Jobs Java

We are looking for a highly skilled Senior Java Engineer with additional experience in Python to join our team. The primary focus will be on building and maintaining high-performance, scalable, and secure applications using Java, while leveraging Python for automation, scripting, data processing, or integration tasks. This role is ideal for an engineer who is strong in Java development but comfortable applying Python as a supporting language where needed.

Responsibilities

• Design, develop, test, and maintain applications and services using Java as the primary technology stack.
• Write clean, efficient, and maintainable code following best practices and coding standards.
• Use Python for automation, data manipulation, system integration, and auxiliary services.
• Optimize applications for performance, scalability, and security.
• Troubleshoot, debug, and resolve technical issues.
• Communicate with internal product owners and stakeholders
• Document technical solutions and maintain up-to-date system knowledge.

Requirements

• 4+ years of professional software development experience with Java (Spring, Spring Boot, Hibernate).
• Experience with Python (scripting, automation, or backend services).
• Experience with RESTful APIs design and integration.
• Experience with relational database systems (preferably MySQL).
• Experience with cloud platforms (preferably GCP)
• Strong understanding of Agile methodologies, especially of the Scrum framework
• Strong problem-solving and analytical skills.
• Upper-Intermediate English or higher (both written and spoken).

Nice to Have

• Knowledge of messaging systems (RabbitMQ, etc.).
• Knowledge on DevOps process (CI/CD stages, gitflow, DevOps as shared responsibility)
• Experience with AI tools (e.g., Claude Code, etc.)
• Experience with infrastructure implementation (Kubernetes, Docker)
• HIPAA Awareness

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

N-iX is looking for a highly skilled Middle Java Engineer with additional experience in Python to join our team. The primary focus will be on building and maintaining high-performance, scalable, and secure applications using Java, while leveraging Python for automation, scripting, data processing, or integration tasks. This role is ideal for an engineer who is strong in Java development but comfortable applying Python as a supporting language where needed.

Responsibilities

• Design, develop, test, and maintain applications and services using Java as the primary technology stack.
• Write clean, efficient, and maintainable code following best practices and coding standards.
• Use Python for automation, data manipulation, system integration, and auxiliary services.
• Optimize applications for performance, scalability, and security.
• Troubleshoot, debug, and resolve technical issues.
• Communicate with internal product owners and stakeholders
• Document technical solutions and maintain up-to-date system knowledge.

Requirements

• 3+ years of professional software development experience with Java (Spring, Spring Boot, Hibernate).
• Experience with Python (scripting, automation, or backend services).
• Experience with RESTful APIs design and integration.
• Experience with relational database systems (preferably MySQL).
• Experience with cloud platforms (preferably GCP)
• Strong understanding of Agile methodologies, especially of Scrum framework
• Strong problem-solving and analytical skills.
• Upper-Intermediate English or higher (both written and spoken).

Nice to Have

• Knowledge of messaging systems (RabbitMQ, etc.).
• Knowledge on DevOps process (CI/CD stages, gitflow, devops as shared responsibility
• Experience with AI tools (e.g. Claude Code etc.)
• Experience with infrastructure implementation (Kubernetes, Docker)
• HIPAA Awareness

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

Our client is one of the world’s leading global fashion retailers operating in more than 200 markets through both e-commerce platforms and thousands of physical stores worldwide. The company manages the full fashion value chain – from design and manufacturing to distribution and retail – with a strong focus on flexibility, digital integration, and sustainability.
Technology plays a critical role across all business areas, including stores, e-commerce, logistics, and supply chain. Engineering teams work in small, autonomous product teams that own the full lifecycle of the solutions they build. Engineers are encouraged to understand the broader business context, collaborate directly with stakeholders and users, and actively contribute to technical and product decisions.

Responsibilities:

• Understand business processes and how systems support different operational domains such as retail, logistics, and e-commerce.
• Collaborate with product stakeholders and end users to identify problems and define effective solutions.
• Design, develop, and maintain scalable APIs and microservices.
• Participate in architectural discussions and translate complex problems into maintainable technical solutions.
• Write clean, maintainable code following best engineering practices and design patterns.
• Ensure reliability, availability, and resilience of backend services.
• Implement automated tests and collaborate with QA to maintain strong test coverage.
• Use data and AI-powered tools when appropriate to support development and improve decision-making processes.
• Work closely with the Product Owner to refine and technically define product backlog items.
• Contribute to CI/CD pipelines and support solutions in production.
• Continuously analyze system usage and suggest technical or functional improvements that add value to the product.

Requirements:

• 5+ years of software development experience
• 4+ years of extensive Java development experience, Maven
• 2-3 years of Spring framework and building Spring web applications
• Understanding and experience developing and deploying microservices
• Experience developing REST interfaces, OpenApi
• Excellent design, coding, and debugging skills
• OOP, OOD, DDD. Design Patterns proficient
• Working knowledge of relational databases, NoSQL technologies – Mongo DB
• Working knowledge of Kafka, Kafka streaming (can be optional)
• Experience with different clouds – AWS, Azure
• Working knowledge of OpenShift, Kubernetes
• Familiar with GrayLog, Grafana

Soft Skills:

• Strong communication and collaboration skills.
• Product-oriented mindset and ability to understand business needs behind technical solutions.
• Focus on quality, simplicity, and sustainable engineering practices.
• Proactive attitude, ownership mindset, and willingness to continuously improve both product and team processes.

Languages:

• English – Upper-Intermediate or higher

What is the purpose of this position?

We are looking for a Middle+/Senior Java engineer with 4+ years of commercial experience. Working alongside other engineers, you'll design, build, and maintain scalable solutions, work closely with business stakeholders and analytics teams in miltech/deeptech projects. 

Qualifications you`ll need to bring:

• 4+ years of commercial experience with Java
• Strong experience with Spring Boot, Spring Security, and REST/gRPC API design
• Knowledge of CI/CD and Docker
• Proficiency with PostgreSQL or another relational DB
• Experience with multithreading, synchronization, and concurrent programming
• Knowledge of data structures and algorithms
• ​​Familiarity with modern and upcoming standards
• Ability to work self-managing and autonomously
• Excellent communication skills for direct interaction with a customer
• Experience with Embedded will be a huge plus
• English level - Upper-Intermediate

We offer:

• Remote Work Environment. Work from anywhere and be part of a geographically diverse team
• Stay Ahead of the Curve. Work with cutting-edge technologies
• Possibility of payment by PE account, Payoneer, or Wise
• Bonus & Referral system
• Paid 12 vacations and 5 sick leaves per year
• Flexible hours 
• Compensation program for purchasing new laptops
• Paid professional certifications & educational courses
• Paid English classes
• Friendly atmosphere with quarterly team building
• No bureaucracy

Ready to try your hand? Do not pull the cat’s tail, send your CV without a doubt! 

On behalf of our Client from Canada, Mobilunity is looking for a Full Stack Java Developer.

Our Client is a technology company focused on automating customs and freight logistics processes. The company’s main goal is to help customs brokers, freight forwarders, and importers simplify and optimize cross-border trade through modern, cloud-based solutions and well-structured APIs.

They are seeking a talented and experienced Full Stack Java Developer to join its fully remote team. You will play a key role in designing, developing, and maintaining a next-generation cloud-native SaaS platform for customs brokers and freight forwarders in North America. This is an exciting opportunity to contribute to a fast-paced development environment focused on high-quality design and clean code, using modern Java technologies and a service-based architecture.

Key Responsibilities:

• Design, develop, and implement new features across the full stack, including UI, backend server-side code, and functional concepts
• Work within a modular monolith architecture based on OSGI
• Ensure high performance, scalability, and security of applications
• Collaborate closely with product, design, and support teams to define and deliver new product capabilities
• Write and maintain comprehensive automated test units

Required Skills and Experience:

• 5+ years of professional experience in Full Stack Development
• Expertise in Java (preferably Java 21+)
• Strong working knowledge of Backend Server-Side development
• Experience with Service-Based Architectures (ideally OSGI/Bnd)
• Proficiency in modern UI Design/Development (e.g., Eclipse SWT or equivalent thick client/desktop application experience is a plus)
• Experience with PostgreSQL or other relational databases
• Working knowledge of developing automated test units using frameworks like JUnit/Mockito
• Familiarity with version control systems, particularly Git (GitHub)
• Ability to work independently and excel in a collaborative team environment
• At least Upper-Intermediate level of English

Nice-to-Have skills:

• Experience with reactive programming ,RXJava
• Experience using AI-powered coding tools like CoPilot

Roost is a fintech platform automating security deposit refunds for multifamily operators. We’ve built the workflows end-to-end—now we’re focused on strengthening and scaling our bank integration layer.

We’re looking for someone who has already built and shipped production-grade money movement systems to extend our Wells Fargo integration and enhance how funds move through our platform.

What you’ll do:

• Own bank-integrated fund flows end-to-end

• Connect transfers to existing workflow events

• Ensure reliability (idempotency, retries, error handling)

• Support auditability and reconciliation

This is a high-impact role where financial accuracy matters—you’ll directly shape how money moves through our system, with the opportunity to transition into a full-time role.

Looking for:

• Strong backend experience (Node.js preferred)

• Proven experience building and owning payments or banking integrations in production

• Understanding of ACH, book transfers, and fund flow design

If this sounds like you, please apply.

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:

Over the past few years Coro has received $275M in funding and is one of the fastest growing Cybersecurity companies in the world. The funding is primarily being used to enhance the Coro Cybersecurity SaaS platform and for additional headcount growth, as Coro continues to expand globally.   

Coro started in Tel-Aviv, Israel and is also headquartered in Chicago, IL with additional offices in New York, London, and remotely across the globe. As a global organization, Coro gives you the ability to work with people and teammates from around the world. 

Coro’s AI enabled Modular Cybersecurity Platform is the only one in the industry specifically designed to provide Mid-Market customers with scalable and affordable “enterprise grade” protection for all of their priority threat vectors. 

About the Role:

This is a hands-on leadership role for a Backend Team Lead who will guide a team of backend engineers while staying directly involved in coding, architecture, and delivery. You will work on core backend systems behind Coro’s cybersecurity platform, building and scaling high-load services that process large volumes of security and telemetry data in real time.

These systems are responsible for collecting, processing, and analyzing data from multiple sources, including endpoints, cloud environments, and product integrations. They support critical product capabilities such as threat detection, security analytics, anomaly identification, and automated response workflows, making this a mission-critical leadership role at the core of Coro’s product.

If you are looking for a role where you can combine leadership with technical ownership, shape team culture, and build highly scalable backend services for a fast-growing global cybersecurity platform, this is the role for you

Key Responsibilities:
 

• Lead a team of highly skilled and passionate developers
• Partner with the Product Manager to build the road-map for the team
• Understand the team objectives and key results and make sure that the team are on the path to achieving them
• Participate in making decisions on the architecture and technologies
• Conduct the team ceremonies: Daily stand-ups, sprint planning and retro meetings
• Help create and enforce strong engineering standards, code quality, and best Engineering practices
• Take an active part in the implementation (hands-on) of the team’s various services and features
• Help your team members grow by mentoring them, building their growth plan with them and enable them opportunities to implement it

Required Competence and Skills:

• 6+ years of backend/server-side development with Java
• 2+ years of proven experience leading an engineering team 
• Strong hands-on experience with Spring Framework and MongoDB
• Deep understanding of multithreading and concurrency
• Solid knowledge of OOP concepts and design patterns
• Proven experience with microservices architecture
• Experience working with high-load backend systems
• Proficiency in cloud-native environments (preferably AWS)

Nice to have:
 

• Experience with Redis and RabbitMQ
• Experience with Elasticsearch/OpenSearch 
• Familiarity with Docker / Kubernetes
• Experience in Cybersecurity domain 

Job Description

• Strong proficiency in Java (JDK17+) and Spring Framework (2.x–5.x).
• Understanding of REST APIs and JSON-based integrations.
• Solid SQL experience (queries, joins, optimization).
• Proficiency with GitLab, AWS and CI/CD workflows.
• Familiarity with UI frameworks (vue.js).
• Good communication and task management skills.

Job Responsibilities

• Design, develop, and maintain scalable, API-driven backend services.
• Align backend systems with modern data modeling and orchestration standards.
• Collaborate with engineering, product, and design teams to ensure seamless integration across the broader data platform.
• Implement and refine RESTful APIs following established design guidelines.
• Troubleshoot complex technical issues and optimize performance of applications.
• Collaborate closely with cross-functional teams, including Product Manager, FE Engineers, and Product Owners, to gather requirements and deliver high-quality solutions.

Department/Project Description

Client is a leading global Contract Research Organization (CRO) that provides Phase I-IV clinical trial management, market access, and technology solutions with over 30 years of experience.

We are looking for a Middle Backend Engineer to join a product-driven fintech environment focused on building next-generation deposit solutions for European banking partnerships. 

You will become part of a cross-functional team responsible for a core deposit platform that powers both B2C and B2B channels. The platform enables banks to offer competitive deposit products while ensuring a seamless and secure customer experience. The system processes millions of requests daily and plays a critical role in handling deposit orders and maintaining their lifecycle over time. This is a high-load, business-critical domain where precision, reliability, and resilience are non-negotiable.
If you enjoy working on scalable distributed systems, care about data integrity, and want to have real impact in a fintech product — this role is for you.

Responsibilities:

• Designing, developing, and maintaining backend microservices in a modern Java ecosystem;
• Building and supporting complex integrations with third-party CMS tools;
• Ensuring accuracy and consistency of financial and accounting-related data;
• Improving system resilience, scalability, and performance;
• Collaborating closely with cross-functional teams in a product-oriented setup;
• Participating in discovery, refining requirements, and contributing to well-defined user stories.

Requirements: 

• Strong hands-on experience with Java and Spring Boot (modern versions);
• Solid background in microservices and event-driven architectures;
• Experience with Kafka and AWS-based environments;
• Understanding of high-load and distributed systems;
• Strong communication skills and experience working in cross-functional teams;
• Experience participating in discovery and requirements analysis.

Nice to have:

• FinTech or financial domain experience;
• Interest in product thinking and contributing beyond pure engineering.

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

N-iX is looking for a Senior Back-end (Java+Python) engineer to join our team. 
 

The Backoffice Support Team (BST) owns the systems and tools used internally by our backoffice teams, including Customer Service and Operations, to manage customers and commercial partners. The team is responsible for the development, maintenance, and continuous improvement of internal support platforms and workflows.

This includes:
● Zendesk is the main ticketing system
● Postbox, the internal customer communication area
● Custom integrations with core systems and other internal services

BST plays a key role in enabling operational efficiency, ensuring that internal users have reliable, scalable, and well-integrated tools to handle customer and partner interactions effectively.

Technical Skills (Must-Haves)

Experience:

• University degree in Computer Science or a related field, or equivalent practical experience
• 5+ years of backend engineering experience, with a strong background in Java and Python development
• Strong expertise in:
  • Java 21, Spring Boot 3
  • Python 3 (FastAPI experience is a plus)
  • MySQL 8, Hibernate
  • Apache Kafka
• Solid experience with AWS (S3, RDS, Lambda, Airflow) and cloud-native development
• Experience with CI/CD pipelines (GitLab, Harness)
• Hands-on experience with Kubernetes
• Experience using AI-assisted development tools
• Familiarity with monitoring tools: Grafana, Datadog
• Strong communication skills, ability to run discovery, gather requirements, and write detailed user stories
• English level: Upper-Intermediate or higher

Nice-to-Haves:

• Experience in financial technologies
• Familiarity with Zendesk administration or JavaScript customizations
• Exposure to TypeScript, React, or React Native (collaboration with frontend teams)

Your Responsibilities

• Develop, optimize, and maintain backend infrastructure supporting internal tools, Zendesk integrations, and custom services.
• Maintain and extend the internal Postbox system, ensuring stable, real-time communication between customers and the business.
• Collaborate closely with Product, Platform, and Frontend teams to deliver end-to-end solutions.
• Ensure the accuracy and reliability of accounting-related data and the overall resilience of internal services.
• Participate in requirements discovery, refine user stories, and contribute to technical design and architecture discussions.
• Take part in an on-call rotation to support mission‑critical systems.
• Own services from concept to production, including development, deployment, monitoring, and continuous improvement.
• Continuously improve team processes, code quality, and technical foundations.

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

About us

RAW is a new studio with a conviction to create something that stands out in the sea of sameness. We develop innovative, easy-to-understand and highly entertaining slot games for the gaming industry. We were founded in March 2021, by well-known industry experts with strong investment backing.

 
At RAW iGaming, we believe in the fundamental principles of equality and diversity. We are committed to fostering an inclusive environment where everyone, regardless of gender, race, age, sexual orientation or beliefs, is respected and valued. This commitment is integral to our culture and drives our efforts to ensure equal opportunities and create a diverse and dynamic workforce.

Role Purpose

• Design and implement scalable, robust and reliable backend systems to support the live casino platform, ensuring they are secure and performant.

• Work closely with cross-functional teams including product owners, software developers, and QA engineers to deliver new features and functionality to the platform.

• Ensure that all backend systems are well-documented and well-tested, and that appropriate monitoring and alerting is in place to detect and resolve issues as they arise.

• Mentor and coach junior developers, helping them to grow their skills and knowledge in backend development, software engineering best practices and casino domain knowledge.

• Stay up-to-date with the latest trends, technologies and best practices in backend development, and actively apply them to improve the platform.

Accountabilities include, but not limited to

• Computer Science

• Software Development

• Programming

Knowledge, Skills & Experience

• At least 5 years of professional experience in backend development with a focus on high-availability, high-performance, scalable and secure systems.

• Knowledge and experience of the Live Casino Game Shows, or from a similar broadcasting application (dealing with streaming, camera switching, tally lights and similar) is highly considered.

• Proficiency in at least one backend programming language such as Java, Python or Go.

• Experience with databases such as PostgreSQL or MySQL, and caching systems such as Redis or Memcached.

• Experience with cloud infrastructure such as AWS or GCP, and containerization technologies such as Docker or Kubernetes.

• Strong understanding of software engineering principles, including design patterns, algorithms, and data structures.

• Excellent written and verbal communication skills, with the ability to collaborate effectively with cross-functional teams.

• A passion for software development and a desire to continuously learn and improve.

The budget for this role is 3000 - 3500 eur gross.

Benefits:

• 25 days paid vacation days
• paid public holidays
• Private health insurance (for candidates residing in Ukraine) 
• Additional marriage leave
• Additional paternity leave
• 5 days of paid sick leave
• Professional development support
• Department team building activities
• HR support

🚀 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:
Over the past few years Coro has received $275M in funding and is one of the fastest growing Cybersecurity companies in the world. The funding is primarily being used to enhance the Coro Cybersecurity SaaS platform and for additional headcount growth, as Coro continues to expand globally.   

Coro started in Tel-Aviv, Israel and is also headquartered in Chicago, IL with additional offices in New York, London, and remotely across the globe. As a global organization, Coro gives you the ability to work with people and teammates from around the world. 

Coro’s AI enabled Modular Cybersecurity Platform is the only one in the industry specifically designed to provide Mid-Market customers with scalable and affordable “enterprise grade” protection for all of their priority threat vectors. 

About the Role:
This is a hands-on leadership role for a Backend Team Lead who will guide a team of backend engineers while staying directly involved in coding, architecture, and delivery. You will work on core backend systems behind Coro’s cybersecurity platform, building and scaling high-load services that process large volumes of security and telemetry data in real time.

These systems are responsible for collecting, processing, and analyzing data from multiple sources, including endpoints, cloud environments, and product integrations. They support critical product capabilities such as threat detection, security analytics, anomaly identification, and automated response workflows, making this a mission-critical leadership role at the core of Coro’s product.
 

If you are looking for a role where you can combine leadership with technical ownership, shape team culture, and build highly scalable backend services for a fast-growing global cybersecurity platform, this is the role for you

📍Key Responsibilities:

• Lead a team of highly skilled and passionate developers
• Partner with the Product Manager to build the road-map for the team
• Understand the team objectives and key results and make sure that the team are on the path to achieving them
• Participate in making decisions on the architecture and technologies
• Conduct the team ceremonies: Daily stand-ups, sprint planning and retro meetings
• Help create and enforce strong engineering standards, code quality, and best Engineering practices
• Take an active part in the implementation (hands-on) of the team’s various services and features
• Help your team members grow by mentoring them, building their growth plan with them and enable them opportunities to implement it

📍Required Competence and Skills:

• 6+ years of backend/server-side development with Java
• 2+ years of proven experience leading an engineering team 
• Strong hands-on experience with Spring Framework and MongoDB
• Deep understanding of multithreading and concurrency
• Solid knowledge of OOP concepts and design patterns
• Proven experience with microservices architecture
• Experience working with high-load backend systems
• Proficiency in cloud-native environments (preferably AWS)

Nice to have:

• Experience with Redis and RabbitMQ
• Experience with Elasticsearch/OpenSearch 
• Familiarity with Docker / Kubernetes
• Experience in Cybersecurity domain 

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.

For our client we are looking for a Kafka Engineer / Architect (1 FTE)

Responsibilities

• Setting up a central Kafka instance
• Configuring and managing message brokers (Kafka)
• Operating and scaling Kafka-based systems
• Security hardening and performance optimization

Core Skills

• Deep, multi-year hands-on Kafka experience
• Strong background in configuring Kafka environments
• Experience managing message broker services
• Security, scaling & operational expertise
• Optional: Experience in AWS Cloud operations

Project Details

Start: ASAP

Workload: Full-time

Duration: 5–6 months

Location: Remote

Project Language: English

About Us: InnovatelU is a dynamic tech company delivering cutting-edge solutions. We're looking for a passionate Java Developer to join our team. If you have a solid Java foundation, are eager to grow, and learn quickly, we want to hear from you! 

Requirements: 
- Strong knowledge of Java 
- Knowledge of Spring (Spring Core, Spring AOP, Spring MVC, Spring Security, Spring Boot) 
- Familiarity with REST APIs, web services 
- Proficiency in version control tools (Git) 
- Experience with build tools like Maven and Gradle 
- Experience with relational databases (PostgreSQL) 
- Expertise in containerization (Docker) 

- Experience in unit and integration testing 
- Strong communication skills and teamwork ability 
- English level: Intermediate or higher 

Will Be a Plus: 

- Solid understanding of design patterns 

- Experience with NoSQL databases like MongoDB and Redis 

- Familiarity with messaging systems like Kafka and RabbitMQ 

- Experience with microservices architecture 

Responsibilities: 

- Collaborate with senior developers and project managers 

- Assist in designing, coding, and testing applications 

- Write well-designed, efficient, and testable code 

- Participate in code reviews 

- Debug and resolve technical issues 

- Contribute to application documentation 

Interview Stages: 

1. Test Task: 1 hour 

2. HR Interview: 30 minutes 

3. Technical Interview: 1 hour 

We Offer: 

- Full Remote 

- Constant support and mentoring 

- Paid 5 working days of sickness per a year; 

- Paid all official Ukrainian holidays; 

- 18 working days of vacation per a year; 

- Opportunity for professional growth and career development 

If this sounds interesting to you, let's talk!

About Flamingo

Flamingo is revolutionizing the Managed Service Provider (MSP) industry with an AI-driven, open-source platform for IT and security. Our goal is to empower MSPs with automation, optimization, and scalability tools to enhance their operations. 

Role Overview

As a Senior Back-end Engineer (Java) at Flamingo, you will design and develop scalable, high-performance back-end services and APIs using Java and Spring Boot. You will be responsible for implementing event-driven microservices, optimizing system performance, and ensuring high availability as we scale our platform. Your expertise in processing high-volume logs and integrating multiple data sources will be critical to building a robust and efficient system.

Key Responsibilities

• Design and develop scalable backend services and APIs using Java (Spring Boot).
• Architect and implement event-driven microservices with Kafka and RabbitMQ.
• Process and analyze high-volume logs efficiently to ensure scalability and real-time insights.
• Integrate and manage multiple data sources, including SQL, NoSQL, and streaming data.
• Optimize database performance using PostgreSQL, Redis, and Elasticsearch.
• Implement authentication and authorization mechanisms with OAuth, JWT, and Keycloak.
• Collaborate with front-end and DevOps teams to build a seamless and resilient system.
• Ensure code quality through automated testing, CI/CD pipelines, and best engineering practices.

Qualifications

Must-Have:

• 5+ years of experience in backend development with Java and Spring Boot.
• Experience in microservices architecture, including event-driven systems (Kafka, RabbitMQ).
• Strong knowledge of RESTful APIs, GraphQL, and WebSockets.
• Experience processing high-volume logs and working with log management tools (ELK stack, Loki, Fluentd, OpenTelemetry).
• Experience working with multiple data sources, including relational (PostgreSQL) and non-relational (Redis, Elasticsearch) databases
• Experience with containerization (Docker, Kubernetes) and cloud platforms (AWS/GCP).
• Understanding of security best practices in backend development.

Nice-to-Have:

• Experience with functional programming in Java or Scala.
• Familiarity with distributed tracing (e.g., Jaeger, Zipkin) for microservices.
• Knowledge of cloud-native architectures and serverless frameworks.
• Exposure to message queues and event sourcing.

Why Join Flamingo?

• High-impact role: As a back-end engineer, your contributions will directly shape Flamingo’s product and technology.
• Ownership & Equity: Competitive compensation, including significant equity in an early-stage, high-growth startup.
• Innovative Tech Stack: Work with cutting-edge open-source technologies in AI, automation, and security.
• Remote-first Culture: Flexibility to work from anywhere while collaborating with a top-tier team.
• Mission-Driven Company: Join a team passionate about disrupting the MSP industry and making enterprise-grade security and IT automation accessible to all.