Jobs Backend

About the Role

We’re looking for a backend-focused software engineer who treats quality as part of engineering, not as a separate function.

This is not a QA-only or SDET role. You will write production backend code, design APIs, and take ownership of testing, reliability, and correctness across the systems you build.

Our platform is data-heavy and API-driven, so correctness, observability, and thoughtful testing matter as much as feature delivery.

What You’ll Do

• Build and maintain backend services and APIs
• Design and implement meaningful tests (unit, integration, contract)
• Validate data integrity and API contracts before production
• Integrate tests into CI/CD pipelines
• Monitor production behavior and test outcomes
• Collaborate with engineers, product, and data teams to ship reliable systems
• Use AI tools responsibly to accelerate work (not replace understanding)

What We’re Looking For

• Strong backend engineering experience
• Comfortable owning both code and tests
• Solid understanding of REST APIs and data flows
• Experience with CI/CD and cloud environments
• Ability to reason about failure modes, edge cases, and trade-offs
• Clear communicator who can explain technical decisions

Job Description

Primary Backend Skills:

• Framework: Deep expertise in the .NET 8 Framework, specifically for building Web APIs.
• API Development: Solid experience creating and managing endpoints using GraphQL for .NET.
• Data Access: Proficiency with Entity Framework for ORM.
• Testing: Skills in writing unit tests for backend services using XUnit.
• API Documentation: Experience using Swashbuckle to generate and maintain Swagger documentation.

Cloud & DevOps Experience:

• Platform: In-depth knowledge of the Azure platform is required.
• Containerization: Experience with Docker for creating and managing containerized applications. 
• Hands-on experience deploying microservices to Azure Container Apps.
• Understanding of hosting frontend applications on Azure Static Web App.
• Experience managing and interacting with Azure SQL Database.
• Experience with NoSQL databases, specifically Cosmos DB.
• Core Azure Services: Managing customer identity with Azure AD B2C, Using Application Insights for service monitoring, Experience with Azure API Management.

Preferred, Not Required Skills

• Familiarity with our modern frontend stack is a strong plus. This includes: Core Technologies: React, Typescript, and Material UI. State Management & Data: Redux toolkit and Apollo Client for GraphQL.
• Tooling: Experience with Vite as a build tool, Vitest for testing, and Zod for schema validation.
• Navigation: Understanding of React Router.
• Version Control: Proficiency with Git and GitHub.
• Collaboration: Experience working with Jira and Confluence.
• API Testing: Hands-on experience with Postman, particularly within a team workspace.
• Development Environment: Experience with development tools like Eslint, Prettify (Prettier), and Husky is beneficial. While the choice of IDE is flexible, experience with
• Visual Studio Code is preferred.

Job Responsibilities

Working in Scrum team and perform function of senior software developer doing software modules architecture, design, development, unit and integration testing and deployment.

Department/Project Description

Developting a cloud-based platform designed for managing latest generation of IoT devices.

The core part of the system provides a centralized location for remotely monitoring, upgrading, and configuring devices. It also offers an application marketplace, allowing users to deploy and customize applications for their devices.

At the moment it is extensively extending with services that deal with telemetry provided by the connected devices and services. These services are designed in two forms. First is the predefined set of data connectors and visualisation widgets, and the second is a framework that let customers to design own connectors and widgets.

Skill Category

.NET

Keyskills - Must Have

• .NET
• Azure
• GraphQL
• Entity Framework
• xUnit
• MS SQL Server

Insiders is a fast-growing IT company which employs about 200 people. Our company focused on providing innovative digital services and cutting-edge technologies to solve complex business challenges.

What we expect from the candidate:

• Experience in development using the Python programming language is required.
• Knowledge of frameworks such as Django and DRF is necessary.
• Understanding of the fundamental principles of object-oriented programming is essential.
• Proficiency in working with databases such as MySQL and PostgreSQL is important.
• Experience with version control systems like Git is mandatory.
• The candidate must demonstrate seriousness and the ability to collaborate effectively both in a team and independently.

What we offer:

• free study in our Corporate English Academy
• growth and development opportunities for young developers even if you have no commercial experience
• regular salary review (after the completion of each contract)
• provision of Apple equipment
• comfortable office with all amenities not far from the center (uninterrupted internet, generator, tea and coffee, pastries).
• timely payment of salaries.
• corporate events, teambuildings, etc.

• working on projects side by side with Senior developers, which will give you the opportunity to learn and develop.

   

  Feel free to contact us now; this could be the beginning of our collaboration! We will respond promptly upon receiving your resume.

• Project Description:

  Our team is responsible for the development, integration, and support of corporate information systems designed to help business processes run with maximum efficiency.
  
  We develop a set of software products used by 15k+ Luxoft employees. Our solutions automate a wide range of business processes, including client relationship management, contract workflows, purchasing, business travel, budget planning, invoicing, recruitment, personnel administration, and time and resource management.
  
  We are looking for an experienced Software Developer with deep knowledge of architectural approaches to software design and implementation.

   

• Responsibilities:

  Be part of an agile development team
  Participate in microservices architecture implementation
  Participate in architecture and system design reviews
  Understand the concepts of Clean Architecture and DDD
  Be able to conduct code reviews
  Have experience with the .NET 9 tech stack
  Be able to write maintainable code

   

• Mandatory Skills Description:

  - .NET 9
  - DDD
  - Clean Architecture
  - Angular 19
  - MS SQL

   

• Nice-to-Have Skills Description:

  - Advanced English
  - Azure Kubernetes Services
  - Azure DevOps (CI-CD, Docker, HELM)
  - Enterprise Architecture
  - EF Core
  - Microservices architecture
  - Elastic
  - Redis

Job Description

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

You will:

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

Requirements

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

Nice to have

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

About the Team

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

About Wix

Wix makes it possible for anyone to succeed online.

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

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

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

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

Job Description

As a Server Engineer, you’ll be responsible for designing, developing, and maintaining scalable server-side solutions, ensuring high system availability and performance. You’ll collaborate with cross-functional teams, advocate for best practices, and contribute to the evolution of our tech stack. In your day-to-day, you will:

• Work on scalable solutions using event-driven and hexagonal architectures with a Domain-Driven Design (DDD) approach
• Lead the entire lifecycle of feature development, from defining requirements and APIs to coding, monitoring performance, and delivering robust solutions
• Ensure production stability, high system availability, and responsiveness while addressing user complaints
• Advocate for chosen architectures, contributing to the evolution of the tech stack
• Optimize system performance, reliability, and stability to meet company standards
• Participate in technical discussions to improve architecture and developer experience
   

Requirements

• 3+ years of experience as a server engineer, focusing on JVM stack and/or TypeScript
• Proficiency with SQL/NoSQL solutions, database architectures, and query profiling
• Experience in designing server solutions, API design, and technical documentation
• Skilled in writing unit and integration tests with an understanding of TDD concepts
• Familiarity with proto-based APIs, Kafka or similar messaging systems, and cloud solutions
• Knowledge of high-load systems, microservice orchestration tools, and architectures (e.g., Docker, Kubernetes, Nginx)
• Strong debugging, refactoring, and reverse engineering skills
• Passion for product development and ownership of the full development lifecycle
• Experience with functional languages like Scala or Kotlin — an advantage
   

About the Team

We’re part of the eCommerce platform group, focused on creating a robust, reliable, and scalable platform for internal and external clients. Our mission is to provide APIs, SPIs, and tools to handle, extend, and customize multiple business workflows, ensuring they meet developers’ standards and industry best practices. We aim to empower individual entrepreneurs, Wix verticals, and large agencies to run any eCommerce business seamlessly.
 

About Wix

Wix makes it possible for anyone to succeed online.

Since 2006, we’ve grown to around 5,300 employees in 22 countries, launched over 40 products, and serve over 282 million users and their visitors worldwide.

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

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

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

We are a U.S.-based fintech startup operating in the investment and financial services space. Our distributed teams work across Poland, the United States, and Ireland, collaborating on technology-driven solutions related to stocks and investments.

Security, compliance, and the responsible handling of sensitive financial data are central to how we operate, as we build scalable products in a regulated environment.

Responsibilities

- Develop high-quality Java microservices using Spring Boot.
- Build Kafka producers, consumers, and stream-processing apps.
- Design event-driven architectures with reliability and performance.
- Implement service resiliency patterns such as retries and circuit breakers. - Collaborate on distributed system design and integration.

• Ensure logging, tracing, and monitoring of backend services.

• Support performance tuning and root cause analysis.

   

• Skills
  - Strong in Java, Spring Boot, microservices patterns.
  - Hands-on Kafka development—streams, partitions, consumer groups. - Knowledge of distributed systems architecture.
  - Familiarity with Docker, cloud-native packaging.
  - Experience in REST APIs, schema evolution, and contracts.
  - Understanding of observability (logs, metrics, traces).
  - Good debugging and performance optimization skills.

We don't need coders, we need Golang backend engineers who build features end-to-end using Claude Code.

Details:
• AI coding experience (mandatory!): experience with Claude Code - #1 priority, or other agentic coding tools. Claude Code is what is used on the project
• Senior Golang Developer, 5+ years of experience, can potentially consider really strong candidates with 4 years of experience
 • Strong proficiency in English (Upper-intermediate level or Advanced)
 •
 • Full-time
 • Fully remote
 • Start: ASAP!
 • Duration: long-term

Sharing more details about the responsibilities and requirements below.

What you'll actually do:
 • Own features end-to-end: from specs to deployment to fixing bugs
 • Use Claude Code to generate Golang backend code
 • Review AI output for quality and architectural fit
 • Fix bugs to learn our codebase, then rapidly build new features
 • Make quick decisions on what to build vs buy vs generate with AI
 • Talk to customers when they report issues and ship fixes same day

Our stack:
 • Backend: Golang monorepo
 • AI: Claude Code (mandatory), other agentic coding tools

Products you will build:
 • API: platform features, tooling, multi-agent system, etc.

You must have:
 • Ownership mentality with a strive for elegantly simple, high-quality solutions
 • Strive for max quality - you test your own work thoroughly since we have no QA team, everything you ship MUST work
 • Product mindset - you care about WHY we're building something
 • Proven experience using Claude Code or similar agentic AI (Cursor, Windsurf)
 • Strong Golang experience - you'll review AI's code in these, and you must understand how it works
 • Broad architectural knowledge of building backened

 

We are seeking a highly skilled Middle Power BI Engineer to join our team and contribute to the development of core system services and automation workflows. The role involves building reliable, secure, and efficient solutions that support large-scale infrastructure processes.

This position is client-facing and requires strong communication skills and the ability to translate business requirements into clear technical solutions.

Responsibilities:

• Develop and improve Power BI dashboards for package compliance status
• Replace placeholder measures with accurate DAX-based compliance logic
• Improve data modeling and reporting structure from raw flat tables
• Support backend data cleanup and ETL improvements
• Collaborate with PM and engineering stakeholders on metrics and priorities

Requirements :

• Experience with C# and .NET.
• Power BI and DAX expertise
• Experience with enterprise reporting and data modeling
• Bi Analytical background
• Familiarity with Azure analytics stack
• Excellent communication skills with the ability to work directly with stakeholders.
• Strong self-organization, reliability, and attention to detail.

• Ability to work independently and proactively resolve issues.

   

  Working conditions and benefits:

• Paid vacation, sick leave.
• Official state holidays — 11 days considered public holidays.
• Professional growth while attending challenging projects and the possibility to switch your role, master new technologies and skills with company support.
• Flexible working schedule: 8 hours per day, 40 hours per week.
• Personal Career Development Plan (CDP).

• Paid external training, conferences, and professional certification that meets the company’s business goals.

   

Required skills:

👉At least 5 years experience with Shopify

👉 At least  upper-Intermediate English level

⚡️ experience with Shopify Plus will be a HUGE plus.

Key Responsibilities:

👉 Developing new features and websites

👉 Supporting existing solutions

👉 Migrating from various e-commerce platforms

👉 Debugging and bug fixes for operating businesses

👉 Take part in the development of our own tools and frameworks

👉 Project deployment and basic testing

We offer:

✅ Become a part of rapidly growing Ecommerce Agency

✅ NO russian clients, NO russian colleagues!

✅ Remote work

✅ Paid time-off

✅ Flexible schedule

✅ Ability for a constant financial and professional growth

They build one of the most trusted AI order-taking systems for drive-thrus, designed specifically for high-volume QSR environments and built to scale. Their AI consistently delivers over 93% order completion and 96% accuracy, enabling faster, error-free service across thousands of locations.

Their platform gives brands full control over scripts, upsells, and voice, while allowing franchisees to easily adapt menus, limited-time offers, and regional variations. Built-in labor optimization reduces employee stress and turnover, saves hours of labor every day, and significantly improves the guest experience.

They are growing rapidly and operate the largest number of voice-AI drive-thru deployments in the market, competing directly with both big tech and restaurant technology leaders.

They are now looking for a Staff Engineer to join their Infrastructure team and help shape the backbone of a highly complex, real-time system at scale.

About the Role:

As a Staff Engineer, you will operate at a high level of ownership and impact, working on systems that are already live in production and used at massive scale.

You will:

• Own and evolve critical parts of the core backend infrastructure -a real-time, distributed system written in Python and Rust
• Lead large technical initiatives end-to-end with minimal guidance
• Troubleshoot and resolve high-severity, complex production issues
• Continuously improve development velocity while maintaining exceptionally high reliability standards

Why You Should Apply

This role is ideal for engineers who want real technical ownership, not just influence on paper.

By joining them, you will:

• Work on mission-critical, real-time systems deployed at massive scale
• Tackle hard infrastructure problems involving networking, performance, concurrency, and reliability
• Have genuine autonomy to design, build, and ship impactful solutions
• Compete technically with top-tier big tech systems while retaining startup-level speed
• Influence architecture decisions that directly affect thousands of real-world locations
• Be part of a team that values deep technical excellence, resilience, and ownership

If you’re looking for a role where your experience truly matters - and where the problems are genuinely difficult - this is it.

Qualifications

• BSc in Software Development or equivalent industry experience
• Previous experience as a Staff or Principal Engineer in a startup environment
• 10+ years of Python development experience
• Strong experience with Python Asyncio
• Excellent software design and architecture skills
• Strong written and verbal communication skills
• Significant experience with at least one strongly typed language (Rust, C++, Go, Swift, Java, etc.)
• Deep understanding of networking protocols and operating systems
• Deep expertise in Python profiling and performance optimization
• Proven experience delivering and troubleshooting production-grade, cloud-based distributed systems
• Experience building and debugging real-time, low-level systems (e.g., kernel, drivers, RTOS)
• Hands-on experience with Kubernetes and Helm
• Experience working with multiple observability stacks
• Strong LLM prompting skills, while also being effective without them
• Experience with gRPC and gRPC troubleshooting
• Contributor or maintainer of an open-source project

Bonus Experience

• Knowledge of WebRTC, STUN/TURN, SIP, RTP, HLS, or RTMP
• Experience with Rust and PyO3
• Audio or voice-related programming experience

Qualities They’re Looking For

• Fast - you aim to be a true 10x engineer, not just another senior profile
• Resilient - comfortable balancing planned work with urgent, real-time issues
• Clear communicator - able to write concise documentation and explain complex ideas
• Strong problem solver with a systems-level mindset
• Extreme ownership and independence
• Ability to turn incomplete or ambiguous requirements into real products
• A collaborative team player who raises the technical bar around them
  
  If you’re passionate about AI, real-time systems, and backend development at scale, we’d love to hear from you!

Job Description

• Proven strong background in software development processes.
• Strong knowledge of Python, willingness to learn and develop with it.
• Experience with Microservices architecture and REST based solutions.
• Experience with Docker containers technology and Kubernetes is a must.
• Experience with database technologies, ideally DynamoDB (NoSQL).
• Experience with AWS would be a plus. 
• An analytical mind with problem solving skills, both alone and with colleagues.
• Excellent communication skills for effective daily communication.

Job Responsibilities

GlobalLogic team is starting a new partnership and is now looking for an experienced, energetic and creative Senior Engineer to join our team. This is an opportunity to play a major contributing role to the evolution of our platform, and to work closely with the senior leadership of the Technical and Product team in the evolution of this core part of the product.

Some of your responsibilities will include

• Break down high level requirements into understandable pieces of work, and provide high confidence effort estimates
• Develop API interfaces for Dashboard application, connecting ML layers data with user interfaces
• Work with ML engineers, extending existing system with a new components

Department/Project Description

The customer is world known mass media and entertainment company, owning a number of giant Amusement Parks. We will be developing a Computer Vision based system to detect, alert, and record any discrepancy between the number of people detected by an overhead camera and the number of occupied seats from the seat sensor indicator lights in the Attraction and alert the operator in real time via the video security management system.

This project focuses on developing a web app that makes contract creation fast and effortless, with ongoing improvements driven by user feedback.

In parallel, they are building a custom workforce planning and scheduling tool from the ground up to support more complex operational needs.

Requirements:
• 5 years of relevant experience
• Experience with Java 17+ and Spring (Boot, Security, Core, JPA)
• Clean architecture, distributed system design and microservices architecture
• Microservices design patterns, design patterns in Java
• Distributed systems
• Hibernate or other ORM experience
• Knowledge of Docker or other containerization tools
• Familiarity with AWS (SQS, Lambda, Cloudwatch)
• Experience with Relational databases (preferably PostgreSQL, but any would suffice) and
NoSQL (DynamoDB)
• Implementation of REST APIs
• Oauth2
• At least Upper-Intermediate English level

In return, we offer:

• The friendliest community of like-minded IT people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program is designed to meet our team’s needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort, and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups

Description

We seek a highly skilled and adaptable Sustaining Engineer to join our team. In this role, you will ensure the stability and performance of our microservices-based systems, primarily built on .NET. The ideal candidate is a problem-solver who can jump into different roles — from support and QA to development — and is comfortable working in a dynamic environment, including rotating shifts.

Requirements

* Experience with .NET and microservices architecture.
* Proficiency in debugging and testing complex systems.
* Familiarity with tools such as Kibana, Grafana, or other logging/monitoring solutions.
* Experience with cloud platforms (Azure, GCP) and containerization (Docker, Kubernetes) is a plus.
* Excellent troubleshooting skills with the ability to identify, analyze, and resolve complex issues efficiently.
* Ability to switch between roles (support, QA, developer) and work independently in different environments.
* Strong communication skills and ability to work effectively with cross-functional teams.
* Willingness to work various shifts, including weekends and holidays, to support a global team.

Job responsibilities

* Investigate and debug complex issues within our microservices architecture, pinpoint the root cause, and provide solutions.
* Conduct in-depth testing, including edge cases, to ensure the reliability of the systems and resolve any discovered issues.
* Collaborate with development teams to propose solutions and, if necessary, implement fixes to resolve issues.
* Work across various roles, including technical support, quality assurance (QA), and development, depending on the task or project.
* Monitor, triage, and resolve incidents promptly, ensuring minimal service disruption.
* Use performance monitoring tools to identify and fix issues before they impact end users proactively.
* Create and maintain technical documentation for troubleshooting processes, root cause analysis, and solutions.
* Work flexible hours, including different shifts.

We partner with startups and enterprises to build products across healthcare, fintech, eCommerce, and AI. For you, this means variety - different projects, fresh challenges, and growth that doesn't stall. No years maintaining one legacy codebase.
 

If you want to grow quickly and work on things that actually ship - keep reading.
 

What You'll Do

• Build and ship features - from small tasks to full modules as you grow
• Write clean code and learn best practices through code reviews
• Work alongside experienced engineers who'll help you level up
• Learn how production apps are built and scaled
• See different products and industries - faster learning curve

What We Work With

⚡ Python, FastAPI, Django, Pydantic, PostgreSQL, uv, Ruff, React, TypeScript, Next.js, Tailwind

Gets You Extra Points

• Familiar with SQLModel, Alembic
• Used AI coding tools (Cursor, Claude Code, Copilot)
• Hands-on experience with any LLM integration
• Basic prompt engineering skills

What You Bring

• Solid understanding of Python and basic React/TypeScript
• Understanding of REST APIs
• Basic experience with SQL databases
• English: Intermediate+
• Willingness to learn and take feedback
   

What You Get

Work & Growth:

• Fully remote, flexible hours
• Structured code reviews
• Senior engineers who help you level up
• English practice sessions

Compensation:

• Salary in USD
• Performance reviews twice a year
• 15 days paid vacation + sick leave