Senior JavaScript Engineer

About Ciklum

Ciklum is a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live.

About the Senior JavaScript Engineer Role

As a Senior JavaScript Engineer, you will become a part of a cross-functional development team engineering experiences of tomorrow. Together, you will work on a project delivering global booking and ticketing services for the arts and entertainment industry, ensuring scalable backend systems and reliable cloud-native solutions.

Responsibilities

• Take ownership of the full software development lifecycle from design through development, testing, deployment, and maintenance.
• Develop and maintain robust, scalable, and high-performance backend systems using JavaScript/TypeScript with Node.js and Next.js.
• Design backend services including RESTful and GraphQL APIs, serverless architectures, microservices, and workflow orchestrations with state machines.
• Compose and document system architecture and sequence diagrams to illustrate service interactions and data flows.
• Design, implement, and maintain relational and and non-relational databases with a focus on data modeling, integrity, performance, and maintainability.
• Utilize AWS services and serverless architectures including Lambda, Step Functions, AppSync, EventBridge, SQS, Kinesis, EC2, and Elastic Beanstalk.
• Manage and optimize CI/CD pipelines using GitLab CI/CD.
• Utilize infrastructure-as-code and container orchestration tools such as Terraform and Kubernetes.
• Conduct code reviews, provide constructive feedback, and share knowledge with the team.
• Work in a Lite Agile environment to adapt to changing requirements.

Requirements

• 5+ years of backend development experience.
• Proficiency in JavaScript/TypeScript with Node.js and Next.js.
• Ability to analyze architecture and service dependencies and create sequence diagrams and technical documentation based on implementation requirements.
• Experience with GraphQL and REST including API design and architecture.
• Hands-on experience with SQL and NoSQL databases and ORM tools.
• Excellent knowledge of AWS services and serverless computing including Lambda, Step Functions, AppSync, EventBridge, and related services.
• Proficiency with CI/CD tools, especially GitLab CI/CD.
• Experience with Kubernetes and Terraform for container orchestration and infrastructure management.
• Fluency in English with excellent written and spoken communication skills.

Desirable

• Experience with React.
• Experience with Java.
• Experience with Spring.

Personal Skills

• Openness and adaptability with willingness to learn new tools and technologies as needed.

What's in it for you?

• Strong community: Work alongside top professionals in a friendly, open-door environment.
• Growth focus: Take on large-scale projects with a global impact and expand your expertise.
• Tailored learning: Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company-paid certifications.
• Endless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands-on experience with cutting-edge technologies.
• Enjoy radical flexibility – work remotely or from an office, your choice.
• Care: Medical subscription to Regina Maria, meal tickets of 40 ron net/day worked.

Key skills/competency

• JavaScript
• Node.js
• Next.js
• AWS
• GraphQL
• Kubernetes
• Terraform
• CI/CD
• Backend Development
• Serverless Architecture