Jobs Java

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

About the client

A United States-based data company that builds analytical data platforms for large enterprises, with a particular focus on the construction and engineering sectors. The company has roughly 20 years of experience delivering large-scale enterprise data projects and counts Fortune 100 companies among its customers.

The role

We are hiring a senior full stack developer (Java + React) to lead the build of a new data platform. You will start by delivering the MVP from an existing set of requirements, then continue building features and custom work as the product matures.

The central part of this platform is AI. We are building agentic tools that carry out automated tasks such as generating reports and running analyses, so working with large language models is core to the role rather than an afterthought.

This is a hands-on senior position with real architectural ownership. You will be making key technical decisions, not just implementing someone else’s.

What you will do

• Design the architecture and the data model. Plan the overall system: services, APIs, and the analytical data stores behind them.
• Build the data foundation. Design Data Lakes and analytical stores, and build ETL pipelines that ingest, clean, transform, and structure large volumes of data, so it is ready for analysis.
• Build AI-powered features. Integrate large language models and develop agentic tools that automate work such as reporting, data analysis, and other repetitive tasks, with sensible safeguards around company data.
• Deliver the MVP and grow it. Own delivery from end to end, then keep evolving the product with new and custom features.
• Integrate with industry tools. Build pipelines that connect to scheduling and project-control systems such as Oracle Primavera P6.
• Write full stack code. Back-end services and front-end interfaces, both clean and tested. You are welcome to use AI coding assistants to work faster, provided you keep company data secure.
• Own the database and cloud setup. Database design and tuning on Azure SQL, and the application infrastructure on Microsoft Azure.
• Translate requirements. Work with the product managers and customers to turn business needs into clear technical specifications.
• Support the team. Set coding standards and help guide a small engineering team based in Ukraine.

Who you will work with

• On the client side: CEO, PM, 2 Data Analysts, Delivery Lead, 2 Data Engineers, and a BA.
• On our side: 1 Senior Full Stack Developer, 2 Middle Java Developers, and 1 DevOps engineer.
• Customers across North America, Europe, and the MENA region.

What we are looking for

• At least 7 years of building software, with experience building architecture from scratch (3 years or more).
• Hands-on experience integrating large language models into real applications, and an interest in building agentic, automated tooling. (This is a must.)
• Strong Java (25) and the Spring ecosystem (Spring Boot 4, Spring Cloud, Spring Security).
• Solid React (19) and a good command of web fundamentals (HTML, CSS, the DOM).
• Deep, proven experience with Data Lakes, ETL, and transforming large datasets for analysis.
• Hands-on experience deploying applications on Microsoft Azure (AWS/GCP) and working with Azure SQL (design, performance tuning, and scaling).
• Comfortable with microservices, REST API design, event-driven architecture, and containers (Docker, Kubernetes/AKS).
• Familiarity with CI/CD using Azure DevOps, GitHub Actions, or similar tools.
• A practical, product-minded approach. You treat code as a way to solve user problems.
• Direct experience with Oracle Primavera P6.
   
• English: Upper-intermediate (strong communication skills)

Nice to have

• Experience building software for the construction, engineering, or property-technology sectors. This is a genuine plus, but it is not required — the domain can be picked up quickly, and we would rather hire a strong engineer with potential than screen people out over industry background.

Why it is worth it

• You will be the key founding engineer on a brand-new product, so your decisions will genuinely shape it.
• You will work closely with experienced product leaders and a capable DevOps team.
• There is room to grow as the platform grows.

We Offer

• Opportunity to propose solutions and influence technical decisions
• Dynamic and challenging tasks
• Team of experienced professionals
• Competitive salary
• Low bureaucracy
• Continuous self-improvement
• Long-term employment with paid vacation and social benefits
• A bunch of perks 😊

• Project Description:

  A next-generation cross-asset data management platform to provide globally consistent data and innovative tools to support business strategy for trade/sales clients, which is built on big data architecture, highly scalable, and cloud-ready. The platform enables industry-leading analytics, client reporting, regulatory compliance, surveillance, supervisory reporting, and data science solutions (data flame). The project tech stack: Java, Scala, Spring, SQL, Kafka, Hadoop.
  
  We are looking for a strong Senior Java Developer capable of being able to work within the team, being a mentor for team members, communicating with stakeholders, and being accountable for the outcomes of activities that are assigned.
  
  The role of the involves working with strong development teams (2 Senior Java Developers), the opportunity to work with big data, improving knowledge in this domain, and utilizing the resources of an international bank.

   

• Responsibilities:

  • Design and build frameworks for ingesting/modeling the complex Risk data
  • Develop Low latency caching to service Front office risk systems
  • Setup monitoring and management for services
  • Provide SME support for development of automated QA scripts
   

• Mandatory Skills Description:

  • Strong knowledge of Big Data technologies Hadoop Ecosystem (HDFS, Impala, HIVE, HBASE, etc.) and Apache Spark
  • At least 5 years of experience in software development, including professional backend software development experience;
  • Strong Knowledge of Java programming languages
  • Should be familiar with algorithms and design patterns
  • Familiarity with Linux environment, including scripting skills
  • Designing and building APIs (Java);
  • Java Server-side or Back-end development;
  • Core Java;
  • Java collections and multithreading;
  • Java Memory Management;
  • Database and SQL (writing stored procedures, designing table schemas).
  • Understanding of distributed systems.
  • Understanding of CI/CD workflow.
  
  • Ability to multi-task and work under pressure.
  • Ability to pick up new concepts and apply the knowledge.
  • Demonstrated problem-solving skills.
  • Enthusiastic and proactive approach with a willingness to learn.
  • The candidate is expected to be dynamic and flexible with a high energy level as this is a demanding and rapidly changing environment

A next-generation cross-asset data management platform to provide globally consistent data and innovative tools to support business strategy for trade/sales clients, which is built on big data architecture, highly scalable, and cloud-ready. The platform enables industry-leading analytics, client reporting, regulatory compliance, surveillance, supervisory reporting, and data science solutions (data flame). The project tech stack: Java, Scala, Spring, SQL, Kafka, Hadoop.

We are looking for a strong Senior Java Developer capable of being able to work within the team, being a mentor for team members, communicating with stakeholders, and being accountable for the outcomes of activities that are assigned.

The role of the involves working with strong development teams (2 Senior Java Developers), the opportunity to work with big data, improving knowledge in this domain, and utilizing the resources of an international bank.

• Responsibilities:

  • Design and build frameworks for ingesting/modeling the complex Risk data
  • Develop Low latency caching to service Front office risk systems
  • Setup monitoring and management for services
  • Provide SME support for development of automated QA scripts
   

• Mandatory Skills Description:

  • Strong knowledge of Big Data technologies Hadoop Ecosystem (HDFS, Impala, HIVE, HBASE, etc.) and Apache Spark
  • At least 5 years of experience in software development, including professional backend software development experience;
  • Strong Knowledge of Java programming languages
  • Should be familiar with algorithms and design patterns
  • Familiarity with Linux environment, including scripting skills
  • Designing and building APIs (Java);
  • Java Server-side or Back-end development;
  • Core Java;
  • Java collections and multithreading;
  • Java Memory Management;
  • Database and SQL (writing stored procedures, designing table schemas).
  • Understanding of distributed systems.
  • Understanding of CI/CD workflow.
  
  • Ability to multi-task and work under pressure.
  • Ability to pick up new concepts and apply the knowledge.
  • Demonstrated problem-solving skills.
  • Enthusiastic and proactive approach with a willingness to learn.
  • The candidate is expected to be dynamic and flexible with a high energy level as this is a demanding and rapidly changing environment

We are looking for an experienced Guidewire Developer to join our engineering team and contribute to complex insurance platform projects, including cloud migrations and deep system integrations.

Project: Insurance domain — end-to-end development and modernization of policy, billing, and claims management systems built on the Guidewire platform.

Responsibilities

• Design, develop, and maintain Guidewire-based solutions across PolicyCenter, BillingCenter, and ClaimCenter
• Lead and participate in Guidewire Cloud migration initiatives
• Build and maintain integrations with finance, payment, and document management systems using REST, SOAP, and XML
• Produce High-Level and Low-Level Design documentation to support solution architecture
• Perform data reconciliation between Guidewire and Data Warehouse environments
• Collaborate with business analysts, architects, and QA engineers within Agile delivery teams

• Ensure code quality through reviews, best practices, and adherence to Guidewire standards

   

Requirements

• 4+ years of hands-on experience with Guidewire (PolicyCenter, BillingCenter, and/or ClaimCenter)
• Proven experience with Guidewire Cloud migration projects
• Strong integration expertise across finance, payment, and document management domains
• Solid command of GOSU, XML, REST, and SOAP
• Experience creating High-Level and Low-Level Design documentation
• Data reconciliation experience between Guidewire and Data Warehouses
• Agile delivery experience (Scrum or Kanban)

• Upper-Intermediate English or higher

   

Nice to have:

• Guidewire Professional or ACE Certification
• Java, Python, or PL-SQL skills
• Experience with Spring Boot, React, or Angular
• Familiarity with Jenkins, Docker, or Kubernetes
• Knowledge of Oracle or MS SQL

What We Offer

• Transparent strategy and thoughtful management that keep everyone aligned
• Space for personal growth and career development without limits
• A culture of continuous learning: internal courses, workshops, and English classes twice a week
• Skill up events where we share experience and stay on top of trends
• Competitive perks: flexible schedule, a strong compensation package, support for professional certifications, and generous vacation policy
• Team spirit that thrives through regular events, gatherings, and celebrations

GD Next is a European group of companies, specialising in KYC, Fraud prevention, financial messaging, and Open Banking solutions. We integrate innovative, modern technologies into the traditional financial sector to strengthen digital banking and enhance the customer experience. By combining proven, market-validated technologies with the expertise of our team and trusted partners across Europe, we deliver real and tangible value to our clients.

We are looking for a Junior Java Software Engineer to join our Open Finance project team. This is a great opportunity for aspiring developers who want to gain hands-on experience in financial technology and grow their expertise in Java development.
The role will also include participation in 24/7 project hotline support on a rotational basis for additional compensation.

Key Responsibilities:

• Develop and maintain backend services using Java and relevant frameworks.
• Assist in implementing solutions that align with OpenFinance and PSD2 standards.
• Support the integration of third-party financial institutions and payment service providers (ASPSPs).
• Work closely with senior developers and the customer project team to gather requirements, participate in design discussions, and contribute to the development process.
• Write and maintain clean, efficient, and well-documented code.
• Participate in code reviews to ensure adherence to best practices, security, and performance standards.
• Collaborate with front-end teams for seamless integration between backend and front-end components.
• Develop unit and integration tests to maintain code quality.

• Troubleshoot and debug issues in backend services.

   

Required Skills & Qualifications:

• Basic understanding of Java and hands-on experience in backend development.
• Familiarity with core Java concepts (OOP, multithreading, collections).
• Understanding of RESTful APIs and JSON.
• Knowledge of relational databases (PostgreSQL, MySQL, or similar).
• Experience using Git for version control.
• Basic understanding of web security concepts (OAuth 2.0, JWT, encryption techniques).
• Strong problem-solving skills and willingness to learn new technologies.
• Good communication and teamwork abilities.
• B2 English (Upper-intermediate or higher).

Desired Skills:

• Experience with Spring Framework (Spring Boot, Spring Security).
• Basic knowledge of cloud platforms (AWS, Azure) and containerization (Docker).
• Familiarity with CI/CD tools and deployment practices.
• Exposure to Agile methodologies (Scrum, Kanban).
• Interest in financial technology (FinTech) and willingness to learn OpenFinance and PSD2 regulations.

Additional Information:

• Candidates will have the opportunity to grow within the company and gain exposure to modern financial technologies.
• The role will include participation in 24/7 support on a rotational schedule (1 day on duty / 1 day off duty) for additional compensation.
• This is a great opportunity for junior developers to develop real-world experience in a fast-paced and innovative financial services environment.
• Location: Ukraine.
• The project language is Ukrainian.

Numerical Technologies LTD is a leading provider of custom software solutions and services specializing in risk, limits, and regulatory capital. Right now, we are looking for a Java Developer to join our team.

What you will be doing:

As part of the team, you will be participating in a project for a major US financial holding company.  You will develop, maintain, and support software features, write scalable and fault-tolerant Java code, debug applications, and integrate with internal and third-party services. You will collaborate with the product team to meet requirements and ensure code quality through testing, code reviews, and system design.

Project: Modernization of a monolithic system into a microservices architecture. Java services provide authentication, logging, and data management. Python services handle core computational logic.

What we’re looking for:

• 5+ years of experience in Java development, preferably in FinTech.
• Strong experience with Java and Spring Framework.
• Solid understanding of microservices architecture and design patterns.
• Proficient in SQL (Oracle, PostgreSQL).
• Experience with AWS.
• Python knowledge is a plus.
• Ability to test your own code to ensure quality.
• Capable of working autonomously and independently. 
• University diploma (Bachelor’s degree or above) required.
• Excellent communication and collaboration skills in an international environment.
• Upper-intermediate English level or higher.

What we offer:

• Competitive compensation depending on experience and skills.
• Regular assessments and salary reviews.
• Paid personal days.
• Mental health support program.
• Partial gym compensation.
• Language classes.
• Flexible working schedule.

Numerical Technologies LTD is a leading provider of custom software solutions and services specializing in risk, limits, and regulatory capital. Right now, we are looking for a Java Developer to join our team.

What you will be doing:

As part of the team, you will be participating in a project for a major US financial holding company.  You will develop, maintain, and support software features, write scalable and fault-tolerant Java code, debug applications, and integrate with internal and third-party services. You will collaborate with the product team to meet requirements and ensure code quality through testing, code reviews, and system design.

Project: Modernization of a monolithic system into a microservices architecture. Java services provide authentication, logging, and data management. Python services handle core computational logic.

What we’re looking for:

• 5+ years of experience in Java development, preferably in FinTech.
• Strong experience with Java and Spring Framework.
• Solid understanding of microservices architecture and design patterns.
• Proficient in SQL (Oracle, PostgreSQL).
• Experience with AWS.
• Python knowledge is a plus.
• Ability to test your own code to ensure quality.
• Capable of working autonomously and independently. 
• University diploma (Bachelor’s degree or above) required.
• Excellent communication and collaboration skills in an international environment.
• Upper-intermediate English level or higher.

What we offer:

• Competitive compensation depending on experience and skills.
• Regular assessments and salary reviews.
• Paid personal days.
• Mental health support program.
• Partial gym compensation.
• Language classes.
• Flexible working schedule.

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

• Responsibilities:

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

• Mandatory Skills Description:

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

• Nice-to-Have Skills Description:

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

• Languages:
  • English: B2 Upper Intermediate

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!

Job Description

We are seeking a Technical Lead to drive the design and development of the new OneAPI backend platform, a scalable API infrastructure running on cloud-native architecture (AWS & GCP). The Technical Lead will guide a small team of engineers, provide hands-on coding expertise, and ensure delivery excellence with a DevOps-first mindset.

• 10+ years of backend engineering experience with strong expertise in Java & Spring Boot.
• Proven experience building platform-level APIs and distributed systems.
• Deep knowledge of cloud platforms (AWS and/or GCP) and cloud-native architectures.
• Strong Kubernetes (K8s) experience for container orchestration.
• DevOps mindset: CI/CD pipelines, monitoring, observability, automation.
• Experience leading small, versatile teams and collaborating across disciplines.
• Experience working in a team responsible for products quality
• Strong problem-solving and communication skills.

Job Responsibilities

• Lead architecture and technical design for the OneAPI backend platform.
• Drive best practices in coding, testing, CI/CD, and DevOps culture.
• Collaborate with stakeholders to define API standards, integration patterns, and platform roadmap.
• Provide technical mentorship and guidance to the engineering team.
• Ensure solutions are secure, scalable, and optimized for performance.
• Ensure quality of develope software
• Participate hands-on in development, especially in critical/complex components.

Department/Project Description

Our client is a global leader in cloud security, enabling organizations to securely transform their networks and applications for a mobile and cloud-first world. Through its Zero Trust Exchange™ platform, it provides fast, secure, and seamless access to applications, regardless of device, location, or network. Trusted by thousands of enterprises, their products help reduce risk, lower IT costs, and deliver a better user experience by replacing traditional on-premises security with a modern cloud-delivered approach.

A next-generation cross-asset data management platform to provide globally consistent data and innovative tools to support business strategy for trade/sales clients, which is built on big data architecture, highly scalable, and cloud-ready. The platform enables industry-leading analytics, client reporting, regulatory compliance, surveillance, supervisory reporting, and data science solutions (data flame). The project tech stack: Java, Scala, Spring, SQL, Kafka, Hadoop.

We are looking for a strong Senior Java Developer capable of being able to work within the team, being a mentor for team members, communicating with stakeholders, and being accountable for the outcomes of activities that are assigned.

The role of the involves working with strong development teams (2 Senior Java Developers), the opportunity to work with big data, improving knowledge in this domain, and utilizing the resources of an international bank.

Responsibilities:

• Design and build frameworks for ingesting/modeling the complex Risk data
• Develop Low latency caching to service Front office risk systems
• Setup monitoring and management for services
• Provide SME support for development of automated QA scripts
 

Mandatory Skills:

• Strong knowledge of Big Data technologies Hadoop Ecosystem (HDFS, Impala, HIVE, HBASE, etc.) and Apache Spark
• At least 5 years of experience in software development, including professional backend software development experience;
• Strong Knowledge of Java programming languages
• Should be familiar with algorithms and design patterns
• Familiarity with Linux environment, including scripting skills
• Designing and building APIs (Java);
• Java Server-side or Back-end development;
• Core Java;
• Java collections and multithreading;
• Java Memory Management;
• Database and SQL (writing stored procedures, designing table schemas).
• Understanding of distributed systems.
• Understanding of CI/CD workflow.

• Ability to multi-task and work under pressure.
• Ability to pick up new concepts and apply the knowledge.
• Demonstrated problem-solving skills.
• Enthusiastic and proactive approach with a willingness to learn.
• The candidate is expected to be dynamic and flexible with a high energy level as this is a demanding and rapidly changing environment

Nice-to-Have Skills:

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

In a partnership with a global consulting company we are looking for a skilled Scala Engineer to join our team and help build high-performance, scalable backend systems. You’ll be working with a modern functional stack to solve complex data challenges and optimize our distributed architecture. The client is a British multinational enterprise software company.

The Tech Stack

• Language: Scala 2.13
• Framework: Play Framework (Pekko-based)
• Data: MySQL, Redis
• Infrastructure: AWS Services
• Monitoring: Grafana, Kibana

Core Responsibilities

• Design and maintain robust backend services using Scala and the Pekko-based Play Framework.
• Write clean, testable code emphasizing immutability and functional programming principles.
• Optimize database performance through SQL profiling, indexing, and query refinement.
• Manage and deploy cloud-native applications within the AWS ecosystem.
• Collaborate through a structured CI/CD pipeline and Git-based PR workflow.

Technical Requirements

• Scala Mastery: Deep knowledge of the Scala standard library, specifically collections, Futures for concurrency, and pattern matching.
• Database Expertise: Strong proficiency in SQL. You should be comfortable explaining execution plans and optimizing slow queries.
• Cloud Proficiency: Hands-on experience with core AWS services (e.g., EC2, RDS, S3, or Lambda).
• DevOps Mindset: Solid understanding of version control (Git) and automated deployment flows.

Nice to Have

• Experience with functional persistence libraries like Doobie or Squeryl.
• Familiarity with observability tools; specifically building Grafana/Kibana dashboards and configuring alerts.
• Direct experience with horizontal scaling and managing state in large-scale distributed Pekko systems.

Senior Java Engineer (high-load product) 

Are you a Java Developer looking for new challenges? 
What about working with a high-profile client with millions of QPS? 
If you have experience developing high-performance distributed systems, this is the perfect opportunity to work on a new digital marketing management platform with a world-renowned client.
 
Project tech stack: 
Concurrency -  a high-load, low-latency system.
Cache: Aerospike, Memcached
Cloud: AWS, GCP
DB: PostgreSQL, Superset
Streams: Kafka, Kinesis
Data formats: Avro, Protobuf
Languages: Java, Scala, Python
 
About the project:
Our client is a leading streaming service based in the United States. With millions of users worldwide, its devices provide easy access to free TV, live news, sports, movies, etc. The client has an advertising business and also licenses its hardware and software to other companies.
 
Location:
Ukraine remote
 
Skills & Experience:
- 4 - 8 years of experience building large-scale and low-latency distributed systems
- B.S. or M.S. degree in Computer Science, Engineering, or equivalent 
- Command of Java or C++
- Solid understanding of algorithms, data structures, performance optimization techniques, object-oriented programming, multi-threading, and real-time programming 
-Self-motivated individual with a high level of accountability and ownership
- Critical thinking and practical decision making
- Can do, results-oriented mindset
 
Will be a plus: 
- Experience with distributed caching, SQL/NoSQL, and other databases is a plus 
- Experience with Big Data and cloud services such as AWS/GCP is a plus
Experience in the advertising domain is a big plus 

 Responsibilities
- Work alongside a highly skilled engineering team to design, develop, and maintain large-scale, highly performing, real-time applications
- Own building features, driving directly with product and other engineering teams 
- Demonstrate excellent communication skills in working with technical and non-technical audiences 
- Be an evangelist for best practices across all functions – developers, QA, and infrastructure/ops 
- Be an evangelist for platform innovation and reuse 
- Deliver top-quality software in a timely fashion 

 

The company is an e-trading technology company, providing connectivity and automated workflow solutions for banks and asset managers operating in the Fixed Income and Derivatives markets.

Location: Remote First; office location in London (flexible remote working locations within UK/Europe)
Employment type: Permanent
Working Hours: Full time (UK 9-6)

You will work within a small team where you will pair-program to:

• Build resilient and adaptable fintech platforms and components in Java
• Refactor to improve code design
• Write lots of tests (every one of our commits is continuously and rapidly verified by thousands of tests)
• Automate the boring bits
   

Features of the way we work:

• We avoid silos by regularly rotating between teams to work on the whole system with an Our Code not My Code mindset and approach
• We practice trunk-based development and continuous integration: we treat every commit as releasable
• We treat broken tests as failures and revert where possible
• We practice TDD, BDD and DDD
• We automate as much as possible
• We pair program to ensure that everyone understands the context of what they are working on. We also believe that pairing drives quality, learning, cross-skilling, and builds empathy with other developers

• Sometimes we have to care about throughput and latency and so take this into account when writing code

   

Salary: dependent on experience up to £130,000 + Shares + Benefits