contribute to the development of distributed, event-driven systems with complex delivery pipelines and fault-tolerant architecture.

We at Sigma Software offer the opportunity to influence architectural decisions, work on long-term product development, and collaborate with experienced engineering teams building modern cloud-native solutions.

Customer

Our customer is a leading EdTech company that uses AI and data-driven technologies to personalize learning experiences, optimize user engagement, and improve marketing effectiveness through advanced audience targeting and analytics.

Project

The project focuses on building a modern multi-channel communications platform capable of delivering critical notifications across email, SMS, voice, and push channels at massive scale. The system supports automated workflows, emergency broadcasts, consent management, reporting and analytics, provider failover strategies, and real-time event processing.

Responsibilities

• Design and implement a scalable event-driven communications platform
• Build highly reliable and fault-tolerant message delivery systems
• Manage large-scale real-time event processing pipelines
• Design and implement multi-channel delivery pipelines across email, SMS, voice, and push channels
• Handle compliance requirements, consent management, and communication policies
• Support emergency and high-priority notification workflows
• Implement provider failover and resiliency strategies to ensure delivery continuity
• Build tracking systems for delivery status, retries, and engagement events
• Design and implement observability, reporting, and analytics infrastructure
• Develop event processing and message orchestration workflows
• Implement provider integrations and external messaging service adapters
• Ensure system scalability, throughput, and performance under high load
• Collaborate with product and engineering teams on communication flows and requirements
• Contribute to architectural decisions and long-term platform evolution
• Ensure operational stability, reliability, and maintainability of the system

Requirements

• At least 5 years of  software development experience
• Strong expertise in Java development
• Experience with distributed systems
• Strong experience with event-driven architectures
• Experience with messaging systems, queues, streams, and brokers
• Experience designing high-scale APIs and backend services
• Strong understanding of system reliability and fault tolerance

• Upper-Intermediate English level

   

Will be a plus:

• Experience with email or SMS delivery systems
• Experience with telecom or messaging infrastructure
• Experience with marketing automation platforms
• Experience with notification or engagement systems
• Experience with workflow engines
• Experience with compliance-heavy systems, including consent and GDPR-like regulations
• Experience with high-throughput event processing systems
• Experience with cloud-native platforms, preferably GCP

Want to work on technologies used by data platforms at a global scale?

We're looking for Senior and Middle+ Java Engineers to join a long-term cloud data infrastructure project focused on modern Data Lakehouse technologies, distributed systems, and open-source development.

You'll be building integrations between data processing frameworks and cloud services, improving compatibility across the ecosystem, and contributing to technologies that power large-scale analytics platforms. If you enjoy solving complex backend challenges and working close to the open-source community, this role is for you.

What you'll be working on

• Develop new features for large-scale data infrastructure components.
• Build integrations between distributed data processing frameworks and cloud storage services.
• Improve compatibility across modern data processing engines.
• Contribute to high-quality, production-grade backend services.
• Participate in architecture discussions and technical design.
• Collaborate with engineers across international teams and contribute to engineering best practices.

Tech stack

Must have

• Java
• Python (working proficiency)
• Experience with at least one of: Apache Flink, Spark, Kafka, or Apache Beam
• Understanding of Data Lake / Lakehouse architecture
• Experience with Google Cloud Platform (BigLake, GCS, KMS, or related services)

Nice to have

• Apache Iceberg
• Open Source contributions
• Experience with distributed systems
• Cross-system integration experience

What we're looking for

• Strong commercial experience with Java backend development.
• Experience building data-intensive or distributed backend systems.
• Solid understanding of cloud-native architectures.
• Experience working with modern data processing technologies.
• Strong problem-solving skills and ownership mindset.
• Good communication skills and ability to work in a distributed international team.

Working conditions

• 🌍 Remote
• 🌎 Collaboration with US-based engineering teams
• ⏰ Daily overlap by 10:00 AM PST
• 📅 Long-term project
• Flexible working schedule (8-hour workday)

What we offer

• Paid vacation and sick leave
• 11 official public holidays per year
• Personal Career Development Plan (CDP)
• Challenging engineering projects with modern cloud technologies
• Paid external training, conferences, and professional certifications
• Internal tech talks, workshops, and English classes
• Employee support program (healthcare, legal assistance, partner discounts)
• Corporate library with paper and e-books

If you're excited about distributed systems, cloud data platforms, and building software that makes an impact beyond a single product, let's talk!

Apply now or send us a message - we'd love to share more details about the project and see if it's the right fit for you.

• One of the world's largest providers of products and services to the energy industry has a need to develop and support enterprise information system in Oil & Gas domain.
  Product being developed is a cloud solution for interpretation of geological and geophysical data. Project is based on SCRUM methodology.
  Our project is stable, long-term and constantly adopts new technologies such as newest Java and Eclipse RCP versions, cloud and GPU computing, microservices architecture and other innovative frameworks.
  Work supposes close cooperation with Customer team located in Houston and following Agile principles.
  Our team is senior, supportive and friendly.

• Responsibilities:

  • Collaborate closely with geophysicists, data scientists, and software engineers to translate scientific domain requirements into robust on-prem or Cloud software
  solutions.
  • Design, develop, and maintain high-performance applications for geophysical and geological data analysis, interpretation and visualization (e.g., seismic, horizon,
  fault, velocity model, etc.)
  • Present architectural designs and technical proposals to the architecture review board.
  • Ability to break down development tasks and lay out clear implementation roadmaps.
  • Implement and optimize computation algorithms
  • Design and develop both thin and thick client applications that interact with cloud-based microservices.
  • Ensure high code quality through unit testing, code reviews, security hardening and continuous integration with other domain tools
  • Provide technical support and lead user troubleshooting sessions to resolve issues and ensure smooth operation of DSG application.
  • Mentor junior developers and actively contribute to architectural and implementation decisions.
  • Embrace Agile/Scrum methodologies, delivering and demonstrating working solutions at the end of each sprint
  • Stay current with emerging technologies and trends in geophysical computing and software development.

• Mandatory Skills Description:

  6+ years of hands-on Java development experience
  Strong Java Core knowledge
  Experience with desktop development frameworks: Swing, SWT, or Eclipse RCP
  Proven experience designing and building complex systems end-to-end, not just maintaining or extending existing ones
  Practical understanding of multithreaded programming: ability to implement concurrency in code directly, not only through third-party libraries
  Solid knowledge of design patterns and software architecture principles
  Ability to clearly articulate past projects, personal responsibilities, and concrete individual contributions
  Experience working in non-microservices, non-cloud-native development environments (desktop, embedded, or domain-specific platforms)
  Stable career trajectory, no fragmented job history with short tenures

• Nice-to-Have Skills Description:

  C++ development skills
  Practical experience with the Eclipse RCP framework
  OSGi knowledge
  Oil & Gas domain experience

• Languages:
  • English: B2 Upper Intermediate

We are looking for an experienced Senior Java Full Stack Engineer (Java+Python, React) 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
• designing, developing, and deploying cloud/hybrid-based solutions

Requirements:

• BS degree in Computer Science or equivalent combination of education and experiencet
• 5-6+ years of experience with Java
• 1 year of experience with Python
• 1 year of experience in front-end development with React
• Experience with Functional Programming and Java Streams
• Experience with AI (Cloud is preferable)
• Experience in development in Kotlin – nice to have
• 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
• Upper-intermediate English level - verbal and written

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

*not applicable for freelancers

Project description

One of the world's largest providers of products and services to the energy industry has a need to develop and support enterprise information system in Oil & Gas domain.
Product being developed is a cloud solution for interpretation of geological and geophysical data. Project is based on SCRUM methodology.
Our project is stable, long-term and constantly adopts new technologies such as newest Java and Eclipse RCP versions, cloud and GPU computing, microservices architecture and other innovative frameworks.
Work supposes close cooperation with Customer team located in Houston and following Agile principles.
Our team is senior, supportive and friendly.

Responsibilities

Collaborate closely with geophysicists, data scientists, and software engineers to translate scientific domain requirements into robust on-prem or Cloud software

solutions.

Design, develop, and maintain high-performance applications for geophysical and geological data analysis, interpretation and visualization (e.g., seismic, horizon,

fault, velocity model, etc.)

Present architectural designs and technical proposals to the architecture review board.

Ability to break down development tasks and lay out clear implementation roadmaps.

Implement and optimize computation algorithms

Design and develop both thin and thick client applications that interact with cloud-based microservices.

Ensure high code quality through unit testing, code reviews, security hardening and continuous integration with other domain tools

Provide technical support and lead user troubleshooting sessions to resolve issues and ensure smooth operation of DSG application.

Mentor junior developers and actively contribute to architectural and implementation decisions.

Embrace Agile/Scrum methodologies, delivering and demonstrating working solutions at the end of each sprint

Stay current with emerging technologies and trends in geophysical computing and software development.

Skills

Must have

6+ years of hands-on Java development experience

Strong Java Core knowledge

Experience with desktop development frameworks: Swing, SWT, or Eclipse RCP

Proven experience designing and building complex systems end-to-end, not just maintaining or extending existing ones

Practical understanding of multithreaded programming: ability to implement concurrency in code directly, not only through third-party libraries

Solid knowledge of design patterns and software architecture principles

Ability to clearly articulate past projects, personal responsibilities, and concrete individual contributions

Experience working in non-microservices, non-cloud-native development environments (desktop, embedded, or domain-specific platforms)

Stable career trajectory, no fragmented job history with short tenures

Nice to have

C++ development skills

Practical experience with the Eclipse RCP framework

OSGi knowledge

Oil & Gas domain experience

Languages

English: B2 Upper Intermediate

Work according to the Azerbaijan public holiday calendar. 

Work from the client's office in Baku. 

Willingness to undertake a long-term business trip at the client's expense for 6+ months (including flight tickets, accommodation, and per diem expenses). 

Project Responsibilities 

Design, develop, and maintain backend services for banking and financial products. 

Develop scalable microservices and integration solutions. Design and implement REST APIs and asynchronous integrations. 

Work with Oracle and PostgreSQL databases, including performance optimization. Implement event-driven solutions using Kafka and RabbitMQ. 

Participate in architecture discussions, code reviews, and technical design activities. 

Support production environments and troubleshoot complex issues.

Collaborate with analysts, architects, QA, and DevOps teams throughout the SDLC.

Must-haves 

5+ years of backend development experience. 

Experience in banking, fintech, payments, or financial services. 

Strong proficiency in Java (Java 11/17+) and Spring Boot. 

Experience with microservice architecture. 

Strong experience with Oracle and PostgreSQL. 

Hands-on experience with Apache Kafka and RabbitMQ. 

Experience designing and developing REST APIs. 

Understanding of distributed systems and event-driven architectures.

Strong SQL skills and database performance optimization experience. Experience with Git and CI/CD pipelines. 

Understanding of software design patterns and clean code principles. Experience working in Agile/Scrum environments. 

Nice-to-have 

Experience with Kotlin or Go. 

Docker and Kubernetes/OpenShift. 

Experience with monitoring and logging solutions (ELK, Grafana, Prometheus). 

Experience with high-load and mission-critical systems. 

Knowledge of payment processing, transaction management, card systems, or financial integrations.
 

🔹Who we are!
At Levi9, we are passionate about what we do. We love our work and together in a team, we are smarter and stronger. We are looking for skilled team players who make change happen. Are you one of these players?

🔹About the project
Our client is a leading media company in Western Europe, delivering high-quality content across various platforms, including newspapers, magazines, radio, TV, websites, apps, and podcasts. Their brands reach millions of people daily, shaping the media landscape with independent and trusted journalism.
We are collaborating with them to develop a cutting-edge digital advertising solution that optimizes media campaigns and enhances user engagement. The product is already in production, and we are continuously evolving its features to meet the dynamic needs of the market.

🔹Responsibilities
The job in short: join the mature and capable Identity team to work on everything related to login, authentication, and authorization for millions of end-users across numerous brands. As a member of this team, you’ll be responsible for software craftsmanship in the broad sense of the term. You’ll help define and refine solutions to problems in close collaboration with business stakeholders, develop software, and safeguard the technical foundation of our platforms (including automated tests, deployment pipelines, cloud infrastructure, monitoring, and production support). This role comes with full end-to-end ownership — from architecture decisions and implementation to release, production monitoring, operational support, and continuous improvement

🔹Requirements

- Strong backend developer with solid experience in Java and Spring framework ecosystem
- Knowledge of frameworks such as Angular or React is not required, but strong JavaScript fundamentals are essential
- Hands-on experience with AWS, especially with services such as Lambda
- Practical experience building cost-efficient solutions in AWS
- Well-versed in modern web technologies such as HTTP, REST, JSON, authentication flows, and distributed system integrations
- Experience working with both relational databases and non-sql (MongoDB)
- Strong communication skills

🔹Nice to have
- Experience with Playwright, Jest, or Vitest Interest in and/or experience with Identity-related topics such as OpenID Connect, OAuth, JWT, public key cryptography, and authentication platforms
- Experience with Thymeleaf Experience with other cloud providers in addition to AWS

🔹Interview Process
1. Recruitment Interview (30 minutes)
A short introduction to discuss your experience, expectations, and the role.
2. Technical Interview (90 minutes)
A technical discussion focused on your expertise, problem-solving skills, and engineering experience.
3. Take-Home Assignment
Showcase your technical skills by applying engineering best practices and clean code principles.
4. Final Interview (in English)
Present your assignment, explain your technical decisions, and discuss your approach with the team.

🔹9 reasons to join us:
1. Today we're working with the technology of tomorrow
2. We don't wait for a change. We are the change
3. We're experts in creating experts (Levi9 academy, Lead9 program for leaders)
4. No micromanagement. We are free birds with a clear understanding of what the high performance is!
5. Learning in Levi9 never stops (unlimited Udemy for business, meetups, English courses, Professional trainings)
6. Here you can train your body and mind
7. We've gathered the best locations - comfortable, cozy and pet-friendly offices in Kyiv (5 minutes from Olimpiyska subway station) and Lviv (5 minutes from the Opera Theatre) with regular offline internal events
8. We have master's degree in work-life balance
9. We are actively supporting Ukraine with constant donations and volunteering

About us:

EveryMatrix is a leading B2B SaaS provider delivering iGaming software, content and services. We provide casino, sports betting, platform and payments, and affiliate management to 200 customers worldwide.

But that's not all! We're not just about numbers, we're about people. With a team of over 1000 passionate individuals spread across twelve countries in Europe, Asia, and the US, we're all united by our love for innovation and teamwork.

EveryMatrix is a member of the World Lottery Association (WLA) and European Lotteries Association. In September 2023 it became the first iGaming supplier to receive WLA Safer Gambling Certification. EveryMatrix is proud of its commitment to safer gambling and player protection whilst producing market leading gaming solutions.

Join us on this exciting journey as we continue to redefine the iGaming landscape, one groundbreaking solution at a time.

We are looking for a passionate and dedicated Strong Middle Java Developer to join our team in Lviv!

About the job:

It is a part of EveryMatrix platform that is responsible for collecting, storing, processing and utilizing hundreds of millions of transactions from the whole platform every single day. We develop Business Intelligent solutions, reports, 3rd party integrations, data streaming and other products for both external and internal use. The team consists of 35 people and is located in Lviv. We are looking for motivated, proactive developers willing to learn modern technologies, working in a challenging and fast-paced environment. You will be working in small cross-functional Agile teams responsible for the end-to-end development and component support using the You Build It, You Run It’ principle.

What You'll get to do:

• Extend and optimize the Rules Engine.
• Collaborate with cross-functional teams to deliver innovative solutions.
• Participate in code reviews and contribute to team knowledge sharing.
• Troubleshoot, debug, and resolve software defects and issues.
• Assist in designing and implementing new features.
• Develop unit and integration tests to ensure software quality.
• Document code, processes, and technical specifications.
• Stay up-to-date with Java best practices and emerging technologies.
• Support deployment and maintenance of applications in development and production environments.
• Participate in Agile ceremonies and contribute to sprint planning and retrospectives.

What You need to know:

• Java Core: Deep understanding of collections, performance tuning, type systems, garbage collection, and exception handling.
• Multithreading & Concurrency: Expertise in managing asynchronous computations and ensuring thread safety.
• HTTP & RESTful Services: Strong experience in developing and consuming RESTful services.
• RDBMS & SQL: Proficiency in writing complex SQL queries and a solid understanding of RDBMS theory.
• Spring Boot: Practical experience with the Spring ecosystem, including a strong theoretical foundation.
• Apache Kafka: Proven experience with Kafka, including both practical application and theoretical knowledge. Unit/Integration Testing: Demonstrated ability to write testable code with adequate coverage.

Nice to Have:

• Experience with Docker & Kubernetes. 
• Experience with the Google Cloud platform. 
• Knowledge of Online Casino/Sports Systems.

Here's what we offer:

• Start with 22 days of annual leave, with 2 additional days added each year, up to 32 days by your fifth year with us.
• 3 sick leave days per year, no doctor's note required; 30 medical leave days with medical allowance
• Hybrid work schedule is available after the first three months of employment, with up to 50 days of work from home per year.
• Benefit from two Free Fridays each year, limited to one per quarter.
• Daily catered lunch or monthly lunch allowance. 
• Private Medical Subscription. 
• Access online learning platforms like Udemy for Business, LinkedIn Learning or O’Reilly, and a budget for external training.
• Gym allowance.
• Corporate English lessons.
• Support for New Parents:
• 21 weeks of paid maternity leave, with the flexibility to work from home full-time until your child turns 1 year old.
• 4 weeks of paternity leave, plus the flexibility to work from home full-time until your child is 13 weeks old.

Our office perks include on-site massages and frequent team-building activities in various locations.

At EveryMatrix, we're committed to creating a supportive and inclusive workplace where you can thrive both personally and professionally. Come join us and experience the difference! 
 

PLEASE NOTE that we are searching for candidates who are located in Lviv and are able to visit office in Lviv.

About us:

EveryMatrix is a leading B2B SaaS provider delivering iGaming software, content and services. We provide casino, sports betting, platform and payments, and affiliate management to 200 customers worldwide.

But that's not all! We're not just about numbers, we're about people. With a team of over 1000 passionate individuals spread across twelve countries in Europe, Asia, and the US, we're all united by our love for innovation and teamwork.

EveryMatrix is a member of the World Lottery Association (WLA) and European Lotteries Association. In September 2023 it became the first iGaming supplier to receive WLA Safer Gambling Certification. EveryMatrix is proud of its commitment to safer gambling and player protection whilst producing market leading gaming solutions.

Join us on this exciting journey as we continue to redefine the iGaming landscape, one groundbreaking solution at a time.
 

We are looking for a passionate and dedicated Trainee Java Developer to join our team in Lviv!

What You'll get to do:

• Take part in collecting odds data from bookmakers, both from dedicated XML/JSON feeds – using Java – and from websites – site scraping;
• Offer technical support for existing clients.
• Take part in the daily maintenance and monitoring of developed odds collectors and other internal tools.
• In addition, it is of very high importance to maintain the highest possible quality of data collected from existing sources.

What You need to know:

• Java 21: Virtual Threads, Sequenced Collections, Sealed Classes, 
  HttpClient​
• Multithreading: Threads, ExecutorService, ReentrantLock, basic synchronized, CompletableFuture​
• Streams & Optionals: Fluent with Stream API, Optional, aware of OM OptionalUtils​
• Collections: Clear understanding where and how to use List, Set, Map, Queue, Dequee, Collections.synchronizedMap, ConcurrentHashMap, Immutable collections​
• Regex: Basic usage with Pattern and Matcher for text parsing and validation​
• HTTP Basics: Knowledge of HTTP methods – GET, POST, PUT, DELETE, and their typical use cases
• Version Controll - SVN, Git
  
  Nice to Have:
• Java projects from school, personal work, or internships.
• Exposure to Jsoup or similar parsing libraries. Interest in sports or betting.
• Experience building web scrapers.​
• English: A2+

Here's what we offer:

• Start with 22 days of annual leave, with 2 additional days added each year, up to 32 days by your fifth year with us.
• 3 sick leave days per year, no doctor's note required; 30 medical leave days with medical allowance
• Hybrid work schedule is available after the first three months of employment, with up to 50 days of work from home per year.
• Benefit from two Free Fridays each year, limited to one per quarter.
• Daily catered lunch or monthly lunch allowance. 
• Private Medical Subscription. 
• Access online learning platforms like Udemy for Business, LinkedIn Learning or O’Reilly, and a budget for external training.
• Gym allowance.
• Corporate English lessons.
• Support for New Parents:
• 21 weeks of paid maternity leave, with the flexibility to work from home full-time until your child turns 1 year old.
• 4 weeks of paternity leave, plus the flexibility to work from home full-time until your child is 13 weeks old.

Our office perks include on-site massages and frequent team-building activities in various locations.

At EveryMatrix, we're committed to creating a supportive and inclusive workplace where you can thrive both personally and professionally. Come join us and experience the difference!