Senior Back End Engineer

Salary range: B2B - 30-34 E/h + VAT 💰

Ciklum is looking for a Senior Back End Engineer to join our team full-time in Poland.

We are 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.

As a Senior Back End Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. Our client is an American partner known for selling and distributing tickets for various events. One of the leading providers of booking and ticketing services in the arts and entertainment industry, operating on a global scale.

Responsibilities:

• Take ownership of the full software development lifecycle: Engagement from design through development, testing, deployment, and maintenance

• Develop and maintain Backend Solutions: Create robust, scalable, and high-performance backend systems using JavaScript/TypeScript (Node.js & Next.js)

• Design Backend Services: Create RESTful and GraphQL APIs, serverless architectures, microservices, and workflow orchestrations with state machines

• Compose system architecture and sequence diagrams: Create and document diagrams to illustrate service interactions and data flows

• Database Management: Design, implement, and maintain relational and non-relational databases focusing on data modeling, integrity, performance, and maintainability

• Cloud Services: Utilize AWS services and serverless architectures for deployment and management, including Lambdas, Step Functions (state machines), AppSync, EventBridge, SQS, Kinesis, EC2, Elastic Beanstalk

• DevOps Practices: Manage and optimize CI/CD pipelines using GitLab CI/CD for efficient build, test, and deployment processes

• Containerization and Orchestration: Utilize infrastructure-as-code and container orchestration tools such as Terraform and Kubernetes to manage infrastructure and application scalability

• Collaborate with Teams: Conduct code reviews, provide constructive feedback, and share knowledge with the team

• Agile Methodologies: Work in a Lite Agile environment to adapt to changing requirements

Requirements:

• 5+ Years of Backend Development Experience: Extensive experience with backend technologies

• Proficient in Javascript/Typescript + Node.js & Next.js: Deep understanding of Javascript/Typescript and it's frameworks/libraries/tools

• Analysis of architecture and service dependencies: Abitlity to create sequence diagrams and technical documentation based on implementation requirements

• Experience with GraphQL and REST: Expertise in API design, consumption and it's architecture

• Database Skills: Hands-on experience with SQL and NoSQL databases, as well as ORM tools

• AWS Services and Serverless Computing: Excellent knowledge of AWS services and serverless computing (Lambda, Step Functions, AppSync, EventBridge, etc.)

• Devops, CI/CD: Proficiency with CI/CD tools, especially GitLab CI/CD

• Kubernetes and Terraform: Experience with Kubernetes and Terraform for container orchestration and infrastructure management

• Fluency in English: Excellent communication skills both written and spoken

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

Desirable: 

• React, Java, Spring

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

• Flexibility: Enjoy flexibility – full remote working possibilities

• Care: We’ve got you covered with company-paid medical insurance, mental health support, and financial & legal consultations

About us:

At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress.With delivery centers in Wrocław and Gdańsk, our 300+ professionals in Poland drive forward-thinking solutions for global clients. Join a community where collaboration sparks innovation—and your impact reaches millions.

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Explore, empower, engineer with Ciklum!

Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum.