Jobs Java

We are looking for a Senior or Lead Software Development Engineer to join a cloud data platform initiative focused on managed Kafka connectors. The role centers on accelerating onboarding of first-party connectors, improving reliability and launch readiness, and helping expand a managed connector ecosystem used in data-intensive cloud services.

Tasks

• Accelerate onboarding of new first-party managed Kafka connectors;
• Improve connector quality, reliability, and operational readiness;
• Integrate authentication and platform-specific cloud requirements;
• Translate connector behavior into implementation details, UI specs, and documentation inputs;
• Support launch gates such as probers, load testing, playbooks, and launch reviews.

Responsibilities

• Strong Java experience, as the core workers and connectors are implemented in Java;
• Practical Go experience for API-facing changes and service integration work;
• Practical experience with GCP cloud;
• Experience integrating, debugging, and improving connector-based or data integration systems;
• Ability to work across performance, stability, authentication, and network-compatibility concerns;

• Strong engineering ownership across delivery, launch readiness, and operational quality.

   

Nice to Have:

• Experience with Kafka Connect ecosystems;
• Experience with CDC-oriented connectors or sink/source integrations;

• Exposure to cloud data systems such as BigQuery, Spanner, Bigtable, Iceberg, or Debezium-based workflows.

   

Engagement Type

• B2B contract.

   

Location / Timezone

• Priority location is Krakow, Poland;
• On-site presence at the Akvelon office

We are looking for a Senior or Lead Software Development Engineer to join a cloud data platform initiative focused on managed Kafka connectors. The role centers on accelerating onboarding of first-party connectors, improving reliability and launch readiness, and helping expand a managed connector ecosystem used in data-intensive cloud services.

Tasks

• Accelerate onboarding of new first-party managed Kafka connectors;
• Improve connector quality, reliability, and operational readiness;
• Integrate authentication and platform-specific cloud requirements;
• Translate connector behavior into implementation details, UI specs, and documentation inputs;
• Support launch gates such as probers, load testing, playbooks, and launch reviews.

Responsibilities

• Strong Java experience, as the core workers and connectors are implemented in Java;
• Practical Go experience for API-facing changes and service integration work;
• Practical experience with GCP cloud;
• Experience integrating, debugging, and improving connector-based or data integration systems;
• Ability to work across performance, stability, authentication, and network-compatibility concerns;

• Strong engineering ownership across delivery, launch readiness, and operational quality.

   

Nice to Have:

• Experience with Kafka Connect ecosystems;
• Experience with CDC-oriented connectors or sink/source integrations;

• Exposure to cloud data systems such as BigQuery, Spanner, Bigtable, Iceberg, or Debezium-based workflows.

   

Engagement Type

• B2B contract.

   

Location / Timezone

• Priority location is Krakow, Poland;
• On-site presence at the Akvelon office

About the Company:

🌎 Akvelon is a USA-based software engineering and consulting company with offices across the USA, Poland, Ukraine, Serbia, and Mexico. We are an official vendor of Google and Microsoft and partner with Fortune 500 clients and global technology leaders.

At Akvelon, engineers work on large-scale cloud, AI, distributed systems, and enterprise platform projects used by millions of users worldwide.

Project Description:

We are hiring Senior Engineers for a strategic enterprise cloud data infrastructure project focused on expanding and improving the Managed Kafka Connect ecosystem.

The team is responsible for accelerating onboarding and productionization of first-party Kafka connectors for a large-scale managed streaming platform. Engineers will work on high-scale distributed data infrastructure, connector reliability, cloud integrations, CDC systems, and operational readiness.

Planned connectors include:

• Apache Iceberg Sink
• Debezium MySQL Source
• Debezium MongoDB Source
• SQL Server CDC Source
• Spanner CDC Source
• BigTable Sink
• BigQuery Sink improvements

The project includes:

• OSS connector integration
• Performance optimization
• Cloud authentication integration
• Reliability engineering
• Load testing
• Production readiness
• Kafka Connect ecosystem improvements

This engagement offers the opportunity to work on enterprise-scale distributed systems and modern cloud data infrastructure used by global technology platforms.

Responsibilities:

• Integrate and productionize Kafka Connect connectors
• Improve performance, scalability, and reliability of distributed data systems
• Optimize JVM applications and troubleshoot bottlenecks/OOM issues
• Work with Kafka Connect internals and connector lifecycle
• Implement cloud authentication and networking integrations
• Participate in operational readiness activities:
  • Load testing
  • Probers
  • Playbooks
  • Launch reviews
• Collaborate with distributed engineering teams
• Contribute to backend services written in Java and partially Go

Requirements:

Must Have:

• 5+ years of backend engineering experience
• Strong Java / JVM expertise
• Experience with performance tuning and troubleshooting
• Strong understanding of distributed systems
• Hands-on experience with Apache Kafka and Kafka Connect
• Experience debugging production infrastructure issues
• Experience with build systems and dependency management
• Experience with cloud infrastructure (preferably GCP)
• Upper-Intermediate+ English

Nice to Have:

• Apache Iceberg experience
• Debezium experience
• CDC systems knowledge
• Go backend development experience
• Kubernetes knowledge
• SRE / operational readiness background
• OSS contribution experience
• Experience with large-scale platform engineering

Working Conditions and Benefits:

• Paid vacation and sick leave
• Official state holidays — 9-11 public holidays per year
• Professional growth through challenging projects and the opportunity to master new technologies
• Flexible working schedule: 8 hours per day, 40 hours per week
• Personal Career Development Plan (CDP)
• Employee support programs (discounts, healthcare, legal assistance)
• Paid external training, conferences, and professional certifications aligned with business goals
• Internal workshops, seminars, and English classes
• Corporate library with paper and e-books

This position is not open to U.S.-based applicants.

Ready to work on distributed systems? Apply now and join our team.

About the Company:

🌎 Akvelon is a USA-based software engineering and consulting company with offices across the USA, Poland, Ukraine, Serbia, and Mexico. We are an official vendor of Google and Microsoft and partner with Fortune 500 clients and global technology leaders.

At Akvelon, engineers work on large-scale cloud, AI, distributed systems, and enterprise platform projects used by millions of users worldwide.

Project Description:

We are hiring Senior Engineers for a strategic enterprise cloud data infrastructure project focused on expanding and improving the Managed Kafka Connect ecosystem.

The team is responsible for accelerating onboarding and productionization of first-party Kafka connectors for a large-scale managed streaming platform. Engineers will work on high-scale distributed data infrastructure, connector reliability, cloud integrations, CDC systems, and operational readiness.

Planned connectors include:

• Apache Iceberg Sink
• Debezium MySQL Source
• Debezium MongoDB Source
• SQL Server CDC Source
• Spanner CDC Source
• BigTable Sink
• BigQuery Sink improvements

The project includes:

• OSS connector integration
• Performance optimization
• Cloud authentication integration
• Reliability engineering
• Load testing
• Production readiness
• Kafka Connect ecosystem improvements

This engagement offers the opportunity to work on enterprise-scale distributed systems and modern cloud data infrastructure used by global technology platforms.

Work from the office Poland, Krakow

Responsibilities:

• Integrate and productionize Kafka Connect connectors
• Improve performance, scalability, and reliability of distributed data systems
• Optimize JVM applications and troubleshoot bottlenecks/OOM issues
• Work with Kafka Connect internals and connector lifecycle
• Implement cloud authentication and networking integrations
• Participate in operational readiness activities:
  • Load testing
  • Probers
  • Playbooks
  • Launch reviews
• Collaborate with distributed engineering teams
• Contribute to backend services written in Java and partially Go

Requirements:

Must Have:

• 5+ years of backend engineering experience
• Strong Java / JVM expertise
• Experience with performance tuning and troubleshooting
• Strong understanding of distributed systems
• Hands-on experience with Apache Kafka and Kafka Connect
• Experience debugging production infrastructure issues
• Experience with build systems and dependency management
• Experience with cloud infrastructure (preferably GCP)
• Upper-Intermediate+ English

Nice to Have:

• Apache Iceberg experience
• Debezium experience
• CDC systems knowledge
• Go backend development experience
• Kubernetes knowledge
• SRE / operational readiness background
• OSS contribution experience
• Experience with large-scale platform engineering

Working Conditions and Benefits:

• Paid vacation and sick leave
• Official state holidays — 9-11 public holidays per year
• Professional growth through challenging projects and the opportunity to master new technologies
• Flexible working schedule: 8 hours per day, 40 hours per week
• Personal Career Development Plan (CDP)
• Employee support programs (discounts, healthcare, legal assistance)
• Paid external training, conferences, and professional certifications aligned with business goals
• Internal workshops, seminars, and English classes
• Corporate library with paper and e-books

This position is not open to U.S.-based applicants.

Ready to work on distributed systems? Apply now and join our team.

We are looking for a Senior or Lead Software Development Engineer to join a cloud data platform initiative focused on managed Kafka connectors. The role centers on accelerating onboarding of first-party connectors, improving reliability and launch readiness, and helping expand a managed connector ecosystem used in data-intensive cloud services.

Tasks

• Accelerate onboarding of new first-party managed Kafka connectors;
• Improve connector quality, reliability, and operational readiness;
• Integrate authentication and platform-specific cloud requirements;
• Translate connector behavior into implementation details, UI specs, and documentation inputs;
• Support launch gates such as probers, load testing, playbooks, and launch reviews.

Responsibilities

• Strong Java experience, as the core workers and connectors are implemented in Java;
• Practical Go experience for API-facing changes and service integration work;
• Practical experience with GCP cloud;
• Experience integrating, debugging, and improving connector-based or data integration systems;
• Ability to work across performance, stability, authentication, and network-compatibility concerns;

• Strong engineering ownership across delivery, launch readiness, and operational quality.

   

Nice to Have:

• Experience with Kafka Connect ecosystems;
• Experience with CDC-oriented connectors or sink/source integrations;

• Exposure to cloud data systems such as BigQuery, Spanner, Bigtable, Iceberg, or Debezium-based workflows.

   

Engagement Type

• B2B contract.

   

Location / Timezone

• Priority location is Krakow, Poland;
• On-site presence at the Akvelon office

We are looking for a Senior or Lead Software Development Engineer to join a cloud data platform initiative focused on managed Kafka connectors. The role centers on accelerating onboarding of first-party connectors, improving reliability and launch readiness, and helping expand a managed connector ecosystem used in data-intensive cloud services.

Tasks

• Accelerate onboarding of new first-party managed Kafka connectors;
• Improve connector quality, reliability, and operational readiness;
• Integrate authentication and platform-specific cloud requirements;
• Translate connector behavior into implementation details, UI specs, and documentation inputs;
• Support launch gates such as probers, load testing, playbooks, and launch reviews.

Responsibilities

• Strong Java experience, as the core workers and connectors are implemented in Java;
• Practical Go experience for API-facing changes and service integration work;
• Practical experience with GCP cloud;
• Experience integrating, debugging, and improving connector-based or data integration systems;
• Ability to work across performance, stability, authentication, and network-compatibility concerns;

• Strong engineering ownership across delivery, launch readiness, and operational quality.

   

Nice to Have:

• Experience with Kafka Connect ecosystems;
• Experience with CDC-oriented connectors or sink/source integrations;

• Exposure to cloud data systems such as BigQuery, Spanner, Bigtable, Iceberg, or Debezium-based workflows.

   

Engagement Type

• B2B contract or Business Incubator 

   

Location / Timezone

• Priority location is Krakow, Poland;
• On-site presence at the Akvelon office

Our Customer:

A product-focused organization developing innovative enterprise-grade solutions, with a strong emphasis on modern engineering practices, AI-driven development, and high-performance distributed systems.

Your tasks:

• Design, develop, and maintain full-stack applications using Java, Spring, Python, and React.
• Own the entire development lifecycle — from architecture and design to implementation, testing, and deployment.
• Work in an Extreme Programming (XP) environment with remote pair programming.
• Build scalable microservices-based systems using Spring Boot and related technologies.
• Develop responsive and reactive user interfaces using modern JavaScript frameworks.
• Apply TDD/BDD practices to ensure high-quality, maintainable code.
• Contribute to DevOps processes, including CI/CD pipelines and automation using Jenkins.
• Design and deploy cloud and hybrid solutions in containerized environments (Kubernetes, Cloud Foundry).
• Collaborate closely with cross-functional teams in a fast-paced, dynamic environment.
• Participate in building AI-driven features, including working with LLMs and prompt engineering.

Required experience and skills:

• 8+ years of experience in software development with strong expertise in Java and Spring.
• 2+ years of hands-on experience with Python.
• Experience working in microservices architecture (Spring Boot / Spring Cloud).
• Strong understanding of modern software design patterns (microservices, service discovery, circuit breaker).
• Hands-on experience with TDD/BDD frameworks (Junit, Jasmin, Mockito, Protractor/Selenium).
• Experience with DevOps practices and tools, including Jenkins.
• Experience with containerization and orchestration (Kubernetes, Cloud Foundry).
• Experience building and deploying cloud or hybrid solutions.
• Experience with functional programming and Java Streams.
• Experience with reactive UI development.
• Hands-on experience with Claude.code.
• Upper-Intermediate or higher level of English.

Would be a plus:

• Frontend development experience, primarily with React.
• Experience with data analytics or data-driven systems.
• Knowledge of Kotlin.

We are looking for an Advanced Software Engineer Java who is passionate about technology, development and deployment of a SaaS product.

Innovecs is a global digital transformation tech company with a presence in the US, the UK, the EU, Israel, Australia, and Ukraine. Specializing in software solutions, the Innovecs team has experience in Supply Chain, Healthtech, Software & Hightech, and Gaming.
For the fifth year in a row, Innovecs is included in the Inc. 5000 and recognized in IAOP’s ranking of the best global outsourcing service providers. Innovecs is featured in the Global Top 100 Inspiring Workplaces Ranking and won gold at the Employer Brand Management Awards.

Our value to you: 

• Flexible hours and remote-first mode
• Competitive compensation
• Complete Hardware/Software setup – anything you need for work
• Open-door culture, transparent communication, and top management at a handshake distance
• Health insurance, vacation, sick leaves, holidays, paid maternity/paternity leave
• Access to our learning & development center: workshops, webinars, training platform, and edutainment events
• Virtual team buildings and social activities 

If you feel like you’re the perfect match for this role, drop us your CV! 

There are no limitations, no barriers when the right people are on your way — apply for the vacancy and succeed with us

Innovecs is an equal opportunity employer. All hiring decisions are based on professional qualifications, skills, and experience. We are committed to a transparent, merit-based recruitment process that prevents discrimination and ensures equal opportunities for all candidates. Reasonable accommodations are available upon request throughout the recruitment process to support accessibility and inclusion.

Requirements

• At least 7+ years of experience in java server-side, and must have deep understanding of reactive systems experience in areas: java concurrent programming, java security, reactive programming, network programming and mechanical sympathy understanding,
• Knowledge of programming patterns and design principles which and solving complex problems using algorithms,
• Experience in low latency / high-throughput algorithms,
• Experience in building large-scale, multi-tenant mission-critical systems,
• Understanding of transport protocols and formats: WebSocket, Google Protocol Buffers, Json, SBE,
• Background with the Fin-Tech industry - big advantage,
• Experience with ultra-low-latency systems - big advantage,
• Experience with Aeron technology - MUST,
• Learn and Contribute to open source projects - big advantage,
• Familiarity with microservices architecture - advantage,
• Experience with cloud and bare-metal environments - advantage,
• Experience with Kubernetes - advantage,
• Experience at working with distributed remote teams,
• Passion Curiosity to constantly learn and improve,
• Passion to help the team members to learn,
• Fluent Verbal and Written English Skills required,
• Self-learning enthusiasm,
• Taking ownership and responsibility,
• Communicative and transparent,

• Team Player.

   

Responsibilities

• Be part of an agile team, the core technological team to build and advance a low latency / high-throughput trading platform,
• Participate in all aspects of the development and influence foundation for a system affecting a huge market,
• Lead features from design to production,
• Take active part of Teamwork and team spirit, share and learn from each other,
• Take part in a deep tech product development,
• Take part in influencing the evolution of exberry architecture,
• Take part in influencing product development and growth,
• Take part in ever improving the product delivery life-cycle,
• Help the agile team meet its goals.

We are looking for an experienced Senior Java Full Stack Engineer 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
   

Requirements:

• BS degree in Computer Science or equivalent combination of education and experience
• 5-6+ years of full-stack development
• 5-6+ years of experience in the following technologies: Java, Spring
• Experience with Functional Programming and Java Streams
• 2+ years of experience in front-end development with React
• Experience with developing a reactive UI (Reactive JS)
• 2+ years of experience in TDD/BDD development in the following frameworks: Junit, Jasmin, Mockito, Protractor/Selenium
• 2+ years of experience in micro-services-based architecture and tools (Spring Boot/Cloud)
• Experience in DevOps development and Jenkins
• Experience in development in Kotlin – an advantage
• Experience in designing, developing, and deploying cloud/hybrid-based solutions
• Experience in developing and deploying in container-based environments (Kubernetes, Cloud Foundry)
• Familiarity with the following design concepts: micro-services, service discovery, circuit breaker
• Self-starter with the ability to appropriately 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
• Good English - verbal and written