Jobs Backend

N-iX is looking for a highly skilled Middle Java Engineer with additional experience in Python to join our team. The primary focus will be on building and maintaining high-performance, scalable, and secure applications using Java, while leveraging Python for automation, scripting, data processing, or integration tasks. This role is ideal for an engineer who is strong in Java development but comfortable applying Python as a supporting language where needed.

Responsibilities

• Design, develop, test, and maintain applications and services using Java as the primary technology stack.
• Write clean, efficient, and maintainable code following best practices and coding standards.
• Use Python for automation, data manipulation, system integration, and auxiliary services.
• Optimize applications for performance, scalability, and security.
• Troubleshoot, debug, and resolve technical issues.
• Communicate with internal product owners and stakeholders
• Document technical solutions and maintain up-to-date system knowledge.

Requirements

• 3+ years of professional software development experience with Java (Spring, Spring Boot, Hibernate).
• Experience with Python (scripting, automation, or backend services).
• Experience with RESTful APIs design and integration.
• Experience with relational database systems (preferably MySQL).
• Experience with cloud platforms (preferably GCP)
• Strong understanding of Agile methodologies, especially of Scrum framework
• Strong problem-solving and analytical skills.
• Upper-Intermediate English or higher (both written and spoken).

Nice to Have

• Knowledge of messaging systems (RabbitMQ, etc.).
• Knowledge on DevOps process (CI/CD stages, gitflow, devops as shared responsibility
• Experience with AI tools (e.g. Claude Code etc.)
• Experience with infrastructure implementation (Kubernetes, Docker)
• HIPAA Awareness

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

A potential invitation to potential minds!

4K-Soft is People. People are most important to us. People are at the heart of every connection we build. Come and join 4K-Soft, where human minds come together to pave the way for the future. We offer a variety of full-time jobs, training programs and internships. Only imagine, how you can help our company and start your career with 4K-Soft!

We are looking for a PHP Developer.

What we expect from you:

2+- years of commercial experience

PHP 7.3/ PHP 7.4

Yii2 framework

jQuery

Bootstrap

LAMP

OpenServer

Apache2

Nginx.

We offer:

Competitive level of remuneration

Convenient work schedule, paid vacation and sick leaves

The opportunity to grow professionally by participating in the implementation of interesting and complex projects, as well as showing personal initiative.

🟢 At Dev.Pro, we work on projects that impact millions of people around the world — but we know it’s the people behind the tech who make it all happen. We truly value what makes each person unique and are building a workplace that’s inclusive, friendly, and supportive.

We invite a Senior Software Engineer with strong Node.js expertise and solid AWS knowledge to join our team. You’ll work with a trusted leader in the Point-of-Sale industry with over 100,000 global installations. In this role, you’ll contribute to our client’s new initiative focused on creating data mapping between diverse menu order systems and integrating two distinct APIs to ensure seamless and accurate data transfer.

🟩 What’s in it for you:

• Collaborate on a high-load, technically challenging backend project, expanding your expertise in API integration, data mapping, and data transformation
• Contribute to a global tech platform offering robust solutions for the restaurant and food service industry
• Influence technical best practices and mentor engineers, promoting a culture of quality and continuous improvement

✅ Is that you?

• 4+ years of commercial backend development experience with deep expertise in Node.js and TypeScript in production environments
• 2-3+ years of AWS experience (EC2, ECS, Lambda, SQS/SNS, CloudWatch, etc.)
• Solid experience with MongoDB
• Proven experience designing, building, and maintaining RESTful APIs
• Strong understanding of backend architecture and service design
• Experience writing unit and integration tests
• Experience with CI/CD pipelines and automated deployments
• Strong ownership mindset and ability to work independently, resolve complex issues, and deliver solutions
• Excellent communication and cross-functional collaboration skills
• Upper-Intermediate+ English level

Desirable:

• Experience mentoring or providing technical guidance to engineers

🧩Key responsibilities and your contribution

In this role, you’ll contribute to the design, development, and continuous improvement of high-loaded backend systems and services, ensuring technical quality and delivering bullet-proof solutions.

• Design, build, and maintain high-loaded backend systems and APIs using Node.js and AWS
• Develop new backend features and enhancements for production systems
• Support and troubleshoot production systems to ensure reliability and performance
• Identify and reduce technical debt and implement improvements to maintain code quality and reliability
• Write and maintain unit and integration tests to ensure code quality
• Collaborate with cross-functional teams to define requirements and deliver bullet-proof solutions
• Contribute to the continuous improvement of backend architecture and development practices
• Create and maintain clear, organized development documentation

🎾 What’s working at Dev.Pro like?

✔️ 30 paid days off per year — take them whenever you want for vacation, holidays, or personal time
✔️ 5 paid sick days, up to 60 days of medical leave, and 6 paid days off per year for major family events like weddings, funerals, or the birth of a child
✔️ Partially covered health insurance after the probation, plus a wellness bonus for gym memberships, sports nutrition, and similar needs after 6 months
✔️ Grow your skills with English lessons, online training, conferences, and the option to explore new career paths

Our next steps:

✅ Submit a CV in English — ✅ Intro call with a Recruiter — ✅ Internal interview — ✅ Offer

We are elai.io, an innovative AI-driven startup specializing in video generation. Recently acquired by Panopto, we’re now part of a growing team of around 250 professionals focused on advancing learning through powerful, interactive video technology.

We are looking for a hands-on Software Development Engineer in Test to design and implement our integration test automation strategy. The goal of this engagement is to build reliable integration coverage for critical audio/video flows, reduce regressions, and increase release confidence while enabling developers to own and maintain integration tests long term.

Contract details

• Duration: 3 months;
• Focus: integration test automation strategy implementation, CI/CD integration, and developer enablement;
• Engagement type: B2B contract.

Scope of work

1. Implement automated integration coverage across key system boundaries:
   •  API integration tests for Express + MongoDB (Supertest + isolated DB)
   •  Frontend-to-backend integration tests for critical flows
   •  Integration coverage for audio/video pipelines and artifacts;
2. Build and maintain the integration automation infrastructure;
3. Integrate tests into CI/CD as defined in strategy:
   • PR gates (API integration)
   • staging gate (integration smoke / critical flow suite);
4. Enable the dev team to own more integration tests:
   • create clear documentation (how to write/run integration tests, patterns, examples, DoD expectations)
   • prepare templates/snippets for common integration test scenarios
   • run knowledge-sharing sessions / workshops and support developers during adoption
   • actively encourage and coach developers to write integration tests as part of feature work.

Required skills

1. Strong hands-on experience implementing integration test automation (API + system/service integration);
2. Solid JavaScript and TypeScript testing experience in React and Node.js environments;
3. Strong experience with Playwright (for integration-level smoke flows where needed);
4. Experience with API testing (Supertest or equivalent) and database test isolation (MongoDB);
5. Proven experience validating audio and video artifacts in automated tests;
6. CI/CD experience, including test gates, parallel execution, artifacts, and stable pipelines;
7. Strong communication skills with the ability to document clearly and guide engineers toward better testing practices.

We offer

• Competitive salary based on qualifications and contributions
• Flexible working hours
• Opportunity to work with a highly qualified international, friendly team
• Fully remote work

Elogic Commerce is looking for Magento Full-stack Developer to join our team!

Requirements:

• 3+ years of experience in Magento development, with a strong understanding of Magento architecture, APIs, and data models.
• Experience with Hyvä
• Proficiency in PHP, MySQL, JavaScript, HTML, CSS, and other web technologies.
• Strong understanding of e-commerce concepts and best practices.
• Experience with version control systems, such as Git.
• Adobe Commerce certification is a strong plus.
• Excellent problem-solving skills and attention to detail.
• Strong communication and interpersonal skills.
• Ability to work independently and as part of a team in a fast-paced environment.
  
  Responsibilities:
• Design and implement custom Magento themes, modules, and extensions.
• Integrate Magento with third-party systems, such as payment gateways, shipping providers, and ERP systems.
• Optimize website performance and ensure high availability, scalability, and security.
• Collaborate with UI/UX designers to create intuitive and responsive user interfaces.
• Conduct code reviews, provide technical guidance, and mentor junior developers.
• Stay updated on Magento best practices, trends, and new technologies.
   

📍 Czech Republic / Hybrid (EU) (Once per month you need to be in Prague)

💼 Full-time / B2B

We are looking for an experienced PHP Backend Developer to join our Checkout team and work on a modern e-commerce platform.

If you enjoy building scalable solutions, working with Magento 2, and being part of an international environment — this role could be a great fit.

🔧 Responsibilities

• Develop and maintain backend functionality for an e-commerce platform
• Implement new features within the Magento 2 ecosystem
• Collaborate with an international team on complex e-commerce solutions
• Ensure high code quality, structure, and maintainability
• Contribute to improving processes, automation, and performance
• Stay up-to-date with modern development practices and technologies

⚙️ Requirements

• 2+ years of experience with Magento 2 (mandatory)
• Strong knowledge of PHP and MySQL
• Understanding of backend development best practices
• Good level of English (daily communication & documentation)
• Ability to work independently and proactively
• Experience working in a remote team environment

➕ Nice to have

• Experience with GraphQL
• Familiarity with Xdebug and PHPStorm
• Experience with Git and version control
• Understanding of Scrum / Agile workflows
• Experience with Docker, Kubernetes
• Knowledge of Golang / microservices architecture

UAPP team needs a Backend Developer 

Requirements:

• experience with Java or other backend languages;
• strong understanding of OOP principles and SOLID;
• experience with Spring Boot or similar backend frameworks (e.g. NestJS, Django, etc.);
• knowledge of SQL, NoSQL and ORM tools (JPA / Hibernate or equivalents);
• experience in developing REST APIs;
• basic knowledge of algorithms and data structures;
• strong ability to learn new technologies and adapt to a new tech stack.

We offer:

• career and professional growth;
• decent salary;
• interesting projects in a professional team;
• trainings, seminars, meetings and conferences at company expense;
• pleasant and friendly working atmosphere.

UAPP is an IT company, established in 2018. We provide a full range of software development services, websites and mobile applications. Consulting, design, development, implementation, support and marketing — we do everything to achieve our clients’ business goals.

Our company's key to success is a team of professionals and like-minded people with solid practical experience in the field of project implementation for businesses and their own projects.

We offer services that are designed to take a client’s business to a new level and do everything to provide quality, innovation and creativity using the latest technology solutions.

We are looking for a Senior Golang Developer

Key Responsibilities:
- Design, build, and maintain backend services using Go
- Develop and optimize database schemas, queries, and migrations in PostgreSQL
- Implement and manage event-driven architectures using Kafka
- Contribute to microservices architecture and API design
- Collaborate daily with cross-functional team members in an agile environment
- Ensure high performance, scalability, and reliability of backend systems
- Participate in code reviews and contribute to engineering best practices.

Requirements:
- Strong production experience with Go (not limited to side projects)
- Solid expertise in PostgreSQL, including schema design, query optimization, and migrations
- Hands-on experience with Kafka and event-driven systems (reliable message production/consumption)
- Good understanding of microservices architecture and API design principles
- Experience working in collaborative, product-oriented engineering teams
- Strong communication skills and ability to work in a distributed environment

Nice to Have:
- Experience in fintech or other regulated industries
- Familiarity with CI/CD pipelines and infrastructure-as-code
- Previous experience working in cross-functional product teams (beyond backend-only environments)

-Full-time, long-term
-Level - Senior
-English - B2+

QIT Software is looking for a Senior PHP Developer to join our team. You'll own the maintenance, modernization, and evolution of a core billing platform built on a large-scale PHP monolith. This is a high-traffic, business-critical system running on Kubernetes infrastructure. You'll troubleshoot production issues, drive performance and scalability improvements, and contribute across the full development lifecycle -- from design through deployment.

Details:
- Schedule: Full-time, remote
- Client: USA
- Duration: long-term
- Tech stack: PHP, MySQL, AWS, Docker, etc.
Requirements

- 5+ years of strong professional PHP experience
- Solid foundation in OOP patterns, Clean Code, and SOLID principles
- Experience maintaining and improving complex legacy systems
- Strong MySQL skills -- writing efficient, high-performance queries
- Hands-on Docker and AWS experience
- Experience with AI-assisted development tools (Cursor, Claude Code, or similar)
- Business-level English (written and spoken)
- Strong debugging, analytical, and problem-solving skills

Responsibilities

- Maintain, modernize, and evolve the billing platform and its components
- Diagnose and resolve high-impact production issues in a high-traffic environment
- Drive improvements in performance, scalability, and reliability
- Produce clear technical documentation for existing and new systems
- Promote knowledge sharing and best practices across the team

Would be a plus

- Kubernetes and Helm experience
- Queue-based or asynchronous systems
- Non-relational databases
- CI/CD pipelines
- Observability tools (Datadog, Grafana)

Work conditions

- The ability to work remotely from anywhere in the world;
- Flexible work schedule, no micromanagement, no strict deadlines and free overtime work;
- Work in European and American products with a modern technology stack in different industries (Finance, Technology, Health, Construction, Media, etc.);
- Revision of wages every year or on an individual basis;
- Accounting support and full payment of taxes by the company;
- 100% compensation for remote English lessons;
- 15 paid leaves (PTO) and public holidays.

We are looking for a talented Blockchain Engineer to design, develop, and maintain internal platforms, with a primary focus on backend development using Node.js.

In this role, you will also contribute to front-end features and blockchain-integrated systems. You will be responsible for building scalable services, integrating Web3 technologies, and supporting workflows for decentralized applications.

Responsibilities:

• Design and develop backend services using Node.js
• Integrate blockchain/Web3 technologies into existing systems
• Build and maintain scalable APIs and microservices
• Collaborate on front-end features when needed

• Ensure performance, security, and reliability of applications

   

Requirements:

• 5+ years of experience in software development
• Strong experience with Node.js
• Experience with blockchain technologies (Ethereum, smart contracts, Web3.js, etc.)
• Understanding of decentralized applications (dApps)
• Experience with REST APIs and microservices architecture

• Basic front-end knowledge (React or similar)

   

Nice to have:

• Experience with Solidity
• Experience with DeFi / NFT projects

• Familiarity with cloud platforms (AWS, GCP)

   

We offer:

• Remote-friendly environment
• Competitive compensation
• Work on innovative Web3 products

Looking for a Middle/Middle Strong Fullstack Java Developer to join our team. We are building a platform for fast and convenient purchase of tickets for various music and sport events. Users are provided access to a wide selection of concerts where they can find performances by their favorite artists, review event dates and locations, and buy tickets in real-time.

Requirements:

• 3+ years of experience in Java development.
• 2+ years of Spring framework and building Spring web applications.
• Understanding and experience developing and deploying microservices.
• Experience developing integration layers (using REST interfaces, OpenApi, Kafka, GraphQL).
• Commercial experience with frontend development (e.g., React, Angular, or similar frameworks).
• Excellent design, coding, and debugging skills.
• OOP, OOD, Design Patterns proficient.
• Knowledge of relational databases (preferably PostgreSQL).
• Experience with Docker.
• English — at least an Upper-Intermediate level.

Nice to have skills:

• Knowledge of non-relational databases.
• Experience in developing multi-threaded applications.
• Experience with AWS services (ECS, Lambda, Aurora).

Responsibilities:

• Produce code using Java best practices.
• Write unit tests and code that adheres to coding standards.
• Provide technical support.
• Work both independently and in close collaboration with others in the team; effectively communicate with geographically distributed team members.
• Make recommendations for the improvement of the system and development process to increase productivity.
• Identify, monitor, and resolve project-related issues.

Interview stages:

• HR-interview (30 minutes).
• Technical interview (1 hour).
• Interview with the customer (1 hour).
• Job offer🎉🎉🎉

We offer:

• Competitive salary + bonuses.
• Challenging tasks and projects.
• Personal growth.
• Flexible working hours.
• New hardware.
• Free English lessons.
• Availability of generators and Starlinks in the office.
• Small gym and table tennis in the office.
• Adjustable height tables.
• Regular office fruit delivery and other benefits.

Let’s create value together!

Please note, 2+ years of experience in C++ is a mandatory for this position.

Requirements:

• 7+ years of hands-on commercial software development experience
• 3+ years of strong Scala experience
• 2+ years of solid C++ experience
• Upper-Intermediate (B2+) English with confidence in active communication (meetings, discussions)
   

Responsibilities:

• Take full ownership of SQL acceleration features — from architecture and design to implementation and measurable performance gains
• Design, build, and optimize Big Data processing algorithms using Scala, Java, and C++
• Develop high-performance, low-latency components at the intersection of Big Data and compiler technologies
• Work with custom DSLs and code generation frameworks to extend and enhance query execution capabilities
• Contribute to cross-language integrations (Java ↔ C++ via JNI) and drive system-wide performance improvements
  
   

Looking for a Django/DRF Developer to join the Dataforest team. If you are looking for a friendly team, a healthy working environment, and a flexible schedule ‒ you have found the right place to send your CV.

     Skills requirements:

• 2 + years of experience with Django and it's components;
• Experience with RESTful APIs, DRF and related libraries;
• Experience with Celery and async task management;
• Experience with SQL and query optimisation;
• Experience of writing tests;
• Able to work independently and excellent in communicating challenges and issues;
   

     Optional skills (as a plus):

• Experience with AWS services (EC2, API Gateways, Lambda, SQS);
• Experience with NoSQL databases (Redis, Elasticsearch, etc.);
• Experience of end-to-end implementation for new functionality;
• Experience with payment systems integrations (Stripe, Shopify, Recurly, Paypal, Braintree, etc.);
• Experience with chargeback management tools (Ethoca, RDR, CDRN, etc.);
• Understanding how to handle high load on projects;
  
  Key responsibilities:
• Design, develop and maintain payment gateway and other integrations;
• Design and develop new features and maintain existing functionality.
• Design and develop web applications using Python/Django/Celery.
• Design, develop and maintain RESTful APIs using Django Rest Framework (DRF).
• Write clean and well-structured code that is easy to read and maintain;
• Write and maintain technical documentation.
• Write and maintain unit tests to ensure code quality.
• Optimize and maintain the security, performance, and usability of the applications.
• Collaborate with the PM/Frontend/DevOps/QA and others team members.
  
  We offer:
• Great networking opportunities with international clients, challenging tasks;
• Building interesting projects from scratch using new technologies;
• Personal and professional development opportunities;
• Competitive salary fixed in USD;
• Paid vacation and sick leaves;
• Flexible work schedule;
• Friendly working environment with minimal hierarchy;
• Comfortable, spacious and well-equipped office in the city center;
• Team building activities, corporate events.

Проєкт комерційних закупівель компанії E-Tender запрошує в свою Команду Full Stack Developer`а, яка/ий підсилить технічну команду та працюватиме над  розвитком платформи комерційних закупівель.

 Requirements: 

• 2+ years experience 
• C#; .NET Framework; 
• ASP.NET MVC + Web API; 
• Entity Framework; 
• MS SQL Server + SQL Profiler; 
• Message queues(Preffered RabbitMQ Masstransit); 
• Elasticsearch; 
• Angular 2+; 
• Angular centralized state management / ReactiveX / NgRx / RxJS; 
• Git; 
• Javascript/TypeScript + DOM; 
• HTML, CSS, SASS; 
• Experience with Jira or other project management systems, use Time Tracker. 

Responsibilities: 

• Implementation of new features of company projects in a timely and professional manner; 
• Close cooperation with project team members; 
• Use Jira, Time tracker; 
• Perform other related duties as required; 
• Front end/back end 50/50. 

Meet the YozmaTech

YozmaTech isn’t just another tech company - we’re a global team of go-getters, innovators, and A-players helping startups and product companies scale smarter and faster. We build dedicated development teams across 10+ countries, creating strong, long-term partnerships based on trust, transparency, and real impact. Here, every idea counts. We value people who are proactive, open-minded, and ready to grow. If you’re passionate about building meaningful products and want to join a team that feels like family - you’ll feel right at home with us.

Our client transform back-of-house tech for the hospitality industry, replacing outdated processes with AI-driven solutions. This helps top hotel brands focus on delivering exceptional guest experiences while ensuring efficient operations.

Key Requirements:

🔹 6+ years of full stack engineering experience;
🔹 Advanced proficiency in Node.js (5+ years) and at least 1 year of commercial experience with .NET (C#);
🔹 Advanced proficiency in React and TypeScript;
🔹 Proficiency in leveraging AI tools to enhance engineering productivity, with specific hands-on experience using Claude Code;

🔹Experience working with high-scale and distributed systems;
🔹 Hands-on experience with SQL Server, PostgreSQL, MongoDB, or Redis;
🔹 Familiarity with frameworks like Express, NestJS, or ASP.NET Core;
🔹 Solid understanding of system architecture, automated testing, and security best practices;
🔹 Experience with Docker, CI/CD pipelines, and cloud platforms (AWS, GCP, or Azure);
🔹 Excellent communication and problem-solving skills; comfortable working in cross-functional teams;
🔹 Willingness to work in a role split approximately 60% backend and 40% frontend, with around 70% focused on new feature development and 30% on maintenance/bug fixes, including participation in on-call duties after the onboarding period.
🔹 English - Upper-Intermediate or higher.

Will be plus:

🔹 Experience with microservices architecture, GraphQL, or serverless functions;
🔹 Exposure to mobile development (especially React Native) or AI -based features;
🔹 Familiarity with DevOps practices and infrastructure-as-code (e.g., Terraform, Pulumi);
🔹 Domain experience in hospitality, logistics, or supply chain tech;

What you will do:

🔹 Design, develop, and ship end-to-end features using React, Node.js, TypeScript, and .NET (C#);
🔹 Build and optimize scalable APIs and backend services using SQL and NoSQL databases;
🔹 Own technical decisions around performance, security, maintainability, and code quality;
🔹 Collaborate closely with product managers, designers, and other engineers to deliver impactful features;
🔹 Participate in and lead code reviews, design discussions, and DevOps improvements;
🔹 Mentor junior developers and help evolve our engineering best practices;

Interview stages:
🔹 HR interview;
🔹 Interview with VP R&D;
🔹 Semi Live-coding interview;
🔹 Tech interview - code review;
🔹 References;
🔹 Offer.

Why Join Us?

At YozmaTech, we’re self-starters who grow together. Every day, we tackle real challenges for real products - and have fun doing it. We work globally, think entrepreneurially, and support each other like family. We invest in your growth and care about your voice. With us, you’ll always know what you’re working on and why it matters.

From day one, you’ll get:

🔹 Direct access to clients and meaningful products;
🔹 Flexibility to work remotely or from our offices;
🔹 A-team colleagues and a zero-bureaucracy culture;
🔹 Opportunities to grow, lead, and make your mark.

After you apply

We’ll keep it respectful, clear, and personal from start to offer. You’ll always know what project you’re joining - and how you can grow with us.

Everyone’s welcome

Diversity makes us better. We create a space where you can thrive as you are.

Ready to build something meaningful?

Let’s talk. Your next big adventure might just start here.