Jobs Java

Domain: Banking & Finance
Experience: 6+ years
Project Duration: June 1, 2026 – December 31, 2026
Format: Hybrid
Location: Kraków, Poland

About the Project

We are looking for a Backend Software Engineer / Java Developer to join a team building modern enterprise-scale digital solutions for an international financial services company.

This role is a great fit for someone who enjoys hands-on backend development, designing scalable APIs, and working in a fast-paced international engineering environment.

Responsibilities

• Develop, maintain, and enhance backend applications using Java
• Design and support scalable REST APIs and microservices
• Collaborate with product owners, architects, and developers to deliver new features and improvements
• Contribute to the design of secure, reliable, and high-performing systems
• Work within Agile teams and participate in CI/CD-driven delivery processes
• Perform code reviews and contribute to automated testing practices
• Support production environments and troubleshoot issues when necessary
• Drive improvements in development standards, tooling, and code quality

Requirements

• Strong commercial experience with Java (8, 11, or 17+)
• Solid expertise with Spring and Spring Boot
• Hands-on experience building RESTful services and microservices-based systems
• Experience with SQL databases such as PostgreSQL or Oracle
• Familiarity with Git, CI/CD pipelines, and build tools like Maven or Gradle
• Experience working in Agile or DevOps environments
• Strong English communication skills

Nice to Have

• Experience with cloud platforms such as AWS, GCP, or Azure
• Knowledge of Docker and Kubernetes
• Familiarity with messaging and event-streaming technologies such as Kafka or MQ
• Previous experience in banking, financial services, or other regulated industries

Tech Stack

• Java
• Spring / Spring Boot
• REST APIs
• SQL
• PostgreSQL
• Oracle
• Git
• CI/CD
• Maven / Gradle

Nice to Have Technologies

• Cloud platforms
• Docker
• Kubernetes
• Kafka
• MQ

Location

• Hybrid from Kraków, Poland
• Important: the client requires office visits in Kraków approximately 6 times per month

Recruitment Process

• Technical interview with an external partner
• 1.5-hour technical interview with the end client
• Cultural fit interview

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

Important: after confirming your application on this platform, you’ll receive an email with the next step: completing your application on our internal site, LaunchPod. So keep an eye on your inbox and don’t miss this step — without it, the process can’t move forward.

Why join us

If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you! :)

About the role

We are looking for a Senior Backend Engineer to lead a critical migration from a monolithic database to multiple domain-specific data stores within Google Cloud Platform. You will design and implement data operations including backfills, data mapping, and Change Data Capture using GCP Datastream and Dataflow, working in Kotlin or Java. The role prioritizes demonstrated expertise in large-scale data migration over specific language fluency.

What you will do

• Drive the migration from a single monolithic database to multiple domain-specific data stores within the Google Cloud Platform;
• Implement solutions for complex data operations, including one-time backfills, data mapping, filtering, and ongoing Change Data Capture to propagate data changes;

• Leverage expertise in GCP technologies, specifically Datastream and Dataflow.

   

Must haves

• 6+ years of professional experience, ideally at a Senior or Lead level;
• Demonstrated deep expertise in data migration;
• Extensive experience with Google Cloud Platform (GCP) data services, especially Datastream and Dataflow;
• Proficiency in a modern programming language, such as Kotlin or Java;
• Upper-intermediate English level.

Nice to haves

• Experience with artificial intelligence (AI) to help optimize data workflows.

The benefits of joining us

• Professional growth

Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps

• Competitive compensation

We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities

• A selection of exciting projects

Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands

• Flextime

Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office – whatever makes you the happiest and most productive.

Meet Our Recruitment Process

Asynchronous stage – An automated, self-paced track that helps us move faster and give you quicker feedback:

• Short online form to confirm basic requirements
• 30–60 minute skills assessment via Codility – a platform founded in Poland that helps us provide quicker feedback and streamline this stage of the process.
• 5-minute introduction video

Synchronous stage – Live interviews

• Technical interview with our engineering team (scheduled at your convenience)
• Final interview with your future teammates

If it’s a match — you’ll get an offer!

The Mission

Wallee Group is a leader in advanced payment solutions, dedicated to providing robust, scalable, and secure systems across multiple domains. We enhance customer experiences through innovative payment and finance technology that empowers businesses to grow efficiently. With operations spanning several countries, we thrive on collaboration and agility, utilizing the Scrum framework to drive our international teams. At Wallee, we stay at the forefront of market trends, continuously innovating to deliver premier services to our global customers.

The Role

To achieve our mission of providing the market's best payment experience, Wallee is seeking experienced and versatile java software engineers for our Vilnius office. As disruptors in the payment space, we build industry-leading systems that demand the highest standards of security and reliability. We are constantly pushing our solutions into new territories, and we are looking for engineers who thrive in a fast-paced, agile environment to help us redefine the future of finance.

Tasks

Your Impact

• Architect Scalability: Design and develop highly resilient back-end systems using Java, ensuring our infrastructure handles global scale with ease.
• Feature Innovation: Own the end-to-end lifecycle of new features, from initial implementation to refined bug fixing and performance tuning.
• Collaborative Engineering: Work closely with product managers, UX designers, and QA to translate complex business needs into elegant technical solutions.
• Code Excellence: Drive quality through automated testing, rigorous code reviews, and the creation of clear, maintainable technical documentation.
• Stay Ahead: Continuously research and evaluate emerging technologies and methodologies to keep Wallee at the cutting edge of the fintech industry.

Requirements

What You Bring to the Table

• Technical Depth: Advanced proficiency in Java and core frameworks such as Spring, Spring Boot, and Hibernate.
• Systems Thinking: Proven experience building distributed systems and scalable, high-availability solutions.
• Data Mastery: Strong proficiency in SQL and experience managing complex data structures.
• Modern DevOps: Hands-on experience with CI/CD pipelines (Jenkins/GitLab CI) and containerization (Docker, AWS ECS).
• Agile Mindset: A degree in Computer Science (or equivalent experience) and a track record of thriving in fast-paced, Agile environments.

• Bonus Points: Experience with JavaScript, Apache Camel, or BPM engines.

   

  Benefits:

• You are part of an agile, young international team and shape our products sustainably with your ideas.
• You will play a decisive role in designing products in an omni channel payment start-up and work with leading companies in the financial industry on international projects.
• We offer flexible structures and flat hierarchies.
• Cooperation with motivated colleagues and numerous personal development opportunities.

Our client is a global leader in infrastructure software, specializing in enterprise API management and digital integration.

They are looking for a strong Senior Java Developer to help build and scale a cloud-native platform powering modern API ecosystems.

About the Position:

We are hiring a Senior Java Developer to contribute to the design and development of a high-load, distributed platform focused on API orchestration and integration.

You’ll work on microservices, cloud infrastructure, and platform components, while collaborating with cross-functional teams and mentoring junior engineers.

Working Hours:

Aligned with Ireland timezone (GMT/IST)

Responsibilities:

• Design and develop backend services and APIs using Java
• Build and enhance microservices and platform components (API gateways, data layers)
• Contribute to architecture decisions and system design
• Work within Kubernetes and containerized environments
• Ensure code quality, testing, and best engineering practices
• Collaborate with QA/SDETs on test automation and coverage
• Participate in code reviews and technical discussions
• Monitor system performance using observability tools (Prometheus, Grafana, OpenTelemetry)
• Identify bottlenecks and optimize system performance and scalability
• Mentor junior engineers and support team growth

Requirements:

• 5+ years of experience in backend/platform engineering
• Strong proficiency in Java (mandatory)
• Experience with distributed systems and microservices
• Solid understanding of:
  • Multithreading, memory management, performance tuning
  • API design (REST, gRPC) and integration patterns
• Hands-on experience with:
  • Redis/Valkey, MongoDB, PostgreSQL
  • Kubernetes and containerization
  • Cloud-native environments
• Experience with monitoring & observability tools
• Strong debugging, problem-solving, and communication skills
• Experience working in Agile teams
• Mentoring experience is a plus

Benefits:

• 100% Remote
• Competitive USD compensation
• Flexible working hours
• Home office setup provided
• Work in a global, product-driven environment

Join the team and build scalable systems powering modern digital ecosystems!

TJHelpers is committed to developing strong engineering teams through mentorship, real project experience, and our “Helpers as a Service” model. We provide structured growth, hands-on practice, and a supportive environment where engineers can evolve quickly and meaningfully.

We are looking for a Senior Java Developer (Technical Consultant) to join our team and help build scalable, high-performance backend systems for fintech, AI, telecommunications, healthcare, and other high-load domains.

This role combines hands-on backend development with participation in architecture design, technical planning, and a consulting-driven approach to building reliable, scalable, and maintainable systems.

Responsibilities

• Design and develop scalable backend services and microservices using Java 17/21, Spring Boot, and Spring Cloud 
• Participate in architecture design, technical planning, and engineering decision-making 
• Build event-driven systems using Kafka or RabbitMQ and develop REST or GraphQL integrations 
• Improve system performance, scalability, reliability, and maintainability 
• Optimize application performance, database interactions, and backend processing flows 
• Collaborate closely with DevOps, QA, product, and engineering teams 
• Participate in code reviews and contribute to engineering best practices 
• Diagnose and resolve issues in production environments 
• Participate in technical discussions with clients and stakeholders when needed 
• Provide technical guidance, architectural recommendations, and mentorship 

Requirements

• Strong commercial experience with Java and Spring Boot/Spring Cloud 
• Strong experience designing and building microservices, REST APIs, and distributed systems 
• Strong understanding of software architecture principles and integration patterns 
• Experience with PostgreSQL or MySQL and Hibernate/JPA 
• Experience with Kafka, RabbitMQ, or other messaging systems 
• Experience optimizing application performance, scalability, and database interactions 
• Experience with Docker and CI/CD pipelines 
• Experience with at least one cloud platform such as AWS, GCP, or Azure 
• Strong debugging, troubleshooting, and problem-solving skills 
• Ownership mindset and responsibility for technical solutions and delivery quality 
• Ability to communicate technical decisions clearly to both technical and non-technical stakeholders 

Nice to Have

• Experience with Redis, Elasticsearch, or GraphQL 
• Knowledge of Kubernetes or Terraform 
• Experience working with high-load systems, caching, and observability tools such as Prometheus, Grafana, or ELK 
• Familiarity with event-driven architecture and asynchronous communication patterns 
• Experience participating in technical consulting, solution design, or system modernization initiatives  

What We Offer

• Work on real-world projects in fintech, AI, telecommunications, healthcare, and other modern domains 
• Opportunity to influence architecture and technical decisions 
• Clear growth path toward Tech Lead or Architect roles 
• Open engineering culture with transparent processes and strong technical collaboration 
• Flexible schedule and fully remote work opportunities

TJHelpers is committed to developing strong engineering teams through mentorship, real project experience, and our “Helpers as a Service” model. We provide structured growth, hands-on practice, and a supportive environment where engineers can evolve quickly and meaningfully.

We are looking for a Java Developer to join our backend team and contribute to building scalable, high-performance, and reliable microservices for modern products across fintech, AI, telecom, healthcare, and other high-load domains.

Responsibilities

• Design, develop, and maintain scalable backend microservices and APIs.
• Write clean, efficient, and well-tested code using Java (17/21) and Spring Boot.
• Work with event-driven architectures using tools like Kafka or RabbitMQ.
• Integrate with internal and external REST/GraphQL services.
• Collaborate closely with DevOps, QA, and product teams to deliver high-quality features.
• Participate in code reviews and help establish engineering best practices.
• Optimize backend systems for performance, reliability, and cost efficiency.

• Investigate and resolve production issues, contributing to CI/CD and observability improvements.

   

Requirements

• Strong knowledge of Java and hands-on experience with Spring Boot / Spring Cloud.
• Experience building REST APIs, microservices, and integrations.
• Solid understanding of relational databases (PostgreSQL/MySQL) and ORM frameworks (Hibernate/JPA).
• Familiarity with Docker, containerization, and CI/CD pipelines.
• Knowledge of software architecture principles: microservices, event-driven systems, clean architecture.
• Experience with Git, unit testing (JUnit), and debugging/profiling tools.

• Good problem-solving skills and ability to work in a fast-paced environment.

   

Nice to Have

• Experience with cloud platforms (AWS, GCP, Azure).
• Knowledge of Kafka, Redis, Elasticsearch, or GraphQL.
• Experience with Kubernetes, Helm, or Terraform.
• Understanding of caching strategies, messaging patterns, and high-load system design.
• Experience with performance tuning, monitoring (Prometheus/Grafana), and observability tools (ELK).

• Familiarity with ML/AI integrations or data pipelines.

   

We Offer

• Real-world projects in fintech, AI, telecom, and automation industries.
• Mentorship from senior engineers, tech leads, and architects.
• Personal development plan and a clear path toward Senior Java Engineer or Backend Architect roles.
• Access to internal workshops, best practices, and structured feedback.
• A collaborative engineering culture focused on transparency and continuous improvement.
• Long-term projects, flexible schedule, and a remote-friendly work environment.

We are looking for a motivated individual to join our small team and work on various projects focusing on: e-commerce development and Spring Boot programming.

You will be working closely with the Team Lead, who will also serve as your mentor. He will always be available to assist you and answer your questions, but will also require high-quality and timely execution of tasks.

📝 Key Requirements & Details

• Position: Junior Java Developer (Remote)
• Technologies: Java, Spring Boot, SQL, JPA, MongoDB
• English Level: Intermediate (B1/B2)
• Mandatory Languages: Ukrainian or Russian is required.
• Work Schedule: 10:00 AM – 7:00 PM Kyiv time (EET)
• Location: Remote
• Experience: We are considering candidates with work experience (not necessarily commercial).
• Test Assignment: A mandatory test assignment will be provided after the initial introduction (you will have two days for completion).
• Salary: $500/month, paid twice a month via a convenient method for you (crypto, bank card, or other options).
   

We are interested in long-term cooperation.

TJHelpers is committed to developing strong engineering teams through mentorship, real project experience, and our “Helpers as a Service” model. We provide structured growth, hands-on practice, and a supportive environment where engineers can evolve quickly and meaningfully.

We are looking for a Java Developer to join our backend team in our Odesa office, located in the Primorskyi District.

You will contribute to building scalable, high-performance, and reliable microservices for modern products across fintech, AI, telecom, healthcare, and other high-load domains.

Responsibilities

• Design, develop, and maintain scalable backend microservices and APIs.
• Write clean, efficient, and well-tested code using Java (17/21) and Spring Boot.
• Work with event-driven architectures using tools like Kafka or RabbitMQ.
• Integrate with internal and external REST/GraphQL services.
• Collaborate closely with DevOps, QA, and product teams to deliver high-quality features.
• Participate in code reviews and help establish engineering best practices.
• Optimize backend systems for performance, reliability, and cost efficiency.

• Investigate and resolve production issues, contributing to CI/CD and observability improvements.

   

Requirements

• Strong knowledge of Java and hands-on experience with Spring Boot / Spring Cloud.
• Experience building REST APIs, microservices, and integrations.
• Solid understanding of relational databases (PostgreSQL/MySQL) and ORM frameworks (Hibernate/JPA).
• Familiarity with Docker, containerization, and CI/CD pipelines.
• Knowledge of software architecture principles: microservices, event-driven systems, clean architecture.
• Experience with Git, unit testing (JUnit), and debugging/profiling tools.

• Good problem-solving skills and ability to work in a fast-paced environment.

   

Nice to Have

• Experience with cloud platforms (AWS, GCP, Azure).
• Knowledge of Kafka, Redis, Elasticsearch, or GraphQL.
• Experience with Kubernetes, Helm, or Terraform.
• Understanding of caching strategies, messaging patterns, and high-load system design.
• Experience with performance tuning, monitoring (Prometheus/Grafana), and observability tools (ELK).

• Familiarity with ML/AI integrations or data pipelines.

   

We Offer

• Real-world projects in fintech, AI, telecom, and automation industries.
• Mentorship from senior engineers, tech leads, and architects.
• Personal development plan and a clear path toward Senior Java Engineer or Backend Architect roles.
• Access to internal workshops, best practices, and structured feedback.
• A collaborative engineering culture focused on transparency and continuous improvement.
• Long-term projects, flexible schedule, and a remote-friendly work environment.

• 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
  • 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:

  At least 5-10 years of experience
  GIS Java Eclipse
  ESRI ArcGIS Runtime
  ESRI Services and Authentication

Pivdenny Bank is one of the leaders in the Ukrainian financial market and ranks third in the group of Ukrainian private banks in terms of assets. For 32 years, Pivdenny has been a reliable financial partner for individuals, small and medium enterprises, and corporations.

More than 1700 active and dedicated employees work for Pivdenny throughout Ukraine. For four years in a row, the bank has been included in the Forbes 50 Best Employers rating.

We are now looking for a Senior Backend Developer to join our team.

Responsibilities:

• Develop of integration applications on the IBM App Connect Enterprise integration bus in accordance with the current tasks of the department;
• Participate in the design of microservices and their databases;
• Implement unit and integration tests;
• Develop new features and make updates of existent microservices on a daily-basis;
• Write clean, testable, maintainable code, and continue to grow development skills;
• Perform requirement analysis and features estimation;
• Prepare API documentation of microservices;
• Share knowledge of the project with team members.
   

Requirements:

• BS or MS in Computer Science or related field;
• 5+ years of commercial experience in Java;
•  Experience with IBM App Connect Enterprise;
• Good understanding of OOP principles, OOP design, and design patterns;
• Good understanding of microservices architectural principles and experience in the development of RESTful applications and microservices;
• Good practical experience with Java 11+, Spring 5+ / Spring Boot 2+ (Data JPA/Hibernate, Security, Cloud), JUnit 5, Mockito, Testcontainers, Kafka / RabbitMQ;
• Experience with Git, Maven, Docker / Docker compose;
• Good knowledge and practical experience with SQL and relational database.

What we offer:

• Health insurance;
• Competitive salary;
• Work in a functional, comfortable office or remotely;
• Corporate psychologist;
• Opportunity for career growth and development;
• Opportunity to take courses and training;
• Opportunity to work in a stable and professional company with a friendly team.

We review resumes within 14 days. If you do not hear from us, it means that we cannot offer you a position at this time, but we have kept your resume in our database. We will contact you when we have a suitable opportunity.

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

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

You will be good match if:

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

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

- You have experience working in US fintech domain 

We will be good match if:

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

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

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

Requirements:

- 6+ years of experience developing web applications

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

- TDD experience in production is a must have

- Experienced in pair programming

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

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

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

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

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

- Strong Agile/Scrum/Kanban development experience

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

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

Our technical Stack:

- Java 25

- Microservices (Quarkus)

- Postgresql/MySQL

- Kafka

- Keycloak

- Kubernetes & Docker

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

- Gradle

- Bitbucket pipelines, gitops approach

- Lombok, MapStruct, Flyway

We offer:

- Innovative product with modern technology stack

- Competitive salary (paid in $)

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

- PE accounting and support

- WFH and remote working mode possibility, Ukrainian working hours

- No bureaucracy, micromanagement and time-tracking

About Us

Smart Capital Center is an end-to-end, AI-powered platform for Commercial Real Estate (CRE) investment and financial management. We power real-time underwriting, asset management, and portfolio analytics through a combination of live data, workflow automation, and AI-driven insights.

Operating at the intersection of Generative AI, finance, and real estate, we are building systems that digitize and simplify complex financial workflows.

Our clients include leading institutions such as JLL, Pacific Life Insurance Company, and KeyBank. We are a lean, high-performance team building category-defining technology in a $17 trillion industry.

To learn more about our platform and vision, please visit our website.

The Role

We are looking for a Backend Software Engineer with strong experience in building scalable systems and a deep interest in AI-powered applications.

This is a high-impact, hands-on role where you will design and build backend services, integrate AI capabilities, and develop intelligent, agent-driven workflows used in real-world production environments.

You will work closely with product, AI, and engineering teams to deliver reliable, high-performance systems and automation features.

What You Will Do

Backend Development

• Design, build, and maintain backend services using Java (Spring Boot) and Python
• Develop scalable APIs and microservices for data-intensive applications
• Optimize system performance, reliability, and scalability
• Design efficient data models and handle complex integrations

AI & Intelligent Systems

• Implement and integrate AI-powered features into core products
• Design and build agent-based workflows for automation and decision-making
• Apply prompt engineering techniques to improve LLM outputs and behavior
• Work with modern AI frameworks to productionize intelligent systems

Cloud & Infrastructure

• Develop and deploy backend systems on AWS (EC2, S3, RDS, Lambda, etc.)
• Build resilient, scalable cloud-native services
• Contribute to system monitoring, logging, and reliability

System Design & Engineering Excellence

• Contribute to architecture, service boundaries, and system design decisions
• Write clean, maintainable, and well-documented code
• Ensure security, performance, and operational stability
• Continuously improve engineering quality and development practices

Collaboration

• Work closely with frontend, product, and AI teams
• Contribute to end-to-end feature delivery
• Participate in Agile development processes

Requirements

• 5+ years of backend software development experience
• Strong experience building and scaling backend systems in production

Core Technical Skills

• Strong experience with Java and Spring Boot
• Solid experience with Python
• Strong knowledge of SQL and database design (PostgreSQL preferred)
• Experience building REST APIs, microservices, and distributed systems
• Hands-on experience with AWS (EC2, S3, RDS, Lambda, etc.)
• Proficiency with Git and modern development workflows

AI & Modern Development Experience

• Experience with prompt engineering for LLM-based systems
• Practical experience building AI agent workflows in production
• Familiarity with frameworks/tools such as:
  • LangGraph
  • LangChain
  • LangSmith
  • or similar ecosystems
• Experience using AI-assisted development tools, such as:
  • Claude Code
  • Codex
  • OpenCode
  • or similar

Nice to Have

• Experience with vector databases or semantic search (e.g., Milvus)
• Knowledge of RAG (Retrieval-Augmented Generation) architectures
• Experience with CI/CD pipelines and DevOps practices
• Familiarity with event-driven architecture

• Experience with data processing pipelines or document AI systems

   

Why Join Us

• Work on cutting-edge AI-powered systems in a $17T industry
• Build real-world applications using LLMs, agents, and automation
• High ownership and autonomy with meaningful technical impact
• Opportunity to influence system design and engineering direction
• Fast-moving, execution-focused team with minimal bureaucracy
• Competitive compensation and flexible work environment

Ми шукаємо досвідченого Software Engineer для роботи на проекті локального телеком-оператора.

Основні вимоги:

• Вища технічна освіта
• Досвід розробки в комерційних проектах від 3х років
• Досвіду управління проектами, командами або процесами розробки не менше року
• Знання та досвід використання:
  o Java programming language (Java17, Concurrency, Parallel, Distributed)
  o web applications development (REST/JSON/XML)
  o NoSQL / Cassandra DB, досвід роботи з MariaDB, Oracle DB, розуміння принципів побудови реляційних / нереляційних баз даних, знання SQL
• Знання та досвід використання й побудови CI/CD processes, досвід роботи з Maven, Gradle, JUnit, CI/CD tools
• Знання та досвід роботи з Spring Framework (MVC, Boot, Security), Akka (HTTP, Streams), Distributed cache Framework, Hibernate, Kafka, ArtemisMQ, Hazelcast
• Досвід використання agile software development methodologies, принципівSDLC, Scrum, Kanban, XP, WF
• Знання та досвід використання microservices, monolith, soa, design patterns
• Досвід роботи з:
  o Docker stack 
  o Grafana, ELK Stack, Artifactory 
  o OS RedHat linux (CentOS/Fedora/Oracle Linux) 

• Рівень англійської мови - intermediate level або вищий

   

Буде перевагою:

• Досвід роботи з Kubernetes, Cloud (AWS)
• Досвід написання технічної документації
• Досвід виконання технічної підтримки
• Досвід роботи в області телекомунікацій, архітектури білінгових та vas (value added services) систем, базові знання принципів

Delasport is an iGaming Software company providing Sports Betting & Online Casino software, and turnkey B2B solutions. Established in 2010, Delasport delivers a one-stop-shop solution of Sports Betting and Online Casino from a White-Label, with a full range of management services to a Plug&Play iFrame and a complete Turnkey. We are establishing an R&D centre in Kyiv, and are looking for top talents to join our team.

TECHNOLOGY STACK

Microservice architecture, Java 21, Spring Boot 3.4+, PostgreSQL, MongoDB, Kafka, Google Cloud Platform, Kubernetes

RESPONSIBILITIES

• Development of new business initiatives, an extension of existing ones
• Taking an active part in improvements and optimizations to the systems
• Resolve technical problems, critical thinking on the development approach
• Be part of a cross-functional team with end-to-end responsibility for the result

REQUIREMENTS

• 3+ years of commercial development experience using Java-related technologies
• 1+ years of working experience with API development
• Hands-on experience with microservice architecture
• Ambition to write high-quality code covered with unit tests
• Solid debugging and troubleshooting skills
• Proactive and result-oriented mindset
• Strong problem-solving skills
• At least Upper-Intermediate English level

WHAT WE CAN OFFER YOU

• Modern office in Podil with an uninterruptible power supply and the Internet
• Personal time off (21 business days of paid vacation, paid days on special occasions, sick leaves, emergency days off)
• Public holidays
• Health and life insurance with our broker, available starting from the month following the employee’s start date with the company
• Modern technical equipment
• English courses with native speakers
• Ukraine-based educational programs
• Sports activities reimbursement
• Corporate entertainments
• Happy hours on Fridays
• Gig contract support