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Luxoft is an IT consulting and software engineering services firm that provides bespoke technology solutions to external clients, often operating as a staff augmentation or professional services provider.

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Posted 3d ago

Middle Backend Developer (Node.js)

@ Luxoft
View All Jobs
Ukraine
RemoteFull Time
Responsibilities:designing services, building apis, deploying containers
Requirements Summary:4+ years backend development experience with Node.js, REST API design, cloud-native development on AWS/Azure, Kubernetes, CI/CD, and strong communication skills.
Technical Tools Mentioned:Node.js, Express, Fastify, NestJS, JavaScript, TypeScript, OAuth2, JWT, RabbitMQ, Kafka, SQS, AWS, EC2, S3, Lambda, SNS, IAM, CloudWatch, Azure, App Service, Azure Functions, Azure DevOps, AKS, Docker, Kubernetes, K8s, EKS, GitLab CI, GitHub Actions, Jenkins, Terraform, Helm, PostgreSQL, MySQL, MongoDB, DynamoDB, Redis, Prometheus, Grafana, ELK stack, Jaeger, OpenTelemetry, Jest, Mocha, Supertest
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Job Description

Project description

As a Backend Developer for this project, you will have the opportunity to contribute to industry leading software for our global clients. You will work closely with cross-functional teams and regional experts to design, implement, and support solutions. This is your chance to work on a stable, long-term project with a global client, focusing on digital transformation and change management.

We are looking for a Mid-Level Backend Developer with solid expertise in Node.js, RESTful API design, and cloud-native development. The ideal candidate will have hands-on experience building scalable, secure, and high-performance backend services deployed on AWS and Azure using Kubernetes. You will work closely with cross-functional teams to design, build, and maintain backend systems that power our applications.

Why Join Us?
- Exciting Opportunities: Work in squads under our customer's direction, utilizing Agile methodologies and Scrum.
- Innovative Application: Contribute to an application that guides and documents the sales order process, aids in market analysis, and ensures competitive pricing.
- Workflow Governance: Be part of a team that integrates digital and human approvals, ensuring seamless integration with a broader ecosystem of applications.
- Global Exposure: Collaborate with reputed global clients, delivering top-notch solutions.
- Career Growth: Join high-caliber project teams with front-end, back-end, and database developers, offering ample opportunities to learn, grow, and advance your career.

If you have strong technical skills, effective communication abilities, and a commitment to quality, we want you on our team!

Ready to make an impact? Apply now and be part of our journey to success!

Responsibilities

  • Design, develop, and maintain backend services and RESTful APIs using Node.js
  • Build and deploy containerized applications on Kubernetes across AWS and Azure environments
  • Collaborate with frontend, DevOps, and platform teams to define and deliver features
  • Implement and maintain CI/CD pipelines for automated build, test, and deployment
  • Ensure API performance, reliability, and security through proper design and monitoring
  • Manage and optimize cloud resources across AWS and Azure
  • Write and maintain unit, integration, and API tests to ensure code quality
  • Participate in code reviews, technical discussions, and architecture decisions
  • Troubleshoot production issues and contribute to incident resolution
  • Stay current with emerging technologies in backend development, cloud services, and container orchestration

Skills

Must have

  • Years of Experience:
  • 4-6 years in backend application development, with at least 1-2 years working with cloud services and container orchestration.
  • Backend Development
  • Strong proficiency in Node.js (Express, Fastify, or NestJS)
  • Deep understanding of RESTful API design, versioning, and best practices
  • Experience with API authentication and authorization (OAuth2, JWT, API keys)
  • Proficiency in JavaScript and TypeScript
  • Understanding of event-driven architecture and message queues (e.g., RabbitMQ, Kafka, SQS)
  • Cloud Services
  • Hands-on experience with AWS (EC2, S3, Lambda, SQS, SNS, IAM, CloudWatch)
  • Working knowledge of Azure (App Service, Azure Functions, Azure DevOps, AKS)
  • Understanding of cloud networking, security groups, IAM policies, and secret management
  • Container Orchestration
  • Proficiency in Docker — building, optimizing, and managing container images
  • Hands-on experience with Kubernetes (K8s) — deployments, services, config maps, secrets, ingress, helm charts
  • Experience with managed Kubernetes services (EKS, AKS)
  • DevOps
  • Experience with CI/CD pipelines using GitLab CI, GitHub Actions, Jenkins, or Azure DevOps
  • Familiarity with Infrastructure as Code (IaC) tools such as Terraform or Helm

Nice to have

  • Database Management
  • Experience with SQL databases (PostgreSQL, MySQL) and NoSQL databases (MongoDB, DynamoDB, Redis)
  • Understanding of database optimization, indexing, and query performance tuning
  • Observability and Monitoring
  • Familiarity with logging and monitoring tools (CloudWatch, Prometheus, Grafana, ELK stack)
  • Experience with distributed tracing (Jaeger, OpenTelemetry)
  • Security
  • Understanding of API security best practices (rate limiting, input validation, CORS, HTTPS enforcement)
  • Familiarity with container security scanning and vulnerability management
  • Testing
  • Experience with automated testing frameworks (Jest, Mocha, Supertest)
  • Understanding of integration and contract testing for APIs
  • Soft Skills
  • Strong problem-solving abilities and attention to detail
  • Good communication and collaboration skills
  • Comfortable working in an agile development environment

Other

Languages: English: C2 Proficient

Seniority: Regular