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.

Skills

Must have

6+ years of hands-on Java development experience

Strong Java Core knowledge

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

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

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

Solid knowledge of design patterns and software architecture principles

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

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

Stable career trajectory, no fragmented job history with short tenures

Nice to have

C++ development skills

Practical experience with the Eclipse RCP framework

OSGi knowledge

Oil & Gas domain experience

About us:

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

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

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

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

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

About the job:

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

What You'll get to do:

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

What You need to know:

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

Nice to Have:

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

Here's what we offer:

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

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

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

About Digis
 

Digis is a European IT company with 200+ engineers delivering complex SaaS products, enterprise solutions, and AI-powered platforms worldwide.
We focus on long-term cooperation, transparent processes, and providing engineers with real ownership of their work.
 

About the Project
 

HubSpot is a US-based product company that provides a cloud platform for marketing, sales, and customer service automation.

The platform is used globally by thousands of businesses to manage customer relationships, automate workflows, and scale operations.
 

You will be working on internal financial systems and integrations, including NetSuite, Revenue Recognition, and other core business domains that directly impact company operations.
 

Tech Stack

• Java
• Kafka
• MySQL / HBase
• Microservices architecture
• Third-party integrations (NetSuite)
   

Requirements

• 5+ years of experience with Java
• 2+ years of experience with Kafka
• 2+ years of experience working with microservices architecture
• English level: B2 or higher
   

Responsibilities

• Design and evolve system architecture with a focus on scalability and reliability
• Improve performance and optimize high-load systems
• Participate in code reviews and drive engineering quality standards
• Contribute to architectural decisions and technical strategy
• Collaborate closely with engineers and Business System Analysts
   

Why this role is interesting
 

Real ownership, not just tasks
You will gradually take responsibility for key systems such as Revenue Recognition and financial integrations.

Impact on business-critical domains
Your work will directly affect financial flows and core operations within a global product company.

Senior-level environment
You will work alongside experienced engineers and Business System Analysts with clearly defined requirements.

What We Offer
 

• 20 paid vacation days per year
• 5 paid sick days per year (no medical documents required)
• Personalized development plan with training compensation
• English courses compensation
• Work equipment if needed (PC / laptop / monitor)
• Flat and transparent internal communication
• Opportunity to switch between projects and technologies within Digis
• Full accounting and legal support
   

We are looking for a Java developer with experience in building high-performing, scalable APIs and web applications.
You will be a part of a talented software development team that works on internal and external Company’s applications. You will work on new APIs as well as on supporting existing applications, refactoring, and creating new solutions, building scalable distributed systems, and integrating AI-powered capabilities into existing platforms.

Responsibilities
● Contribute in all phases of the development lifecycle including the communication with the clients and partners
● Helping Project manager to figure out the requirements and translate them to the actual tasks for the team
● Write well designed, testable and efficient code
● Ensure designs are in compliance with specifications
● Prepare and produce releases of software components
● Support continuous improvements by investigating new technologies and alternatives and presenting them for architectural review AI / Intelligent Systems Responsibilities
● Integrate AI/LLM-based capabilities into backend systems (e.g., APIs, data pipelines, internal tools)
● Design reliable orchestration flows for AI components (prompt pipelines, tool usage, fallback logic)
● Implement observability for AI systems (latency, cost, error rates, unsafe outputs)
● Ensure proper governance: validation, policy enforcement, and safe handling of AIgenerated outputs
● Work with structured and unstructured data sources to support AI-driven features
● Collaborate on designing systems where AI is a component of a larger architecture, not a standalone solution

Requirements!!!
● BS/MS degree in CS, Engineering or similar subject
● Good English
● 5+ years of proven hands-on software development experience
● Excellent knowledge of Java 17+
● Experience in Spring and Spring boot frameworks
● Experience with test-driven development
● Experience in developing web applications and REST APIs
● Good knowledge of *nix based OS
● Experience with K8s and building scalable multipod APIs
● Experience with next stack: JPA, Hibernate, AMQP(RabbitMQ/Kafka), SQL and noSQL databases, Feign, REST template, web sockets, OAuth2.0, JWT, Lombok, ElasticSearch AI / Data Experience (Preferred)
● Experience integrating external AI services (e.g., OpenAI, Anthropic, or similar) via APIs
● Understanding of prompt design and limitations of LLM-based systems
● Experience building or integrating RAG pipelines (vector search, embeddings, retrieval systems)
● Familiarity with data pipelines and preprocessing for AI-driven features
● Understanding of failure modes in AI systems and how to design around them
● Experience implementing guardrails, validation, and fallback mechanisms
Nice to Have
● Experience designing AI systems in regulated environments (compliance, auditability, traceability)
● Understanding of system-level AI architecture (separation of orchestration, business logic, and model layer)
● Experience with monitoring and cost control for AI workloads

COMPANY OVERVIEW:

IT product company is a leader in providing advanced telecommunications and IoT solutions to enterprises and enterprise customers worldwide. The company's mission is to empower communication, which is why we offer a wide range of communication products that are carefully customized to meet the specific requirements of our customers. Regardless of the industry or size of the organization, we develop optimal solutions to meet your unique needs.


 

POSITION SUMMARY:

As a  Java Developer, you will join our team building cutting-edge telecommunications and IoT solutions. This role is a great opportunity for motivated juniors and final-year technical students to gain hands-on experience with Java, Spring, and modern cloud technologies while working on international projects.

RESPONSIBILITIES:

• Develop and maintain server-side components using Java EE/Jakarta EE (EJB, Servlets, JMS, etc.).
• Participate in the design and implementation of new features for telecommunications and IoT platforms.
• Work with TCP/UDP protocols for real-time communication solutions.
• Debug, troubleshoot, and optimize application performance.
• Collaborate with senior developers, QA, and DevOps engineers in delivering high-quality solutions.
• Write clean, maintainable code and assist in creating automated tests.

REQUIREMENTS:

• Basic knowledge of Java SE/EE (coursework, internship, or project experience).
• Familiarity with Enterprise Java concepts (EJB, Servlets, JMS, Jakarta EE).
• Understanding of network fundamentals with focus on TCP and UDP protocols.
• Experience with SQL/NoSQL databases (e.g., MySQL, PostgreSQL, MongoDB).
• Basic knowledge of REST APIs and socket programming.
• Understanding of version control systems (Git).
• English — Intermediate (documentation and written communication).

COMPANY OFFERS:

• Employment in according to the Ukrainian labor law (24 days of vacation, sick leave).
• Opportunity to work with advanced telecommunications technologies and gain hands-on experience.
• Exposure to a global clientele and the opportunity to contribute to the development of effective solutions.
• Mentorship from experienced professionals in the telecommunications industry.
• Collaboration and a supportive work environment.
• Competitive compensation package and growth prospects.

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.

We’re looking for a Senior Java Engineer with Python&Golang skills to join our team. 

About Us:

Our client  is defining the future of cybersecurity through our XDR platform that automatically prevents, detects, and responds to threats in real time. Singularity XDR ingests data and leverages our patented AI models to deliver autonomous protection. With the Client, organizations gain full transparency into everything happening across the network at machine speed – to defeat every attack at every stage of the threat lifecycle.

We are a values-driven team where names are known, results are rewarded, and friendships are formed. Trust, accountability, relentlessness, ingenuity, and define the pillars of our collaborative and unified global culture. We're looking for people that will drive team success and collaboration across a team. If you’re enthusiastic about innovative approaches to problem-solving, we would love to speak with you about joining our team!

About the team & role:

Our team is responsible for the backend part for the main product line - securing tens of millions of devices across the globe of all kinds of OS (Windows, Linux, macOS), and processing billions of security events every day.

• We are building services (e.g. gateways, caching, threat data ingestion etc) that process traffic & serve for two-way interaction between client's Agents on the protected devices and our cloud-based Management console (a large-scale distributed system, with a client facing, data-heavy & complex web application)
• We also enable features in this console that allow tens of thousands of users on IT security teams of our clients to manage our security SW deployed on endpoints in client's environments (e.g. investigating threats & notifications from protected devices; creating blocklists, exclusions, policies etc.).

You'll be joining a team with a significant impact on how our customers' environments (incl. 4 or Fortune10 companies, hundreds of Global2000 or governments) are protected, how they interact with agents, gain visibility into their security posture, and understand the risks and act upon them. As a core team, we're heavily involved in every end-to-end effort, features development and are key contributors to the design and build of the right architecture of client's cybersecurity solution to match the scale & hyper-growth of our business.

What will you do?

• Design, develop and support backend system serving for endpoint security
• Help us with initiatives around moving our services to a new deployment model.
• Tuning and adjusting our services to work with new CPU architectures.
• Improving the observability for our services.

Responsibilities: 

• Cross-Team Collaboration: Work closely with product, validation, and front-end engineering teams to deliver and maintain high-quality features.
• Code Quality and Maintenance: Write clean, maintainable code. Stay up-to-date with the latest advancements in backend technologies and security best practices.
• Innovation and Creativity: Bring creativity to the table. Explore new solutions and technologies to improve our product continuously.

Requirements: 

• 7+ years of extensive software engineering experience, including proven expertise in developing large-scale distributed systems and microservices architecture, with a focus on performance, scalability and reliability
• Proficiency in Java and Python 
• Experience with Golang is a plus
• Experience with cloud platforms (AWS and/or GCP) and Kubernetes (must)
• Experience with Kafka or similar solutions is a plus
• Excellent problem-solving skills
• Strong communication skills and ability to articulate technical concepts and influence engineering direction across teams, departments and stakeholders

We offer*:

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

*not applicable for freelancers

An international software company is seeking a Java Developer to work in Lviv.

The company is building a high-performance platform for the automation and remote monitoring of renewable energy facilities: wind turbines, solar power plants, and energy storage systems.

Clients are market leaders in the US and Canada (in particular, they service turbine arrays around Newfoundland).

The platform already ensures the efficient operation of over 60,000 high-performance turbines worldwide.

Tools: Git, Maven, Ant, Java Core. The project uses Java 1.8, Resteasy, WebSocket, JNA, CORBA, JDBC (we do not use Hibernate or similar frameworks), Tomcat web server, and Quartz scheduler.

Requirements: experience with Java 8, willingness to work without Spring.

Experience with networking and code optimization in Java is preferred.
 

Our client is a leading U.S. fashion retailer, offering apparel, footwear, beauty, and home goods. It operates 350+ stores and robust online platforms, combining in-store and digital experiences.

We’re looking for a backend-focused Software Engineer (70% Backend / 30% Frontend) to join a high-impact team.

In this role, you’ll help design, build, and maintain scalable systems that power seamless digital customer experiences. You’ll work closely with cross-functional teams to deliver reliable, high-quality solutions while continuously improving engineering practices.

Responsibilities

• Design, build, and maintain backend services (REST APIs, event-driven systems, databases, cloud infrastructure)
• Collaborate with engineers, product managers, and partner teams in an agile environment
• Write clean, maintainable, and well-tested code following best practices
• Contribute to system design and technical decision-making
• Support and enhance full-stack features when needed (primarily backend-focused)
• Participate in code reviews and help improve overall code quality
• Troubleshoot performance issues and optimize system reliability
• Contribute to monitoring, logging, and observability (metrics, dashboards, alerts)
• Ensure solutions meet security and quality standards

Skills Required

• Strong backend development experience (REST APIs, microservices, event-driven architecture)
• Solid understanding of software engineering fundamentals (OOP, design patterns, data modeling, algorithms)
• Experience with at least one backend language (e.g., Go, Java, .NET)
• Familiarity with cloud platforms (AWS or similar) and modern infrastructure
• Basic frontend experience (JavaScript, React/TypeScript)
• Experience with CI/CD, testing, and modern development workflows
• Familiarity with Docker/Kubernetes and monitoring tools is a plus
• Strong communication skills and ability to work in collaborative teams

Job Description

• Readiness to work in shifted working hours: till 1 AM Kyiv time (3 PM PSt time)
• 4+ years of professional software development experience
• Proficiency in server-side programming languages, especially Java
• Professional experience with Java based web services and RESTful framework, and both relational and non-relational database platforms
• Experience with large scale distributed system architecture
• Ability to trace through various services and determine root cause when issues occur
• Knowledge of Software Development Lifecycle and Agile Development/Testing practices and methodologies
• Familiarity with CI/CD methodologies
• Experince with Cloud Services (AWS) is a plus
• Excellent communication and collaboration skills
• Strong teamwork ethic, with demonstrated ability to work independently as well as a team-focused approach towards software development
• Ability to lead small projects and platform initiatives

Job Responsibilities

• Work as part of the Client team
• Participate in stand-ups and other sprint meetings
• Design and implement new solutions
• Optimize and enhance existing services
• Document changes and new features
• Perform code reviews
• Deliver code with thorough automated testing
• Drive releases to production

Department/Project Description

About Project:

Comprised of the Company’s international business units and various direct-to-consumer streaming services, Media & Entertainment Distribution department aligns technology, media distribution and advertising sales into a single business segment to create and deliver personalized entertainment experiences to consumers around the world.

GL team will be concentrated on building AdTech platform for our customer.

About Company:

Leading diversified international family entertainment and media enterprise with the following business segments: media networks, parks and resorts, studio entertainment, consumer products and interactive media.

Job Description

• 2+ years of experience with Java 8-17. Groovy, Kotlin.
• Good understanding of object-oriented programming concepts;
• Good understanding of UI and API services automation testing;
• Experience with Docker
• Experience working with business-critical customer-facing applications (user interfaces, APIs, and back-end services);
• Excellent communication skills with emphasis on writing detail-oriented documents and communications;
• Experience with Linux.
• Experience working with and configuring CI/CD (e.g., GitHub Actions, Jenkins)
• Deal well with ambiguous/undefined problems. Ability to think abstractly. A proactive approach to tasks;
• Shifted working hours 12pm till 8pm EEST timezone

Nice to have:

• Experience with Python and the Pytest framework
• Experience with SQL (MySQL)
• Practical knowledge of UI automation: Playwright or Selenium
• Familiarity with test reporting tools

Job Responsibilities

• Be responsible for designing and implementing build and test infrastructure, creating and enforcing good engineering practices, and evaluating product quality for various external and/or internal products
• Work on problems in a number of areas, including application performance.
• Build out our automated testing infrastructure to help us build reliable, scalable, high-quality products and services
• Participate in design and implementation of test infrastructure to support building and moving services into a Continuous Deployment environment
• Conduct research and create Proof of Concepts on new testing technologies/tools/concepts
• Design test strategies by analyzing and dissecting complex heavily integrated software systems
• Work collaboratively with fellow SDETs and developers to design, build and maintain a scalable, maintainable and flexible automation test framework
• Investigate root cause of issues to assist with finding the most comprehensive and robust solutions
• Collaborate closely with product, project and development teams to identify and resolve technical, business, and process related issues

We're looking for Senior Java Developer who has experience with custodial wallets + chains ( BTC, ETH, SOL, TRX) to join our team
 

Project is building an internal wallet technology platform for custodial operations across Bitcoin, Ethereum, Solana, and TRON. The platform will unify policy and governance, wallet management, transaction construction and execution, and signing coordination under a single client-owned stack, replacing the current fragmented model of multiple vendor-specific policy engines, wallet registries, and governance frameworks.

     Responsibilities:

• Build secure transaction flows for construction, signing coordination, broadcasting, and confirmation monitoring across multiple blockchain networks, ensuring reliability and scalability.
• Implement policy/governance engines for approval workflows, role-based access control, transaction limits, whitelisting, and compliance rules within a unified internal platform.
• Integrate and optimize blockchain node infrastructure, third-party APIs, and monitoring systems to maintain high availability, performance, and operational resilience.

Intempt.com is an agentic growth platform — CDP, CRM, experimentation, personalization, recommendations, journeys, analytics, and AI agents in one platform. One event-centric data model powers everything. Small team, high output. You own systems, not tickets.

What you'll build

Event pipeline. Kafka ingestion → Flink processing → validated, deduplicated, identity-stitched events available to every downstream system in near real-time. Millions of events/day.

Identity resolution. Anonymous-to-known merging, cross-device stitching, account grouping, attribute reconciliation. The backbone of our CDP — if profiles are wrong, everything downstream is wrong.

Data layer across four engines. Postgres (profiles, accounts, consent, config). Redis (session state, real-time segments, feature flags). Neo4j (account hierarchies, affinity graphs). ClickHouse (funnels, retention, experiment results, dashboards).

LLM infrastructure. Our AI agents (Qualification, Lifecycle, Research, + orchestrator Blu) hit inference APIs at scale. You build the machinery — prompt routing, model selection, token budgets, response caching, failover — not the prompts.

Public APIs. Track, identify, consent, choose, recommendations feed. You own correctness, performance, and evolution.

Typical week

• Ship a Flink job computing real-time experiment metrics → ClickHouse
• Debug a profile merge edge case where alias() fired after events were already attributed
• Take a ClickHouse retention query from 8s to 200ms
• Wire a new Shopify/HubSpot attribute path into unified profiles

• Instrument an LLM call path with token tracking, latency monitoring, automatic fallback

   

What you need

• Java — deep, production-level. JVM tuning, GC behavior, concurrency, data structure choices at 50k events/sec.
• Postgres — migrations, indexing, connection pooling, replication. Not just SELECT.
• Redis — beyond caching. Pub/sub, sorted sets.
• Kafka — topic design, consumer groups, backpressure, exactly-once semantics.
• Flink (strong plus) — stateful processing, windowing, checkpointing. Spark Streaming / Kafka Streams also counts.
• ClickHouse or Neo4j — working knowledge of at least one. Ideally both.

• LLM integration — inference APIs in production. Token limits, latency, retries, cost control.

   

Who you are

• 3–5 years building backend systems. Mid-level operating like senior.
• You own problems end-to-end: root cause → fix → deploy → monitor.
• You learn fast. You'll hit unfamiliar systems. Read docs, build mental model, ship.

• You write code others can maintain and communicate in writing — design docs, PR descriptions, postmortems.

   

What we offer

• Work alongside some of the best backend and full-stack engineers you'll ever meet
• Work directly with the founder — a UC Berkeley computer scientist who's in the code daily
• Autonomy — context, not micromanagement
• A codebase young enough to be shaped by you

Language Requirements

• At least an intermediate level of spoken and written English, enabling clear and effective communication with team members and stakeholders.

   

Hiring Process

1. 15-minute Founder Interview

2. 45–minute Engineering Interview

    

   • Architecture reasoning
   • Code/system walkthroughs
   • Scaling and failure-mode thinking

How to apply

Please email hey at intempt.com  Subject: "Backend Platform Engineer" Resume + one or two things you've built that you're proud of. No template. Just what's real.

Equal Opportunity

Intempt Technologies is an equal opportunity employer. We value diversity and do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

This vacancy requires office attendance in Kyiv

Responsibilities

• Work in SCRUM team 
• Design and develop high-load microservices
• Write high-quality code covered with different levels of tests
• Maintain services on production and assure their stability and performance
• Provide code review for teammates 
• Contribute to the Company’s development processes and practices 

Requirements

• Writing code in a clean and maintainable manner.
• Solid experience with Java 8+ 
• Experience with SQL/NoSQL databases
• Understand microservice architecture patterns.
• Good at Spring framework.
• Experience with REST, messaging systems.
• Ability to cover code by different types of tests.
• Understanding of SOLID principles
• Experience with Git 
• Excellent troubleshooting skills.
• Good communication skills.
• Intermediate+ English

Would be great to have:

• Experience with Kafka, MySQL, Redis, Aerospike.
• Experience with Spring Boot, Spring Cloud
• Experience with Docker, Kubernetes
• Experience in high-load

What we offer:

• International company with several offices in different locations : Tel-Aviv, Kyiv, Warsaw, Limassol.
• Granting an Option;
• A professional environment with great people to work with;
• Competitive salary, performance review;
• Flexible working hours, no one here tracks your work time because our culture is built on trust and cooperation;
• Social and welfare packages;
• 20 working days paid vacation and 100% sick leaves coverage;
• Opportunities to make a difference, to develop and grow;
• Regular corporate celebrations, team buildings and fun activities;
• Comfortable office close to the metro station. Our Kyiv office is open 24/7 with all safety and health measures in place.