N-iX

About client

Our client Ryan, an award-winning global tax services and software provider, is the largest Firm in the world dedicated exclusively to business taxes. With global headquarters in Dallas, Texas, the Firm provides an integrated suite of federal, state, local, and international tax services on a multijurisdictional basis, including tax recovery, consulting, advocacy, compliance, and technology services. Ryan is a seven-time recipient of the International Service Excellence Award from the Customer Service Institute of America (CSIA) for its commitment to world-class client service.

About the project:
A VAT recovery system for Ryan clients in European countries that would help to automate the regular work of VAT specialists at Ryan. The client team is located in Braga, Portugal.

Responsibilities:
• Design, build, and maintain efficient, reusable, and reliable code
• Contribute to the best possible performance, quality, and responsiveness of applications
• Identify bottlenecks and bugs, and devise solutions to mitigate and address these issues
• Help maintain code quality, organization, and automation

Requirements:
• Minimum 3 years of commercial experience as a PHP/Laravel developer
• Experience working in the finance domain (or at least education in finance) would be an advantage
• At least upper-intermediate English level
• Solid knowledge and experience with PHP and the Laravel framework
• Good understanding of JavaScript (ES6, TypeScript), HTML and CSS
• Confident knowledge of Object-Oriented Design principles
• Experience with LAMP stack (Linux, Apache, MySQL, PHP)
• Experience working with YAML and XML documents and files
• Experience working with 3rd party APIs and web services
• Skilled in using Git or another version control system
• Good theoretical understanding of software development
• Experience working in an Agile (preferably SCRUM) environment
• Strong communication skills
• Team player, responsible, and hardworking

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

N-iX is looking for experienced Junior Data Analyst to take a role in the development of a new Legislative Tracker platform, designed to monitor and analyze political and legislative developments in the UK. 

Responsibilities:

• Be responsible for updating the database through Microsoft SSMS and for developing new queries and data extraction methods.
• Contribute to the development of data collection methods through web data extraction and data ingestion tools, maintaining and sharing best practice to help ensure all delivery processes are as efficient as possible both in terms of resource and practice.
• Be the primary point of contact for technical queries and data requests relating to UK Reference Data
• Collate information for the weekly newsletter, and assist with data collection involved with Dods’ quarterly and annual book publications.
• Be vigilant for potential spikes in workload relating to the datasets (eg. Publications, Elections, Institutional restructures) and work with the Reference Data Manager to plan and ensure we meet reasonable client expectations.
• Assist in the the development of the reference datasets and related products.
• Assist in the delivery of other products produced by the department when required (e.g. during high workload periods).
• Liaise with Sales, Marketing and Monitoring teams to improve our service provision and develop content to help promote the departments work.
• Be responsible for the delivery of accurate and reliable online data, primarily within the UK Civil Service, Devolved and Local Government datasets. Maintain a high standard in accordance to update schedules, best practice and house style guidelines.

Requirements: 

• 1+ year of experience in data engineering, management, or analysis roles, particularly involving structured and unstructured data.
• Proficient in SQL and demonstrated ability to work with relational databases using tools such as Microsoft SQL Server Management Studio (SSMS).
• Experience with data visualization tools such as Power BI, Tableau, or equivalent for internal dashboards and reporting.
• Proficient using MS Office applications, especially Excel, and adept at learning new software packages
• Knowledge of API Configuration and Data Ingestion Pipelines, including RESTful APIs, ETL processes, and workflow automation.
• Ability to work accurately with strong attention to detail.
• Ability to use your own initiative and priorities tasks.
• Ability to learn, follow and ultimately develop working processes.
• Good English communication skills, written and spoken.
• Team player with a flexible approach.

Would be a plus:

• Excellent awareness and insight of UK politics and its institutional structures, particularly regarding the UK Civil Service, Devolved administrations and local Government.
• Hands-on Experience in Web Scraping and Data Extraction, including using tools/languages like Python.
• Experience with Python for Data Engineering.
• Familiarity with Cloud Platforms like Azure, AWS, or GCP, particularly their data services.

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

N-iX is looking for Senior/Lead .NET Full Stack Engineer to join our team. The project uses cutting-edge technology, and as such, we encourage our Developers to stay ahead of current trends and best practices. Ideally, we’d like a candidate that reflects this, with a keen interest in the latest frameworks and technologies. The primary focus will be to build robust and scalable back-end for the Product using .Net Core 2 and Azure technologies. The work environment is Agile Scrum, with Scrum teams operating in 2 week sprints. This is an opportunity to be part of a fun, lively development team, with good team spirit and a willingness to create good software.

About the client: 

Headquartered in London, our Client is an independent software vendor and a leading global provider of software solutions for Enterprise Architecture, Business Process Analysis and Application Portfolio Management. The Client has customers spanning the Americas, EMEA, Australasia and Asia-Pacific regions as well as all verticals sectors, both government and commercial. Core capabilities provided by the Product include an enhanced Microsoft Visio diagramming interface, a powerful central repository for all enterprise architecture or business process models and documentation, and a range of tools for visualization, analysis and decision-making.

Responsibilities:

• Working in a Scrum Team as a Full Stack lead developer
• Developing middleware for SaaS multi-tenant web application using .Net Core technologies
• Working with C#, SQL and Graph DBs in an Azure Microservice environment
• Formulating solutions to technically challenging requirements
• Collaborating with the Product Owner to define and refine Story Acceptance Criteria
• Selecting Stories from the Backlog with the Team for each Sprint
• Adhering to and promoting existing coding standards and practices
• Code reviewing team members and guiding S.O.L.I.D principles in the team
• Collaborating on architecture design and technology choices

• Mentoring, conducting performance reviews, and managing team members as a team lead

   

Requirements:

• 5+ years in web application development
• Expert experience in C#/.Net
• Knowledge of React 
• Technical leading experience
• REST-based API design and development
• MS SQL and Cosmos DB database technologies
• Azure technologies

• Experience with integration testing

   

As a plus:

• Knowledge of Azure DevOps is a good asset
• Basic Experience with MS SharePoint
• Collaborative but decisive personal style
• Experience working in a Micro-front ends and/or Micro-services environment

• Understanding of working with CI/CD

   

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

About the Project
We are developing an innovative video surveillance solution for the railway industry, aimed at making train journeys safer and more efficient. The system will support operators, fleet managers, and security teams in monitoring operations, ensuring compliance with safety standards, and responding quickly to incidents.
This is a strategic, high-impact initiative with strong visibility, offering an opportunity to work with modern technologies in a complex domain where performance, security, and reliability are crucial.

Responsibilities
Design and implement backend services in Golang, focusing on video recording, playback, and data management.
Integrate external systems and metadata sources (e.g., GPS, IBIS-IP, ITxPT) into the solution.
Develop and optimize APIs for communication with fleet management and monitoring systems.
Work with video streaming and processing pipelines (FFmpeg/GStreamer) to ensure stable recording and playback.
Ensure system performance, reliability, and security across all components.
Contribute to database design and optimization using SQLite.
Support architectural improvements and contribute to scalability and maintainability.
Take part in code reviews, testing, and agile development processes.
Work closely with the team to deliver features from concept to deployment.

Requirements
5+ years of professional experience with Golang.
Proven experience with video processing technologies (FFmpeg, GStreamer, or equivalent).
Strong knowledge of network protocols: RTSP, ONVIF, HTTPS (WebRTC experience is a plus).
Hands-on experience with SQLite or similar lightweight relational databases.
Practical experience building REST APIs and integrating with external systems.
Solid understanding of security best practices (TLS/HTTPS, AES-256, firewall rules, authentication).
Strong debugging skills with a focus on video transmission, recording stability, and network protocols.
Familiarity with CI/CD pipelines and Git-based workflows (Azure DevOps preferred).
Ability to work with modular architectures and maintain high code quality in long-term projects.

Nice to Have
Background in embedded systems or edge computing.
Experience with adaptive streaming (HLS/DASH) or WebRTC.
Familiarity with Prometheus, Grafana, or other observability platforms.
Previous work in transportation, safety-critical, or surveillance systems.

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

About client

Our client is an award-winning global tax services and software provider, is the largest company in the world dedicated exclusively to business taxes. With global headquarters in Dallas, Texas, the company provides an integrated suite of federal, state, local, and international tax services on a multijurisdictional basis, including tax recovery, consulting, advocacy, compliance, and technology services. Our client is a seven-time recipient of the International Service Excellence Award from the Customer Service Institute of America (CSIA) for its commitment to world-class client service.

Responsibilities:
• Design, build, and maintain efficient, reusable, and reliable code
• Contribute to the best possible performance, quality, and responsiveness of applications
• Identify bottlenecks and bugs, and devise solutions to mitigate and address these issues
• Help maintain code quality, organization, and automation

Requirements:
• Minimum 3 years of commercial experience as a PHP/Laravel developer
• Experience working in the finance domain (or at least education in finance) would be an advantage
• At least upper-intermediate English level
• Solid knowledge and experience with PHP and the Laravel framework
• Good understanding of JavaScript (ES6, TypeScript), HTML and CSS
• Confident knowledge of Object-Oriented Design principles
• Experience with LAMP stack (Linux, Apache, MySQL, PHP)
• Experience working with YAML and XML documents and files
• Experience working with 3rd party APIs and web services
• Skilled in using Git or another version control system
• Good theoretical understanding of software development
• Experience working in an Agile (preferably SCRUM) environment
• Strong communication skills
• Team player, responsible, and hardworking

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

We are seeking a talented and experienced Middle Automation QA  Engineer to join our dynamic development team. 

About Us:

The 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 a 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 a customer defines the pillars of our collaborative and unified global culture. We're looking for people that will drive team success and collaboration across the project. If you’re enthusiastic about innovative approaches to problem-solving, we would love to speak with you about joining our team!

Responsibilities: 

• Design, develop (TypeScript) and implement automation tests in all components of SentinelOne products with main focus on our SAAS platform and its EndPoint Protection part (e.g. API testing, E2E testing, backend and infrastructure testing, etc.)
• Testing the quality of SentinelOne solutions
• Triage and automate the triaging of test execution results
• Ensure coverage on critical components and close any test gaps that have been identified
• Work closely with other automation engineers, developers and product managers to ensure high quality products

 Requirements: 

• Proven experience in automation development testing multi-layered products
• Previous experience in testing SAAS products (cloud based) and microservices architecture
• Automation experience in TypeScript using Playwright framework
• Ability to reproduce issues and work closely with development to resolve
• Debugging skills and ability to investigate and triage difficult problems
• Experience in SW validation methodologies and concepts, testing and integration
• Strong self-management capabilities: proactive, initiative, self-learner, team player
• Experience with building and maintaining Jenkins jobs

Nice to have: 

•  Basic experience with Python using Pytest framework

N-iX is looking for an experienced Senior Java Engineer + React (AI platform) to join our development team.

Our customer–integrated Shipping Services has set itself apart as an independent carrier with a fresh, unique approach. His strategy as a global niche carrier offers distinctive advantages to customers worldwide. We have created a smart, efficient network that ensures stable, reliable services; and we have made it our mission to focus on the needs of our customers, which stand at the heart of all our decisions. The main idea of our product operates in select trades, where it has a competitive advantage and where it can provide superior service. We maintain a flexible partnership approach with other major carriers, and our new line structure is a much-needed alternative to customers concerned about the current alliance-dominated market.

Responsibilities:

• Hands-on full-stack development of innovative applications

• Owning the entire development cycle, including design, architecture, development, and DevOps

   

Requirements:

• 6+ years of experience in the following technologies: Java (must have), Spring.
• 2+ years of experience with Python.
• 2+ years of experience in FE, mainly React (must have), and other modern JavaScript frameworks/libraries.
• Experience with LLMs/AI/Prompt Engineering/MCP.
• Experience with Functional Programming and Java Streams.
• Experience with developing a reactive UI (Reactive JS).
• 2+ years of experience in TDD/BDD development in the following frameworks: Junit, Jasmin, Mockito, Protractor/Selenium
• 2-3+ years of experience in micro-services-based architecture and tools (Spring Boot/Cloud)
• Experience in designing, developing, and deploying cloud/hybrid-based solutions.
• Familiarity with the following design concepts: micro-services, service discovery, circuit breaker.
• Self-starter with the ability to appropriately prioritize and plan complex work in a rapidly changing environment.
• Versatility and the capability to switch easily between different tasks and technologies. 
• Experience in assessing a broad range of information solutions and products.
• Strong critical thinker with problem-solving aptitude.
• Advanced or higher Ukrainian language 
• At least Upper intermediate English - verbal and written

N-iX is looking for Senior React Engineer to join our team! Our customer is a global marketplace for savings and investments, providing savers with effortless access to high-yield savings accounts and investment options from over 400 partner banks worldwide. It eliminates geographic limitations, ensuring transparency, convenience, and competitive rates. For banks, it offers cost-efficient deposit funding and innovative Banking-as-a-Service solutions.

IPP Consolidation is one of the two agile teams in the Investment and Pension Products working on core initiatives to re-build the pension products on to the BIPS platform. Their mission is to consolidate and stabilise Investment and Pension products into a more effective stack, to strengthen and simplify our offerings.

7 team members working collaboratively in a cross-functional setup.

Must-Have Skills & Technologies:

• 6+ years of strong React Expertise – Deep understanding of React, hooks, functional components, and performance optimization.
• Proficient with NextJS
• Experience in Static Site Generators
• Strong experience in React Native (2+ years)
• Testing Jest, React Testing Library, WCAG standards, ARIA roles
• JavaScript & TypeScript – Strong knowledge of ES6+ features and TypeScript for scalable applications.
• API Integration – Expertise in RESTful and GraphQL APIs, including error handling and caching.
• Performance Optimization – Experience in lazy loading, memoization, code splitting, and Webpack/Vite optimizations.
• CI/CD & Tooling – Familiarity with GitHub Actions, Jenkins, or GitLab CI for automated testing and deployments.
• Styling & Design Systems – Experience with CSS-in-JS (Styled Components, Emotion) or utility frameworks like Tailwind CSS.
• Accessibility & SEO – Knowledge of WCAG standards, ARIA roles, and SEO best practices.
• Agile & Collaboration – Comfortable working in Agile teams and collaborating with designers, backend engineers, and product managers.
• Version Control – Strong Git skills, including branching strategies and code review best practices.
• English - Upper intermediate

• Bachelor’s degree in Engineering or Computer Science

   

Nice-to-Have Skills:

• Monorepo Experience – Familiarity with tools like Turborepo, Nx, or Yarn Workspaces for managing monorepos.

   

Role & Responsibilities:

• 20-30% React native task
• 70-80% new features, 40-20% regactoring, bug fixing, support
• UI/UX Development – Build responsive, visually appealing, and accessible user interfaces.
• Coding & Development – Write clean, maintainable code using modern frameworks (React, Vue, Angular).
• Performance Optimization – Ensure fast load times, efficient rendering, and smooth interactions.
• API Integration – Work with REST/GraphQL APIs and manage state effectively (Redux, Context API, etc.).
• Cross-Browser Compatibility – Ensure consistent performance across all devices and browsers.
• Testing & Debugging – Write unit and integration tests (Jest, Cypress) and fix bugs efficiently.
• Collaboration – Work closely with designers, backend engineers, and product teams.
• CI/CD & Deployment – Implement build tools, CI/CD pipelines, and monitor production applications.
• Security & Best Practices – Follow security, accessibility (WCAG), and SEO standards.

• Mentorship & Innovation – Guide junior developers and stay updated with new technologies.

   

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

We are looking for an Engineering Leader (mobile stream) to join our team.

Responsibilities:

• Drive end-to-end ownership of the software development lifecycle
• Design and implement solutions ranging from critical maintenance work to new feature development based on UAT feedback and business priorities
• Create and maintain comprehensive technical documentation including architecture diagrams, operational runbooks, troubleshooting guides, and decision logs to ensure knowledge retention
• Build quality-first mindset by integrating QA practices throughout maintenance workflow to maintain system stability and reliability
• Lead and mentor the team, fostering a culture of technical excellence, ownership, and continuous improvement
• Serve as the primary technical point of contact for the client, ensuring clear communication, effective expectation management, and alignment on both business and technical goals
• Сombine hands-on technical work with leadership duties, ensuring effective technical decision-making
• Ensure implementation of engineering best practices
• Collaborate closely with product stakeholders to transform business requirements into robust and secure technical solutions
• Ensure system health and performance monitoring using modern observability tools (Grafana, GrayLog, etc.) and ensure proactive issue resolution
• Promote a product-oriented mindset within the team, focusing on delivering customer value and business impact
• Manage team performance, facilitate Agile ceremonies, and ensure timely delivery of project milestones

Requirements:

• 10+ years of software development experience
• Experience in leading development teams, monitoring, and verifying SDLC metrics.
• Extensive experience working with mobile technologies – Android Open Source Project
• A big plus: 3+ years of full-stack development experience with Node.js, or proficiency in another backend programming language
• Strong leadership skills
• Wide experience working with different architectural frameworks and notations
• Understanding and experience in developing and deploying microservices
• Experience developing REST interfaces, OpenApi
• OOP, OOD, DDD, Design Patterns proficient
• Working knowledge of relational databases, NoSQL technologies
• Experience with different cloud service providers – preferably AWS
• Working knowledge of Kubernetes
• Familiar with various monitoring tools like GrayLog, Grafana
• Working experience in an Agile environment, a clear understanding of Agile methodologies and mindset, and development practices applicable to them
• Upper-Intermediate/Advanced English level

Nice to have:

• Working with security aspects of business functionality, cross-cutting approaches to secure and limit public access
• Experience leading knowledge transfer initiatives between different teams
• Experience with web frontend development

Product-oriented mindset is a must, excellent communication, organizational, and facilitation skills, focus on team results, leadership qualities, and resilience.

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

The core application is Miacademy (miacademy.co), one of the most interactive and fastest-growing online learning platforms for children from Kindergarten through 8th grade. We've also just released an exciting addition: MiaPrep (miaprep.com), a version of our product for high schoolers. Our approach is to implement new and innovative ways in which children can learn online. For example, we are currently working with a research team to evaluate the application of an Elo system in education with the purpose of providing the right level of challenging tasks to each member.

Miacademy and MiaPrep offer many sophisticated features to their customers, which, in turn, require advanced approaches to software engineering. Our team includes winners of international programming competitions, accomplished mathematicians, and leading researchers in the area of educational games.

Key Responsibilities

• Develop robust and scalable web applications using Vue.js
• Collaborate with the design and product teams to translate wireframes and mockups into functional components
• Implement responsive designs and ensure cross-browser compatibility
• Write clean, maintainable, and efficient code using best practices and coding standards
• Conduct code reviews and provide constructive feedback to improve code quality and maintain consistency
• Optimize application performance and identify areas for improvement
• Work closely with backend developers to integrate frontend components
• Troubleshoot and debug issues, addressing bugs and performance bottlenecks
• Stay updated with the latest frontend development trends and technologies, sharing knowledge and insights with the team.

Requirements

• Vue.js (or similar reactive frameworks)
• Solid experience in developing web applications
• Excellent understanding of web technologies such as HTML5, CSS3, and JavaScript
• Strong problem-solving and analytical skills, with the ability to quickly identify and resolve issues
• Good communication skills and the ability to work collaboratively in a team environment
• Ability to adapt and learn new technologies and frameworks as required.
• Proficiency in developing and updating test documentation, as well as conducting test runs.
• Understanding of client-server architecture.
• A solid understanding of QA processes within the Software
• Development Life Cycle (SDLC).
• Strong analytical skills, a keen eye for detail, and a proactive approach.
• Upper-intermediate proficiency in both written and spoken English, with
• effective communication skills.
• Strong team player.
• Open to giving and receiving feedback.

Good to have experience in:

• PostgreSQL
• Docker/Kubernetes
• TypeScript

N-iX is a software development service company that helps businesses across the globe develop successful software products. Founded in 2002 in Lviv, N-iX has come a long way and increased its presence in nine countries - Poland, Ukraine, Sweden, Romania, Bulgaria, Malta, the UK, the US, and Colombia. Today, we are a strong community of 2,000+ professionals and a reliable partner for global industry leaders and Fortune 500 companies. Currently N-iX is looking for a Senior FullStack Software Engineer to join one of our projects. 

Our customer is the European online car market, with over 30 million monthly users and a presence in 18 countries. You will work alongside some very talented and dedicated individuals, you will be part of a cross-functional agile team that contributes to building the digital platform and play a pivotal role in shaping the future of online car markets and enhancing the user experience for millions of car buyers and sellers.

Responsibilities:

• Taking part in daily agile ceremonies, brainstorming on innovative ideas that challenge the status quo, and helping to implement solutions. 
• Acting as an advocate for ownership & highest code quality, as well as contributing to the health of the infrastructure. 
• Raising the bar and elevating the team by sharing knowledge and best practices, while always seeking improvements and facilitating progress. 
• Engage in the full software lifecycle  - from design and development to deployment, monitoring, and support.

• Build user-centric web applications by translating mockups into accessible, performant front-end components.

   

Requirements:

• Be able to work within Canadian Timezone (EDT).
• 4+ years developing reliable, highly available, and scalable software.
• Strong proficiency with backend development (Typescript/Node.js, Python). 
• Strong understanding of software architecture and design patterns. 
• Firm grasp of clean code principles and coding standards. 
• Hands-on experience in Django and/or FastAPI. 
• Experience with APIs and developing in a service-based application environment 
• Good knowledge of SQL & NoSQL datastores (Postgres, Redis). 
• Strong proficiency with frontend development (HTML, CSS, JavaScript/Typescript). 
• Strong proficiency with Vue.js or other component-based frameworks. 
• Experience building optimized UIs for performance. 
• Knowledge of modern cloud infrastructures and tools, such as AWS and Docker. 
• Experience with AI tooling such as Copilot.  
• Proficiency with version control systems such as Git/GitHub. 
• Experience working within a formal CI/CD pipeline (we focus on GitHub Actions). 
• Experience with logging, monitoring, and alerting services like Datadog. 
• Solid approach to testing and ensuring the quality of the code of the backend and frontend. 
• Experience building and consuming APIs in service-oriented environments.
• Skilled in version control (Git) and working within structured CI/CD pipelines.
• Experience with observability tools (e.g., Datadog) for logging, monitoring, and alerting.
• Solid testing background: unit, integration, and end-to-end testing on both backend and frontend.
• At least Upper-intermediate English level

Nice to have:

• Exposure to AI-enhanced tooling (e.g., GitHub Copilot).

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

N-iX is looking for an experienced Senior Full Stack Java Engineer to join our development team.

Our customer–integrated Shipping Services has set itself apart as an independent carrier with a fresh, unique approach. His strategy as a global niche carrier offers distinctive advantages to customers worldwide. We have created a smart, efficient network that ensures stable, reliable services; and we have made it our mission to focus on the needs of our customers, which stand at the heart of all our decisions. The main idea of our product operates in select trades, where it has a competitive advantage and where it can provide superior service. We maintain a flexible partnership approach with other major carriers, and our new line structure is a much-needed alternative to customers concerned about the current alliance-dominated market.
 

Responsibilities:

• Hands-on full-stack development of innovative applications
• Owning the entire development cycle, including design, architecture, development, and DevOps
   

Requirements:

• 6+ years of experience in the following technologies: Java (must have), Spring.
• 2+ years of experience with Python.
• 2+ years of experience in FE, mainly React (must have), and other modern JavaScript frameworks/libraries.
• Experience with LLMs/AI/Prompt Engineering/MCP.
• Experience with Functional Programming and Java Streams.
• Experience with developing a reactive UI (Reactive JS).
• 2+ years of experience in TDD/BDD development in the following frameworks: Junit, Jasmin, Mockito, Protractor/Selenium
• 2-3+ years of experience in micro-services-based architecture and tools (Spring Boot/Cloud)
• Experience in designing, developing, and deploying cloud/hybrid-based solutions.
• Familiarity with the following design concepts: micro-services, service discovery, circuit breaker.
• Self-starter with the ability to appropriately prioritize and plan complex work in a rapidly changing environment.
• Versatility and the capability to switch easily between different tasks and technologies. 
• Experience in assessing a broad range of information solutions and products.
• Strong critical thinker with problem-solving aptitude.
• Advanced or higher Ukrainian language 
• At least Upper intermediate English - verbal and written

We are looking for a Engineering Leader (mobile stream) to join our team.

Responsibilities:

• Drive end-to-end ownership of the software development lifecycle
• Design and implement solutions ranging from critical maintenance work to new feature development based on UAT feedback and business priorities
• Create and maintain comprehensive technical documentation including architecture diagrams, operational runbooks, troubleshooting guides, and decision logs to ensure knowledge retention
• Build quality-first mindset by integrating QA practices throughout maintenance workflow to maintain system stability and reliability
• Lead and mentor the team, fostering a culture of technical excellence, ownership, and continuous improvement
• Serve as the primary technical point of contact for the client, ensuring clear communication, effective expectation management, and alignment on both business and technical goals
• Сombine hands-on technical work with leadership duties, ensuring effective technical decision-making
• Ensure implementation of engineering best practices
• Collaborate closely with product stakeholders to transform business requirements into robust and secure technical solutions
• Ensure system health and performance monitoring using modern observability tools (Grafana, GrayLog, etc.) and ensure proactive issue resolution
• Promote a product-oriented mindset within the team, focusing on delivering customer value and business impact
• Manage team performance, facilitate Agile ceremonies, and ensure timely delivery of project milestones

Requirements:

• 10+ years of software development experience
• Experience in leading development teams, monitoring, and verifying SDLC metrics.
• Extensive experience working with mobile technologies – Android Open Source Project
• A big plus: 3+ years of full-stack development experience with Node.js, or proficiency in another backend programming language
• Strong leadership skills
• Wide experience working with different architectural frameworks and notations
• Understanding and experience in developing and deploying microservices
• Experience developing REST interfaces, OpenApi
• OOP, OOD, DDD, Design Patterns proficient
• Working knowledge of relational databases, NoSQL technologies
• Experience with different cloud service providers – preferably AWS
• Working knowledge of Kubernetes
• Familiar with various monitoring tools like GrayLog, Grafana
• Working experience in an Agile environment, a clear understanding of Agile methodologies and mindset, and development practices applicable to them
• Upper-Intermediate/Advanced English level
• Opportunity to travel across Europe

Nice to have:

• Working with security aspects of business functionality, cross-cutting approaches to secure and limit public access
• Experience leading knowledge transfer initiatives between different teams
• Experience with web frontend development

Product-oriented mindset is a must, excellent communication, organizational, and facilitation skills, focus on team results, leadership qualities, and resilience.

We offer:

• Flexible working format - remote, office-based or flexible
• A competitive salary 
• 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

   

N-iX is a global software development service company that helps businesses across the world develop successful software products. Founded in 2002, N-iX has come a long way, expanding its presence across Europe, the US, and Latin America. Today, we are a strong community of 2,000+ professionals and a reliable partner for global industry leaders and Fortune 500 companies.
 

Role description:

Our team seeks an enthusiastic, inquisitive and self-motivated individual to join the big team. Our ideal candidate is a resourceful problem-solver with extensive experience in front-end technologies and expertise in Javascript, HTML5, CSS3/SCSS.
 

About the project:

Cleverbridge is a platform that provides global e-commerce and subscription billing solutions that help companies build long-term customer relationships and grow revenue streams. With its flexible, cloud-based billing and monetization platform, cleverbridge integrates seamlessly with client systems, simplifies subscription business models and delivers an optimized online customer experience.
 

Requirements:

• A bachelor's degree in Computer Science, Engineering, or a related field
• At least 5 years of front-end development experience
• Experience with NodeJs + React (optional ExpressJS)
• Proficiency in JavaScript, HTML5, CSS3, and SCSS
• Strong expertise in PostGreSQL / RDBMS and different persistence models would be very helpful (relational DB, noSQL approaches, Event Sourcing)
• Experience with microservices
• Experience with micro-frontends
• Know-how of building APIs from scratch
• Experience working with REST & GraphQL APIs
• Understanding of an event-driven architecture (especially concepts of event sourcing and CQRS and asynchronous messaging, i.e. Publish/Subscribe pattern)
• Knowledge of general tools in team works: JIRA, Git, Jenkins, IDEs
• Knowledge of AWS / Kubernetes would be a plus
• Profound experience with unit testing frameworks
• Knowledge of UI/UX best practices
• Experience with cross-browser and mobile optimization
• Knowledge of W3C accessibility standards
• Familiarity with website performance evaluation tools
• Understanding of frontend XSS prevention
• Experience with Python is nice to have
• Ability to turn business requirements into creative and effective solution designs
• Independent problem-solver and self-starter
• Strong collaborator and able to work with peers to bring projects to life
• Uncompromising attention to detail and commitment to quality
   

Responsibilities:

• Design and customize the web application to meet client requirements and expectations
• Ensure that frontend code is optimized for cross-browser and mobile compatibility
• Create and maintain custom front-end features that are both beautiful and functional
• Designing & developing GraphQL APIs for a modern web application
• Designing, building, and maintaining performant, efficient, reusable, and reliable code
• Requirements review, requirements development
• PCI DSS standard (four-eyes principle), QA, code review
• Writing unit and integration tests
• Problem-solving and root cause analysis
• Communicating with internal product owners and stakeholders as well as external providers
• Sharing new ideas, techniques and methodologies
• Champion coding standards and help train other developers through code reviews
• Interpret business requirements and turn them into effective solution designs
• Keep project management informed of project status and progress towards deadlines
   

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

We are seeking a Senior Full-Stack Engineer with strong expertise in React and Node.js to join our team working on innovative e-Ink based products and companion applications. In this role, you will work across frontend, backend, and integration layers, ensuring seamless interaction between an e-ink device, its cloud services, and companion apps (web and mobile).

You will contribute to both new feature development (e.g., analytics, sharing, personalization) and maintenance/stabilization activities (bug fixing, optimization, knowledge transfer). A solid understanding of secure, scalable, and performant web/mobile applications is essential.

Key Responsibilities:

• Develop and maintain web companion applications (React, TypeScript) supporting document sync, sharing, and account management.
• Implement backend services using Node.js (TypeScript) for APIs, synchronization, and user management.
• Contribute to cloud integrations (AWS-based services, Keycloak identity management, REST APIs).
• Ensure secure data handling (encryption, authentication, GDPR compliance).
• Collaborate with mobile engineers to align React Native components with device and cloud integrations.
• Support knowledge transfer activities: documenting flows, APIs, and technical processes.
• Participate in ADR decisions, code reviews, CI/CD pipelines, and quality-first practices.
• Work closely with QA engineers on automation strategy, integration tests, and end-to-end flows.
• Optimize performance for content sync, large files (PDF/EPUB), and offline/online modes.

Required Skills & Experience:

• 5+ years of professional experience in full-stack development.
• Strong proficiency in React (Hooks, Context, Redux or similar state management) and Node.js (TypeScript, Express/NestJS).
• Experience with RESTful API design and integration.
• Hands-on knowledge of secure coding practices (JWT, OAuth2, TLS, input validation).
• Familiarity with MongoDB, SQL, or other database systems.
• Experience with CI/CD pipelines (GitLab, Docker, Kubernetes).
• Solid understanding of Agile practices and working in distributed teams.
• Upper-Intermediate English level.

Nice to Have:

• React Native experience (building cross-platform mobile apps).
• Familiarity with offline-first architectures and sync mechanisms.
• Knowledge of cloud services (AWS, Keycloak, HawkBit).
• Experience with EPUB/PDF libraries, document rendering, or file-sharing platforms.
• Prior work on IoT, embedded, or device-companion ecosystems.

Personal Attributes:

• Strong ownership mindset, able to work across frontend and backend with equal confidence.
• Comfortable collaborating in multi-vendor and multi-technology environments.
• Product-oriented, with a focus on delivering business value and user experience.
• Curious and adaptable — quick to learn new frameworks and approaches.

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