Jobs Backend

Come Back Agency supports US software and technology companies by running their hiring process. We work with delivery and leadership teams to define roles, screen candidates, and manage interviews. Successful candidates are hired directly by the company and become part of its team.

This position is with a US-based software company providing custom development and AI implementation for North American clients. The team builds and maintains production software, including AI-enabled systems, and works in long-term client engagements.

Team members operate as part of an internal, distributed team and collaborate directly with client stakeholders.

What we’re looking for:

• Proven experience as a WordPress Developer, with a portfolio of previous projects.
• Proficiency in WordPress theme and plugin development.
• Strong knowledge of PHP, HTML, CSS, and JavaScript.
• Familiarity with responsive design principles.
• Experience working with MySQL or other relational databases.
• Understanding of web standards and optimization techniques.
• Good English communication skills (B1+ level).
• Ability to work collaboratively in a team environment.
• Excellent problem-solving and debugging skills.

• Strong attention to detail and the ability to meet project deadlines.

   

What you’ll be doing:

• Collaborate with design and development teams to create and maintain WordPress websites and applications.
• Customize WordPress themes and plugins to meet client requirements.
• Develop custom functionalities and features using PHP, HTML, CSS, and JavaScript.
• Ensure the security, performance, and scalability of WordPress sites.
• Troubleshoot and debug WordPress-related issues.
• Stay up to date with the latest industry trends and best practices in WordPress development.
   

What We Offer:

• Working hours aligned with US time zones, typically 16:00–00:00 Kyiv time.
• English lessons to support clear and confident communication.
• Paid vacation and sick days.
• Fully remote work.
• Opportunities for professional growth within the team.
• Structured, personalized onboarding to help you ramp up effectively.
   

Apply with your resume and a short note outlining your relevant experience. You can also submit it through our website at comeback.ua. Selected candidates will be contacted by Come Back Agency.

Responsibilities

• Build and maintain backend services and APIs using .NET 8+ and C#.
• Design and manage PostgreSQL databases, ensuring data integrity and performance.
• Implement Entity Framework Core for data access and business logic.
• Integrate backend systems with AWS services (EC2, Lambda, RDS, S3, etc.).
• Ensure backend systems are secure, scalable, and maintainable.
• Write clean, testable, and efficient code with proper documentation.
• Troubleshoot, debug, and optimize backend services.
• Collaborate with frontend developers and product team to define APIs.

Requirements

• 2+ years of professional experience with .NET (C#).
• Strong knowledge of Entity Framework Core and RESTful API development.
• Experience with relational databases, ideally PostgreSQL.
• Familiarity with cloud technologies, especially AWS basics (EC2, Lambda, RDS, S3).
• Understanding of authentication & authorization, including OAuth2.
• Problem-solving mindset and attention to detail.
• Ability to work in a remote team environment with good communication in English.

Nice-to-Have

• Experience with Docker and containerized deployments.
• Basic understanding of CI/CD pipelines

🚀 Senior PHP / Laravel Developer — Fourmeta

About the role:

Fourmeta is looking for an experienced Senior PHP / Laravel Developer to join our team and work on scalable, secure, and high-performance web applications for international clients.

You will be involved in both development and architectural decisions, collaborating closely with other developers, designers, and project managers to deliver reliable and efficient solutions.

🧩 Responsibilities

• Develop and maintain web applications using PHP and the Laravel framework
• Participate in application architecture design and technical decisions
• Optimize code for performance, scalability, and security
• Perform software testing and debugging
• Collaborate with developers, designers, and project managers
• Participate in code reviews and team meetings
• Contribute to improving development processes and code quality

🧠 Requirements

• 5+ years of experience with PHP
• Strong knowledge of the Laravel framework
• Experience with databases (MySQL, PostgreSQL) and query optimization
• Proficiency with Git and modern version control workflows
• Ability to quickly understand and work with existing codebases
• Solid understanding of OOP principles and design patterns
• Experience working with RESTful APIs
• Team player with strong communication skills and willingness to learn

🌟 Nice to Have

• Experience with Docker and application containerization
• Experience writing unit and integration tests
• Understanding and usage of CI/CD pipelines
• English level sufficient for reading and writing technical documentation

🎁 What we offer

• 18 days of paid vacation
• 6 paid sick days per year
• Compensation for sports and fitness activities
• Flexible remote work format
• International projects and professional growth
• Friendly and transparent team culture
• Opportunity to work with modern technologies and complex products

Language requirements
English — B2 (Upper-Intermediate) or higher

About Fourmeta
Fourmeta is a web-studio based in London, UK.
For many years, we have been creating and improving digital products for companies worldwide: websites, landing pages, mobile apps, web apps, e-commerce platforms, and interactive solutions.

We are your full-stack design and development team. You have the idea — we’ll make it happen.

At RemSoft.Dev, we’re passionate about tackling exciting enterprise projects. We’re expanding our team and looking for an experienced Senior .NET Developer to work with cutting-edge technologies like .NET Core, .NET 5, and beyond.

What We Offer:

1. Remote-first work environment: Work where you feel most productive and comfortable.
2. Competitive compensation: Monthly payments aligned with your skills and career growth potential.
3. Exciting tech stack: Projects using .NET Core, Blazor, F#, TypeScript, Angular, React, Azure, and other leading-edge tools.
4. Supportive team environment: Collaborate with a friendly and knowledgeable team ready to assist you.

What We’re Looking For:
We’re seeking a skilled professional with the following qualifications:

1. Experience:
   • 7+ years of proven expertise in .NET/C# development.
   • Solid experience in Azure/AWS (DevOps) is mandatory.
2. Frontend Development (5+ years):
   • Experience with one or more frontend frameworks such as Blazor (preferred), React, Angular, or Vue.js.
3. Backend Proficiency:
   • Familiarity with Minimal API, MVC, MAUI, or Desktop applications (e.g., WPF, WinForms, WinUI).
4. Database Experience (5+ years)
   • Strong hands-on experience with MS SQL, PostgreSQL, and MongoDB.
5. DevOps Expertise(5+ years):
   • Hands-on experience with Azure DevOps tools, CI/CD pipelines, and containerization (Docker).
   • Proficiency in PowerShell/Bash scripting.
6. Security Skills:
   • Expertise in OAuth2 implementation and integration with various providers.
7. Collaboration:
   • A critical thinker with a proactive approach to problem-solving.
   • Strong knowledge of Git/GitHub.
8. Language:
   • English proficiency (B2+) to work effectively in an international team.

If you’re excited about challenging projects, value professional growth, and are ready to step into a leadership role, we’d love to hear from you!

Akurateco is a cutting-edge white-label payment software provider with 15+ years of hands-on experience in the payment industry, bringing fully-brandable and easily customizable payment software to our customers.

We are looking for a Middle Backend Developer (PHP) to join our team.

Requirements:

• Minimum 2-3 years of commercial software development experience.
• Proven working experience with PHP 7.4+ (8.x is a strong plus).
• Practical experience with the Symfony framework.
• Deep understanding of core software development principles (OOP, Design Patterns, SOLID).
• Experience designing and working with RESTful APIs.
• Ability to write clean, well-structured, and maintainable code.
• Intermediate (B1-B2) level of English.

Nice to have:

• Experience integrating with external Payment Service Providers (PSPs).
• Familiarity with code quality tools (PHPMD, PHPCPD).
• Experience with Docker and CI/CD pipelines.

Responsibilities:

• Develop and maintain specific functional modules and services.
• Develop and implement integrations with external payment systems and third-party services.
• Write clean, efficient, and maintainable code, including unit tests.
• Actively participate in technical discussions, sprint planning, and team decision-making processes.
• Participate in refactoring and optimization of the existing codebase to improve performance and reliability.

We offer:

• Competitive compensation depending on experience and skills.
• Remote-first work environment with flexible working hours.
• 20 paid vacation days annually for rest and recharge.
• 20 days of sick leave, available as needed.
• Corporate English classes.
• Professional development support.

Must-Have Requirements

• Experience: 3+ years of commercial development experience, specifically as a Middle Python Developer or AI/ML Engineer
• Technical Skills:
  • strong core skills, idiomatic code, synchronous and asynchronous programming (Python 3.x)
  • hands-on backend development experience (Django, FastAPI), REST, Auth
  • databases (Relational, NoSQL, ORMs)
  • testing (pytest/unittest, TDD/BDD practices)
  • cloud platforms (AWS, Azure or GCP)
  • LLM ecosystems & APIs, RAG, ML Libraries (PyTorch and/or TensorFlow, NumPy, Pandas, etc)
• Soft Skills: English (B2+)
   

Nice-to-Have Requirements

• Hands-on experience with at least one major cloud provider (AWS — Bedrock, Azure — AI Foundry/AI Search, GCP — Vertex AI)
• Agentic & orchestration frameworks
• Frontend development (JS/TS, React, etc)
• DevOps/MLOps, Containerization & Orchestration

We are an innovative tech company focused on building cutting-edge AI solutions and scalable web applications. 
We are seeking a highly skilled Senior Python Developer with experience in FastAPI and AI/ML development. 

Responsibilities:

• Develop and maintain robust backend systems using Python 
• Implement AI/ML models into production systems.
• Collaborate with data scientists and frontend developers to integrate AI solutions.
• Ensure code quality, testing, and best practices for maintainable and scalable applications.
• Optimize applications for performance and scalability.

• Stay up-to-date with emerging AI and backend technologies.

   

Qualifications:

• Strong experience in Python development (5+ years preferred).
• Hands-on experience with FastAPI (or other framework)
• Solid understanding of AI/ML concepts and experience integrating models into applications.
• Experience with RESTful APIs, asynchronous programming, and database management (SQL/NoSQL).
• Familiarity with cloud services (AWS, GCP, Azure) is a plus.
• Strong problem-solving skills and ability to work in a collaborative team environment.

Nice-to-Have:

• Experience with Docker, Kubernetes, and CI/CD pipelines.
• Knowledge of NLP, computer vision, or other AI domains.
• Open-source contributions or active participation in developer communities.

What We Offer:

• Competitive salary and performance bonuses.
• Flexible working hours and remote options.
• Opportunities to work on cutting-edge AI technologies.
• Collaborative and supportive team culture.
• Professional development and learning opportunities.

Our mission at Geniusee is to help businesses thrive through tech partnership and strengthen the engineering community by sharing knowledge and creating opportunities🌿
We care about Trust, Partnership, Transparency, and Responsibility. We offer a safe, inclusive and productive environment for all team members, and we’re always open to feedback💜 If you want to work from home or work in the offices in Kyiv, Lviv or Warsaw with stable electricity and Wi-Fi , great — apply right now

Requirements:
● 5+ years of experience in Python development;
● Architectural Mindset: Proven experience building and scaling large-scale distributed systems;
● Deep knowledge of asynchronous APIs (FastAPI is a priority, Gevent) and microservices architecture;
● Proficiency with MongoDB, Redis, and Elasticsearch;
● Experience writing high-quality, well-tested code (unit, integration, e2e);
● Hands-on experience using AI tools (GitHub Copilot, Cursor, ChatGPT/Claude) to speed up development, especially for frontend tasks and boilerplate;
● Strong knowledge of algorithms and data structures;
● English: Upper-Intermediate or higher (ability to discuss technical trade-offs fluently).

Would be a plus:
● Experience with React (or a strong willingness to own the frontend part using AI assistance);
● Migration Experience: Previous experience moving legacy systems (e.g., Ruby/PHP/Node) to Python;
● Cloud & DevOps: Familiarity with Docker, Kubernetes, and CI/CD pipelines (Jenkins, Spinnaker);
● AI/ML Interest: Familiarity with MLOps, NLP/NLU, or integrating LLMs into production environments.

What you will do:
● Lead the migration of core services from Ruby to Python;
● Design and implement scalable microservices;
● Build and maintain the frontend using React, leveraging AI tools to maintain high efficiency;
● Optimize database performance and search capabilities.

What will you get:
● Competitive salary and good compensation package;
● Exciting, challenging and stable startup projects with a modern stack;
● Corрorate English course;
● Ability to practice English and communication skills through permanent interaction with clients from all over the world;
● Professional study compensation, online courses and certifications;
● Career development opportunity, semi-annual and annual salary review process;
● Necessary equipment to perform work tasks;
● VIP medical insurance or sports coverage;
● Informal and friendly atmosphere;
● The ability to focus on your work: a lack of bureaucracy and micromanagement;
● Flexible working hours (start your day between 8:00 and 11:30);
● Team buildings, corporate events;
● Paid vacation (18 working days) and sick leaves;
● Cozy offices in 2 cities ( Kyiv & Lviv ) with electricity and Wi-Fi ( Generator & Starlink);
● Compensation for coworking (except for employees from Kyiv and Lviv);
● Corporate lunch + soft skills clubs;
● Unlimited work from home from anywhere in the world (remote);
● Geniusee has its own charity fund.

We are looking for Backend/Golang Developers to join our team.

You will be responsible for building and evolving a high-performance backend platform that powers real-time, user-facing applications in a scalable and reliable microservices environment.

Key Responsibilities:

• Build a cutting-edge real-time cross-selling platform;
• Take ownership of the backend that powers multiple user-facing apps, advancing our state-of-the-art gRPC-based microservice architecture;
• Actively participate in code reviews to ensure that our platform and codebase meet the highest quality standards;
• Take a proactive role in all aspects of platform design and development, with a strong emphasis on scalability and availability.

Bring to the team:

• Solid experience with gRPC, REST API, and Backend testing;
• Strong familiarity with Agile methodologies, fostering collaboration, and adaptability;
• Excellent communication and problem-solving skills;
• Experience building Go applications with a focus on resilience and uptime;
• Fluent business English.

We offer:

• Maximum flexibility;
• Professional trainings, conferences and certifications;
• Corporate events and benefits;
• Professional literature;
• English courses.

We are looking for a Shopware Developer with 5+ years of commercial development experience, 2+ years of Shopware experience, and conversational English to contribute to the development of a cloud infrastructure service for large e-commerce platforms.
 

The project:
A cloud solution that automates the management of custom workloads, applications, and APIs across private and public cloud provider environments.
The client is a leader in cloud hosting and automation, with solutions that help businesses quickly migrate storefronts to any cloud. The product is designed for high reliability, predictable scalability, and uninterrupted performance even under peak loads.
To date, more than 3,000 businesses have successfully moved to the cloud.

Stack: Magento, Shopware, Сloud (AWS, Azure), Terraform.
Team: 2 Magento/Shopware Developers and a DevOps Engineer on our side.
 

Responsibilities:
— Debugging and maintaining Shopware code
— Debugging Magento 2 code (if experienced with it)
— Interaction with related services: Redis, Varnish, RabbitMQ, MySQL, New Relic, Postman, internal panel
— Backend and infrastructure optimization
 

Requirements:
— 5+ years of commercial development experience
— 2+ years of experience with Shopware, with a focus on Shopware 6
— In-depth knowledge of Shopware 6: DAL, Business Events, Flow Builder, Store API / Admin API
— Solid understanding of Symfony: Dependency Injection, Messenger Component (queues), EventDispatcher
— Experience with frontend extensions: Twig (Storefront) and Vue.js basics
— Skills in working with AWS 
— Skills in using Docker and Unix (SSH)
— Spoken English at an Upper-Intermediate level or higher
 

Will be a plus:
– Experience with Magento and related stack: Redis, Varnish, RabbitMQ, MySQL, New Relic, Postman, internal panel

– Experience with Azure

We offer:

– Flexible schedule: you can start your day between 10:00 and 12:00
– Remote work format

– No time trackers

– Paid vacation (20 working days) and sick leave (10 working days) 
 

Interview stages:
1. Interview with a recruiter and English check (45 min)
2. Technical interview with the project developer and the company’s Head of Delivery (1 hour) 
3. Interview with the Team Lead (1.5 hours) 
4. Interview with the CTO (1 hour, possible additional stage)

The Project

Project. We create innovative audio-video and software systems for medical simulations and clinical skill’s assessment. Our solutions are used by universities, hospitals, and training centers around the world.

The platform combines high-quality video and audio recording, synchronized data collection, integrated analytics, and work with realistic medical mannequins and patient simulators. This allows medical professionals to be trained in conditions that are as close to real life as possible and improves the quality of training for future doctors.

Tech requirements:

• 5+ years of experience with C# / .NET backend development.
• Strong understanding of RESTful API design, SignalR, and WebSockets.
• Experience with RavenDB or other NoSQL databases.
• Knowledge of asynchronous programming, dependency injection, and clean
• Architecture principles.
• Solid grasp of security, authentication, and authorization in distributed systems.
• Familiarity with CI/CD pipelines and version control (Git).
• English — Upper-Intermediate (speaking and writing) and fluency Ukrainian.

Nice to Have

• Experience with AI or analytics service integration (Python microservices, data exchange, etc.).
• Knowledge of AV systems, streaming protocols, or medical device integration.
• Understanding of microservice communication and event-driven architectures.
• Technical Lead experience.

What you will do:

• Design, implement, and maintain backend services using C# and .NET.
• Develop and extend REST APIs, SignalR, and WebSocket endpoints for real-time communication.
• Manage and optimize RavenDB databases, including indexing and data modeling.
• Ensure reliable data exchange between recording servers, frontend applications, and AI pipelines.
• Implement proper logging, error handling, and performance optimization.
• Collaborate with frontend and AI teams to support feature development and integrations.
• Participate in architecture discussions and continuous improvement initiatives.

Hiring process: → Interview with Recruiter Kateryna (up to 30 min) → Technical interview (up to 90 min) → PM interview (up to 30 min) → Client interview (up to 30 min) → Offer 🥳

Why join Empeek? ✨

• Working with medical projects — developing solutions that have a real impact on the quality of education and training for medical professionals.
• Opportunities to work with AI and analytics — integrating modern technologies, deepening knowledge and practice.
• Career growth — individual development plans, mentoring, and opportunities to transition to new roles.
• Complex and meaningful products — modern architecture, cutting-edge technologies, and solutions that really make a difference.
• Strong team culture — shared mission, values, and passion for what we do.
• Flexibility and responsibility — freedom to choose your format and schedule, focus on results, and real impact on the company’s success.

What we offer

• Access to learning opportunities — internal and external training, certification reimbursement.
• 18 paid vacation days, 10 public holidays compensated, and up to 10 paid sick days.
• Up to $300/year for English classes + free speaking club.
• Up to $180/year for sports activities.
• Mentorship and knowledge sharing — people you can really learn from.
• Career maps and growth plans to support your professional development.
• New equipment provision, and accounting support if needed.
• Competitive market-level salary with regular reviews.
• Additional perks and compensations such as insurance fund, gifts etc.
• Psychological safety and supportive culture.
• Company values that align with yours.
• Social responsibility — support the Armed Forces

📌If you believe this role could be a great match for you, please send us your resume via the link — we’ll be happy to get in touch with you.

You’re also welcome to recommend colleagues or friends — we offer a referral bonus 🎁.

Requirments:

• Understanding of modern Web and Mobile technologies

• Strong JavaScript knowledge and TypeScript

• Experience with Node.js

• Knowledge of either Nest.js, Express.js, KoaJS, or Meteor.js is an asset

• Strong object-oriented programming and design skills

• Expertise in MongoDB / NoSQL databases, FireBase/FireStorage

• Experience with creating of RESTful API services

• Ability to solve problems independently

• Outstanding teamwork and communication skills

• Intermediate reading and writing skills in English

• 2+ years of experience in web and mobile applications development

• Ability to quickly learn new technologies

will be an advantage:

• Front-end knowledges (e.g. React / Angular)

• Strong knowledge of PHP (or some of frameworks, e.g. Laravel)

• Knowledge of .NET or Python

Предлагаем

• Competitive salary

• Professional and friendly team

• Convenient office location

• Comfortable workplace

Duties:

• Build a web/mobile applications back-end using Node.js and frameworks

• Projecting database structure and logic

• Projecting big data environment and server-side architecture

• Attend daily stand-ups, planning sessions, and sprint reviews

Candidates from Sumy located prefer and welcome!

About project:

Backend development for mobile and web projects

We are looking for Java developer:
 

Skills:

-Java 18+

-ideally: Quarkus
acceptable: “recent” J2EE, especially JAX-RS, CDI, Bean Validation
not sufficient (but might be advertised as an “alternative”): Spring (Boot)

-J2EE

-CDI, 

-Bean Validation

-Docker

-Kubernetes

-Postgresql

-Keycloak (OAuth 2, OICD)

-Mapstruct

-Cucumber

-OpenAPI

-JAX-RS

-JUnit 5

-Mockito

-Apache Camel

-Maven

-Hazelcast

-Flux

-Grafana

-Kibana

-React JS will be "+"

On behalf of our Client, a well-established financial institution from the Netherlands, Mobilunity is looking for a Full Stack developer for a longterm engagement.

Our Client is building a powerful new SaaS platform for premium restaurants to manage their own e-commerce, visibility, and retention - replacing tools like Shopify, Mailchimp, and Clavio with a tailored all-in-one solution.

Key Responsibilities:

• Develop clean, scalable code using Python (Django) 70% and React/Next.js 30% or vice verse
• Collaborate with tech lead and product manager to refine implementation
• Take ownership of services end-to-end: from feature spec to delivery
• Work across backend and frontend, with focus flexibility (backend-leaning or frontend-leaning is OK)

• Embrace agile delivery and AI-powered workflows for speed and quality

   

Requirements: 

• 5+ years in full-stack development
• Fluency in Python/Django, JavaScript/React, Next.js leaning to backend or frontend is OK
• Comfortable with PostgreSQL, REST APIs, GCP
• Proactive communication and ownership mindset

• Interest in customer experience, not just specs

   

Nice to Have:

• Experience in product-led SaaS environments
• Exposure to foodtech, marketplaces, or e-commerce products
• Use of AI-enhanced dev tools (Cursor, Copilot, Claude Code)

Tech Stack:

• Backend: Python, Django, FastAPI.
• Frontend: React, Next.js.
• DB: PostgreSQL.
• Cloud: GCP.
• Process: Agile, AI-enhanced workflows.
• Tools: Cursor/Claude Code, Slack, Figma.

We are looking for a Middle Node.js Developer with 3+ years of programming background to join a mature SaaS ad-tech platform and work on a data-intensive, high-load system used by hundreds of global clients.

JOB REQUIREMENTS

Must have:

• 3+ years of commercial experience in backend development
• Strong hands-on experience with Node.js and TypeScript
• Solid knowledge of AWS services (S3, Lambda, SQS, CloudWatch, API Gateway, CloudFormation, CDK, AWS SDK)
• Experience with serverless architectures
• Strong experience with MongoDB
• Upper-Intermediate English (direct communication with the client)

Nice to have:

• Experience with SQL and analytical databases (Snowflake, AWS Athena)
• Experience working with high-load systems
• Experience with GCP, especially BigQuery

PROJECT

Customer:
Global UK startup

Type:
SaaS, ad-tech, e-commerce 

Product:
The product is a SaaS platform that helps brands optimize sales and advertising across major marketplaces such as Amazon, Shopify, and Walmart etc. It processes huge volumes of data daily and uses ML and analytics to automate advertising decisions, optimize budgets, and provide actionable business insights to customers.

Market:
Global 

Stage:
Growing and mature product

Project team:
3 Full-stack developers, 1 QA/Lead
All developers work in close collaboration with the client

Technical stack: Node.js, TypeScript, AWS (S3, Lambda, SQS, CloudWatch, API Gateway, CloudFormation, CDK, SDK), Serverless, MongoDB, Snowflake, AWS Athena, BigQuery

Work schedule:
Full-time working day, the full remote is available

Key achievements:

• High-load system processing large volumes of data daily
• Around 500 enterprise clients (Fortune 500-level companies)
• Product uses ML / AI components for analytics and automation
• Long-term cooperation between TechMagic and the client (5+ years)

Interview stages

1. Call with the recruiter
2. Technical interview 
3. Client interview 

Our Benefits

• Projects with modern JS stack (React.js, Angular, Node.js)
• Strong JavaScript community at the company (90+ developers)
• Work from anywhere (fully remotely or in our office)
• Paid vacations and sick-leaves, additional days-off
• Wellness: medical insurance / sport compensation / health check-up
• Education: tech talks, educational courses, paid certifications, English classes
• Fun: team activities, branded gifts
• One of the best IT employers in Lviv / Ukraine based on DOU rating