Jobs Backend

Main Responsibilities

– Participate in the design, implementation, and maintenance of server-side code for web applications and services, ensuring it is efficient, scalable, and secure

– Design and manage databases, including schema design and improvements, query optimization, and ensuring data integrity and security

– Develop and maintain integrations between different parts of the system and with external services, ensuring robustness and clear documentation

– Ensure code is developed with a comprehensive understanding of deployment procedures and how it will function within the overall project scope

– Implement and maintain comprehensive test coverage to ensure the reliability and stability of the codebase

– Regularly maintain and refactor the codebase to address issues, improve performance, and manage technical debt

– Work closely with a geographically distributed team of engineers, QA, UI/UX designers, and PMs to ensure seamless integration, align on project goals, and collaboratively address technical challenges

– Actively participate in regular internal team meetings and company-wide meetings to stay aligned with project goals, share updates, and contribute to broader organizational challenges

– Implement and adhere to security best practices to protect against common vulnerabilities and ensure the safety of the application and its data

Mandatory Requirements

– 4+ years of experience in commercial software development

– Experience with the Go programming language (or any other similar), including its syntax, standard library, and best practices for writing efficient, clean, and maintainable code

– Experience with relational databases, including writing and optimizing SQL queries, designing schemas, and managing migrations

– Basic understanding in containerizing applications using Docker and managing Dockerfiles

– Experience with CI/CD pipelines, automating build, test, and deployment processes, and familiarity with tools like Jenkins or GitHub Actions

– Proficiency in Git for version control, including branching, merging, pull requests, and code review practices

– Proficiency in testing and debugging, including writing unit and integration tests

– Ability to design and implement scalable RESTful and GraphQL APIs, with a strong emphasis on security best practices (e.g., OWASP Top 10)

– Analytical and problem-solving abilities to address technical challenges and optimize existing systems

– Strong communication and documentation skills with the ability to explain technical concepts to both technical and non-technical stakeholders

Will be a plus

– Understanding of concurrency models, goroutines, channels, and parallelism

– Familiarity with additional database technologies like Cassandra, Redis, or Elasticsearch can be beneficial for handling diverse data storage and retrieval needs

– Familiarity with cloud platforms such as AWS, including deployment, scaling, and managing services

– Experience with GraphQL, which can complement RESTful API skills

– Experience with message brokers can be useful for managing asynchronous communication in distributed systems

– Familiarity with Ruby on Rails since we have an internal project using this framework

We offer

– Equipment

– Ongoing learning opportunities

– Insurance for employees and family

– Opportunity for the most experienced employees to work in the US office in the future

About the Company
 

Digis is a European IT company with 200+ specialists delivering high-load SaaS platforms, enterprise solutions, and cloud-native products for clients worldwide. We build long-term engineering teams and ensure transparency, stability, and professional growth for every talent.
 

About the Client & Project

You will join a fast-growing logistics technology platform focused on automating freight operations and digital document exchange between carriers, brokers, and shippers. The system is designed to process high volumes of structured business documents, integrate with multiple external partners, and ensure reliable, real-time data exchange across the supply chain ecosystem.

You will be involved in developing and scaling a modern EDI platform, enhancing integrations, and improving system performance and reliability.
 

Tech Stack

Backend: C#, .NET Core, ASP.NET Core
Integration: EDI (X12, EDIFACT), REST APIs
Data & Messaging: SQL Server, RabbitMQ / Azure Service Bus
 

Requirements

• 5+ years of experience with .NET (C#)
• 3+ years with ASP.NET Core
• 1+ year of experience with EDI 
• English level: Upper-Intermediate+
   

Responsibilities

• Design and develop backend services for EDI processing and integrations
• Build and maintain APIs for external partner communication
• Work with structured data formats (X12, EDIFACT, JSON, XML)
• Improve system scalability and reliability
• Collaborate with CTO, Product Manager, and engineering team
• Participate in code reviews and technical discussions
   

Why this project is exciting

• Work on a high-load platform in the logistics domain with real business impact
• Opportunity to build and scale a modern EDI ecosystem
• Direct collaboration with experienced CTO and Product team
• Long-term project with stable roadmap and continuous growth
   

We offer:

• Paid 20 vacation days per year
• Paid 5 sick leaves per year with no medical documents needed
• Personalized development plan and career growth support
• Compensation for professional trainings
• Work equipment and home office setup support
• English courses compensation
• Transparent and horizontal communication
• Accounting support
• Free corporate psychologist services

Onicore is a FinTech company specializing in developing products for cryptocurrency operations. We strive to make crypto convenient and understandable for everyone.
 
And now we are looking for a talented and experienced Java Team Lead to join our team. If you’re passionate about working with the latest technologies, contributing to exciting product developments, and collaborating with an awesome team, we want to hear from you!
 
Your Key Duties:

• Design, develop, and maintain high-performance, scalable Java-based applications in the FinTech domain.
• Implement and optimize multithreaded and concurrent solutions, ensuring thread safety and system reliability.
• Build and maintain microservices using the Spring ecosystem.
• Ensure database efficiency, including query optimization, proper indexing, and transaction handling.
• Evaluate and improve application performance, conduct profiling sessions, and resolve bottlenecks.
• Design and implement synchronous and asynchronous integrations with internal and external systems.
• Participate in architectural discussions, propose improvements, and drive technical initiatives.
• Collaborate closely with product managers, architects, and QA engineers to deliver business-critical solutions.
• Write clean, maintainable, and well-tested code following best practices.
   

Your Skills:

• 5+ years of professional experience in Java development.
• Strong expertise in Java 17+ (knowledge of modern language features, streams, lambdas, functional programming concepts).
• Deep understanding of core Java:
• Collections Framework, Generics, Streams, Functional Interfaces
• Concurrency utilities (Executors, CompletableFuture, Fork/Join, Locks, Atomics, etc.)
• Proven experience with the Spring ecosystem: Spring Boot, Spring Data (JPA/Hibernate), Spring Security, Spring Cloud (microservices).
• Solid understanding of databases (SQL and/or NoSQL), including:
• Transactions, isolation levels, and locking mechanisms
• Query optimization and indexing strategies
• Hands-on experience with multithreading and concurrency, including race conditions, deadlocks, synchronization, and strategies to avoid them.
• Proficiency in synchronous and asynchronous communication: REST, messaging systems (Kafka, RabbitMQ, etc.), event-driven architectures.
• Experience working on FinTech or financial services projects.
• Strong focus on performance evaluation, scalability, and reliability.
• Strong problem-solving skills, ability to work independently, take initiative, and drive solutions proactively.
• Self-driven and responsible, capable of working with minimal supervision.
• Proactive, solution-oriented mindset.
• Team player with a collaborative attitude.
   

Nice to have:

• Experience with Kubernetes, Docker, and cloud-native environments.
• Experience with application profiling and performance tuning:
• Tools such as VisualVM, JFR (Java Flight Recorder), JMC (Java Mission Control)
• Identifying and resolving performance bottlenecks
• Analyzing complexity of SQL queries and optimizing execution plans
• Familiarity with CI/CD pipelines and DevOps practices.
• Knowledge of distributed systems, event sourcing, or CQRS.
   

What’s on us:

— Competitive salary and benefits package.

— Opportunities for professional development and career growth.

— Health insurance.

— Remote work with the possibility to visit our office in Kyiv.

— Space to share your ideas and bring them to life.

Is this all about you? Send us your CV!

About the project:

 We are seeking a detail-oriented and tech-savvy Junior .Net developer\Data Import Support Specialist to join our team. The ideal candidate will be responsible for assisting clients and internal teams with data import processes, troubleshooting issues, and ensuring data integrity. This role requires strong analytical skills, problem-solving abilities, and excellent customer service.

Does this relate to you?

• Experience in data import, data processing, or technical support roles.
• Proficiency in SQL( mysql and postgres), Excel, or other data manipulation tools.
• Basic .Net and C# knowdlege.
• Experience/Knowledge with AI dev tools (CodeX, CaludeCode, etc.)
• Strong analytical and problem-solving skills.
• Excellent communication and customer service skills.
• English is Upper-Intermediate or higher.
•  

A new team member will be in charge of:

• Support clients and internal teams in importing, validating, and processing data.
• Troubleshoot data import issues and provide timely resolutions.
• Ensure data accuracy, consistency, and compliance with company standards.
• Collaborate with developers, analysts, and project managers to improve data import workflows.
• Document common issues and solutions to enhance process efficiency.
• Assist with system configurations and data mappings as needed.

• Provide training and guidance on best practices for data imports.

   

Additional information:
The workday on the project starts at 8 AM EST / 3 PM EET.

Ajax Systems is a full-cycle company working from idea generation and R&D to mass production and sales. We create security solutions for residential and commercial properties, with a portfolio of 280+ devices across intrusion protection, video surveillance, fire safety, and automation. The whole team is in one office in Lviv, all technical and product decisions are made locally.

We’re looking for an Java Developer to join us and continue the evolution of a product that we love: someone who takes pride in their work to ensure that user experience and development quality are superb. You will be able to develop the apps in the best hardware company of Ukraine with around 300M active users around the world. Moreover, very soon you will have a chance to start several new products from scratch.

Required skills:

• 5+ years of commercial experience in backend development with Java in an enterprise environment;
• Strong understanding of Java Concurrency and hands-on experience with concurrent programming in production systems;
• Solid understanding of SOA, microservices, and event-driven architecture;
• Practical experience with cloud computing platforms;
• Experience building and supporting high-load, scalable, and highly available systems;
• Hands-on experience with messaging brokers;
• Strong understanding of modern backend infrastructure, NoSQL, key-value databases, and in-memory storage solutions;
• Practical experience with Docker or Kubernetes;
• Experience with Git, Gradle or othet CI/CD tools;
• Strong knowledge of unit testing and automated testing approaches.

Would be a plus:

• Experience with some of technologies: Redis, Netty, Akka, NATS, AWS, MQTT, Kafka, MongoDB, gRPC.
• Practical experience with Kotlin.

What you will do:

• Design and develop core backend services and data pipelines for the product line;
• Build clean, maintainable, and production-ready code with a strong focus on quality;
• Contribute to backend architecture, drive technical decisions, and document solutions for reliable deployment and operations;
• Ensure proper test coverage with unit and integration tests;
• Take ownership of performance, scalability, and cost efficiency within your domain;
• Maintain production reliability through monitoring, alerting, dashboards, and runbooks;
• Investigate and resolve production issues, including deep-dive analysis of complex cases;
• Work in a strong engineering culture with testing, continuous delivery, and DevOps practices;
• Collaborate closely with product and engineering teams to deliver new features and improve existing services.

Why this role is interesting:

• Opportunity to work on high-load backend systems and distributed architecture;
• Real impact on core product development and architectural decisions;
• Modern technology stack and engineering-driven environment;
• Close collaboration with experienced engineers in a culture that values quality, ownership, and technical excellence;
• Challenging tasks where performance, reliability, and scalability truly matter.

We offer:

• The opportunity to share and implement your own ideas that could impact products and production;
• Work with a motivated team and an environment with a zero-bullshit culture;
• Competitive salary;
• Medical insurance;
• Corporate English classes;
• Compensation for professional training;
• The chance to take part in beta testing of Ajax security systems — receive and test new devices before their release.

Ajax Systems is a Ukrainian success story, a place of incredible strength and energy.
Join us in making Made in Ukraine 🇺🇦 synonymous with reliability.

The family-style company is looking for a talented .NET Developer to join our team. If you are looking for an awesome team, send us your CV!

The Project

You will join a project for a large, well-known company in the insurance sector, working on a B2B corporate SaaS solution. The platform serves a wide user base and is deployed on Kubernetes in Azure.

Your primary focus will be on application development: building new features, improving existing functionality, and contributing to the evolution of a scalable product.

Tech Stack:

• Backend: C#, ASP.NET Core
• Frontend: Angular
• Database: PostgreSQL
• Infrastructure: Kubernetes, Microsoft Azure
• Other: REST APIs, SaaS architecture

Nice to have:

• Rust
• Experience with geospatial data and related libraries
   

What You'll Do
 

• Develop and maintain full-stack features using ASP.NET Core, Angular, and PostgreSQL
• Extend and improve the SaaS platform based on the product backlog
• Collaborate closely with the team and client in English
• Take ownership of tasks and contribute to technical decisions
• Share ideas and continuously improve both the product and development process
   

What We're Looking For
 

• Experience with (or strong willingness to learn) ASP.NET Core, Angular, C#, and PostgreSQL
• Understanding of modern web application development practices
• Proactive mindset - curiosity, ownership, and eagerness to learn
• Ability to work independently while being a strong team player
• Good communication skills in English (day-to-day project language)

What we offer
 

• Sane and polite, but effective management
• The best corporate culture (according to our teammates' opinions)
• Competitive salary and other stuff
• Remote work, full time
• Becoming not just another developer, but a part of UKAD with unique value and long-term relationships.
   

Some facts about UKAD to help you make a decision
 

During 2022-2025, we only increased cooperation with our foreign partners.

UKAD combines benefits of family-sized companies, like no bureaucracy, easy access to the executives, with sustainable growth and vast opportunities.

Our company is strong enough to be not just a vendor but a tech partner. We can afford to choose customers that respect developers

UKAD is one of the leading employers in Kharkiv, according to DOU.

We never hire people for projects, but to build the team, so if the project ends, you remain a part of UKAD.
 

Aren't we the company you're looking for?

About the Role

We are seeking a motivated Software Developer to join our team working on innovative bioinformatics and computational biology projects. You will primarily work on our core backend services and microservices architecture, with opportunities to contribute across the full stack.

Key Responsibilities

- Develop and maintain backend microservices using Python (FastAPI/Flask)

- Work with biological data processing pipelines and proteomics workflows

- Implement RESTful APIs and integrate with various data sources

- Collaborate on database design and optimization (PostgreSQL, SQLAlchemy)

- Participate in code reviews and contribute to technical documentation

- Debug and optimize existing codebase for performance and reliability

Required Qualifications

- Bachelor's degree in Computer Science, Software Engineering, or related field (or equivalent experience)

- 1+ year of professional software development experience

- Strong programming skills in Python

- Understanding of RESTful API design principles

- Experience with version control systems (Git)

- Basic knowledge of SQL and relational databases

- Good problem-solving skills and attention to detail

- Ability to work both independently and as part of a team

Preferred Qualifications

- Biology/Bioinformatics background - Understanding of molecular biology, proteomics, or computational biology concepts

- Frontend experience - Familiarity with React, TypeScript, and modern web development

- Machine Learning knowledge - Experience with ML frameworks (scikit-learn, TensorFlow, PyTorch)

- DevOps understanding - Knowledge of CI/CD pipelines, containerization, and deployment practices

- Experience with microservices architecture

- Familiarity with Docker and containerization

- Knowledge of asynchronous programming (asyncio)

- Understanding of data processing pipelines

- Experience with scientific computing libraries (NumPy, Pandas)

What We Offer

- Opportunity to work on cutting-edge bioinformatics projects

- Mentorship from experienced developers

- Cross-functional exposure (backend, frontend, ML, biology, DevOps)

- Professional development opportunities

- Collaborative and learning-focused environment

We’re building financial infrastructure designed to outperform legacy processors by an order of magnitude.
As our Senior Laravel Developer, you’ll architect systems that give us an unfair advantage — in speed, scale, and execution. Your work won’t just ship; it will shape how our next-generation financial ecosystem competes and wins.

We're operating in a $50B market still dominated by outdated institutions. Your mission is to build flexible, high-performance systems that allow us to move faster than incumbents and deliver innovations they can't match.
This is a role for someone who wants their work to change how financial infrastructure is built.


What You’ll Do

• Architect and scale core backend platforms across multiple fintech products
• Build AI-driven tools and real-time optimization engines
• Ship features in days — not months — with iterative, high-velocity execution
• Design backend systems supporting hundreds of merchants with zero bottlenecks
• Own the Laravel-powered backend stack end-to-end
• Drive engineering decisions and lead by impact, not hierarchy
• Help shape a no-fluff, high-performance engineering culture

You’re a Strong Fit If

• You think like a builder — not someone waiting for assigned tickets
• You thrive in ambiguity and move with urgency
• You ship fast, learn faster, and solve problems without waiting for permission
• You know when to optimize and when to deliver quickly
• You’ve built products that real users rely on
• You care more about outcomes than theoretical “best practices”

Required Skills

• Deep experience with PHP and Laravel (hands-on, real-world, production-scale)
• Strong understanding of backend architecture and system scalability
• Experience working on high-throughput financial or transactional platforms
• Ability to think independently and make impactful engineering decisions
• Comfortable owning systems end-to-end in a high-autonomy environment

Nice-to-Have

• Experience with AI tooling or automation engines
• Background in fintech, payments, or high-volume transaction systems
• Familiarity with real-time monitoring, optimization, or distributed architectures
• Experience mentoring or leading engineering teams

With Us You’ll Have

 • Fully remote setup with a flexible schedule

• Fast-moving environment where decisions are quick and clear
• Direct collaboration with founders & tech leadership — your work has real impact
• Competitive compensation based on experience
• A team that values ownership, clarity, and healthy communication

Job Description

Join our Chatbot team and help shape the future of AI-powered customer experience at Wix. As an AI Engineer, you’ll drive the development of intelligent, context-aware features that elevate our Customer Care Chatbot into the go-to solution for users seeking guidance throughout their Wix journey. You’ll work end to end—researching cutting-edge AI methodologies, building scalable features, and ensuring they deliver real, lasting value to millions of users.

You will:

• Design, develop, and integrate AI-driven capabilities using state-of-the-art LLM and NLP technologies
• Conduct research and experimentation to identify innovative approaches and apply advanced models to real customer-care challenges
• Own feature development from ideation to deployment—partnering with product teams, defining requirements, estimating scope, implementing solutions, and monitoring performance
• Enhance system performance, stability, and reliability to ensure a seamless, always-available service
• Collaborate in architectural and technical discussions to continually improve system design and developer experience

Requirements

• 5+ years of experience as a Server Engineer
• Proven ability in designing server solutions, API design, and handling technical discussions
• Passion for product development
• Understanding of business objectives and goals and how to transform business problems into actionable tasks
• Strong communication skills 

Nice to have

• Experience implementing and integrating gen-AI models, particularly large language models (LLMs) into production systems
• Proficiency with Large Language Models, including prompt engineering, fine-tuning, automatic evaluation and Retrieval-Augmented Generation (RAG) – an advantage

About the Team

The Chatbot team’s mission is to make the Customer Care Chatbot the principal choice for users seeking solutions during their Wix experience. We are committed to developing an AI Chatbot that leverages Wix’s knowledge and relies on contextual cues to determine the most appropriate next action to facilitate the user’s journey.

About Wix

Wix makes it possible for anyone to succeed online.

Since 2006, we’ve grown to around 5,500 employees in 22 countries, launched over 40 products, and serve over 243 million users and their visitors worldwide.

At Wix, we push you to innovate, evolve in non-traditional ways, and collaborate. We operate in small teams that work closely together at a high level.

Although we’re already industry leaders in web creation and business, our work is nowhere near done. Our goal is to become the main engine of the Internet so we can create a more open web for all.

We’re proud to be an equal opportunity company. Wix was built around the idea that everyone has the right to be successful, online. This same vision defines us as a company: creating a work environment where everyone is welcome, and anyone has the right to succeed.

We are hiring a Senior Full Stack Engineer for an Israeli AI company building a cloud-native platform for AI-powered video adaptation at scale. The product enables media companies, marketing teams, and creators to localize video content into any language with natural-sounding dubbing, expressive lip sync, and context-aware translation - all fully automated and production-ready.

The platform runs a proprietary AI dubbing pipeline across translation, voice synthesis, and visual lip correction, and delivers polished output through an enterprise studio interface and a developer API. Clients include TED, NBA, and Wix. The system handles everything from single creator clips to enterprise batch workflows across thousands of videos, integrated into broadcast-grade and marketing production pipelines.

The backend is built on async Python and FastAPI, processing real-time audio and video streams. The frontend is a React and TypeScript studio where translators, QA teams, and enterprise clients review, fine-tune, and publish dubbed content. Infrastructure runs on AWS with Kubernetes and Docker. The product is live, growing fast, and operating at a scale that makes every engineering decision matter.

In this role you will own features end-to-end across the full stack, working directly with the core AI and video engineering teams to build the interfaces, services, and pipelines that make complex media processing feel simple and reliable.

Responsibilities

- Take ownership of complex features end-to-end, from backend services to frontend

- Design and implement scalable backend services and APIs in async Python and FastAPI

- Build and maintain the React/TypeScript studio frontend

- Work closely with advanced video and AI algorithm teams

- Own features from architecture through production deployment

- Optimize for performance, reliability, and latency in a media-heavy, real-time environment

- Mentor engineers and drive engineering best practices across the team

Tech Stack

- Async Python, FastAPI, AWS, Kubernetes, MongoDB, Redis, React, TypeScript, real-time video/audio in the browser

Requirements

- 5+ years of experience as a full stack engineer

- Strong full stack engineer who can drive complex technical tasks independently

- Product-minded - able to translate product needs into solid technical solutions

- Comfortable working across Python backend, cloud infrastructure (AWS / Kubernetes), and frontend stack (React, TypeScript)

- Experience integrating complex algorithms or data pipelines into production systems

- Fluent English and strong communication skills

Nice to Have

- Deep knowledge of video technologies (e.g. FFmpeg, codecs, streaming, media pipelines)

This is a long-term opportunity to work on technically serious problems - media AI, real-time processing, and enterprise-grade infrastructure - at a company trusted by some of the world's leading media and tech brands, and growing across every market it enters.

Eiravox is seeking a talented and driven Strong Senior Nest.js Developer to expand our growing backend team. We specialize in scalable, high-performance solutions for startups and established companies, focusing on AI-powered tools, cloud infrastructure, and modern web platforms. If you’re passionate about backend development and building robust APIs, we’d love to connect!

What You’ll Do:

✅ Develop high-quality back-end services using Nest.js and Node.js.
✅ Design and implement efficient, maintainable, and scalable architecture following SOLID principles and best practices.
✅ Build and integrate RESTful APIs and WebSocket services.
✅ Collaborate closely with front-end developers, DevOps, and product teams.
✅ Participate in code reviews, system design discussions, and performance optimizations.
✅ Write unit and integration tests for reliable software delivery.
✅ Stay up-to-date with new backend technologies and methodologies.

Requirements:

✅ 3+ years of professional backend development experience with Node.js and Nest.js.
✅ Strong proficiency with TypeScript and JavaScript (ES6+).
✅ Deep understanding of OOP, SOLID principles, and scalable architecture patterns.
✅ Experience with relational databases (PostgreSQL preferred) and ORM libraries (TypeORM, Prisma).
✅ Familiarity with AWS services (Lambda, RDS, S3) is a big plus.
✅ Experience with CI/CD pipelines and Docker.
✅ Knowledge of security best practices (GDPR, OWASP standards).
✅ Ability to work independently and deliver clean, well-documented code.

Tech Stack We Use:

Back-End:

• Node.js
• Nest.js
• PostgreSQL (Amazon RDS)
• AWS Lambda
• Terraform (CI/CD)

Front-End (if applicable):

• React.js
• Next.js
• TypeScript

Why Join Eiravox?

✅ Competitive salary based on skills and experience.
✅ Remote-first work environment with flexible hours.
✅ High-impact projects with startups and enterprise clients.
✅ Culture of innovation, transparency, and continuous improvement.
✅ Opportunities for technical leadership and growth.
✅ Regular team meet-ups and hackathons.

About Eiravox

Eiravox is a leading IT company focused on delivering sophisticated, business-centric technology solutions. Our core expertise includes:

✔ Web Development
✔ AI Development
✔ Microservices & Cloud Infrastructure

With over 50 successful product launches worldwide, we simplify software development and drive business growth. Headquarters: Europe.

Website: https://eiravox.com

About Us

Bamboo Card is the Middle East’s leading Digital Prepaid Products Distributor and Rewards Fulfilment agency. Committed to trust, dependability, and excellence, we have been revolutionizing global loyalty programs since 2018. Our comprehensive portfolio includes eGift Cards, Prepaid Cards, and Top-Ups, delivering flexible solutions for diverse digital prepaid needs. Through strategic services such as a robust API and an advanced Client Portal, we simplify and enhance the seamless delivery of rewards at scale.

Role Overview

We are seeking an experienced Full Stack Developer to join our growing team at Bamboo Card. The ideal candidate will have strong hands-on experience in full stack development, primarily using .NET / C#, AWS cloud services, and ReactJS. You will be responsible for designing, developing, and maintaining scalable backend services as well as modern, responsive frontend applications.

This role requires a strong focus on performance, scalability, security, clean architecture, and code quality, while working closely with cross-functional teams to deliver high-quality software solutions.

Job Requirements

Technical Skills

• .NET / C# Development:
  Extensive experience in building robust, scalable applications using .NET and C#.
• Frontend Development (ReactJS):
  Strong experience in developing modern, responsive user interfaces using ReactJS, including state management, reusable components, and API integration.
• AWS Cloud Expertise:
  Solid hands-on experience with AWS services including (but not limited to):
  Lambda, S3, RDS, DynamoDB, SNS, SQS, SAM, and other relevant AWS services.
• API Development:
  Proven experience designing, building, and consuming RESTful APIs.
• Database Management:
  Proficient in SQL and NoSQL databases, with experience in data modeling, performance tuning, and optimization.
• CI/CD Pipelines:
  Experience implementing and maintaining CI/CD pipelines to enable automated, reliable deployments.
• Version Control:
  Proficient with Git and modern version control workflows.
• Architecture:
  Experience working with microservices and serverless architectures, designing scalable and maintainable systems.

• Project Description:

  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

BrainRocket is a global company creating end-to-end tech products for clients across Fintech, iGaming, and Marketing. Young, ambitious, and unstoppable, we've already taken Cyprus, Malta, Portugal, Poland, and Serbia by storm. Our BRO team consists of 1,300 bright minds creating innovative ideas and products. We don’t follow formats. We shape them. We build what works, launch it fast, and make sure it hits.

We're looking for a Senior Node.js Developer to join our team in our Warsaw office.

✅ Requirements:

✔️Strong knowledge of JavaScript and the ECMAScript 6 standards

✔️3+ years of commercial experience with Node.js and Nest.js

✔️5+ years of commercial experience in web development

✔️Commercial experience of working with high loaded SQL or NO SQL databases

✔️Commercial experience of implementing the REST, GraphQL and WebSockets

✔️Understanding of the TDD principles and experience of writing tests

✔️Understanding of microservice architecture principles

✔️Experience of GIT version control system

✔️Experience with RabbitMQ

✔️Experience with Redis

✔️Experience with databases MongoDB, MySQL

✔️At least an Intermediate level of English

✅ Will be a plus:

✔️2+ years of hands-on experience developing over CI/CD/Micro Services architecture/Containers

✔️Experience with Kubernetes

✔️Experience with Nats

✔️Experience with TypeScript

✅ Duties and opportunities:

✔️In-house platform development

✔️3rd party API integrations

✔️Actively participate in developing new features from scratch

✅ We offer excellent benefits, including but not limited to:

🚀 Career growth opportunities in an international and dynamic environment;

📚 Opportunity to develop language skills with partial compensation for language courses;

🎁 Special gifts for birthdays, weddings, and newborns;

🏝️ 20 working days of paid annual vacation, plus paid sick leaves;

🍲 Office snacks and refreshments;

🏋️ ♂️ Sports package to support a healthy lifestyle;

🩺 Comprehensive medical insurance for you and your partner;

📍 Comfortable office with great facilities in a prime location;

🎉 Exciting corporate events, team-building activities, and international company parties.

• 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