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Gdańsk, Poland Wrocław, Poland Remote JavaScript

Senior Full Stack Engineer

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Description

Ciklum is looking for a  Senior Full-Stack Developer 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.

About the role:

As a Senior Full-Stack Developer, you will be a key member of a team focused on enhancing and integrating with our core Salesforce platform. You will participate in all stages of the development lifecycle — from ideation and design to architecture, implementation, deployment, and maintenance. This
project enhances trust and transparency on a global consumer review platform by detecting and preventing fraudulent activities, such as fake reviews, and ensuring policy compliance through AI, data analysis, and scalable fraud detection systems.

Responsibilities

  • Collaborate closely with Product, Design, and Data Science in a full ownership team
  • Drive system design and technical decision-making
  • Use TypeScript to develop scalable backend services and clean, reusable frontend components
  • Build and maintain RESTful APIs and distributed cloud services
  • Contribute to planning, implementing, and releasing new features
  • Troubleshoot and resolve issues across the tech stack
  • Write clean, maintainable, and testable code
  • Actively participate in code reviews and team discussions
  • Support and inspire the team with your technical expertise and problem-solving mindset

Requirements

  • 5+ years of hands-on experience in fullstack web development
  • Strong knowledge of TypeScript
  • Experience with AWS services (e.g., ECS, Lambda, SQS, SNS)
  • Skilled in building and consuming RESTful APIs
  • Experience working with NoSQL databases (e.g., MongoDB, DynamoDB) and relational databases (e.g., PostgreSQL)
  • Familiarity with containerization using Docker
  • Hands-on experience with DevOps practices and CI/CD pipelines
  • Experience with monitoring and logging tools (e.g., CloudWatch, Datadog)
  • Understanding of cloud infrastructure as code (e.g., CloudFormation)
  • Strong problem-solving skills and attention to code quality
  • Upper-intermediate or higher level of spoken and written English

Desirable

  • Experience with GCP and services like BigQuery
  • Exposure to Python and Node.js
  • Hands-on experience with .NET on the backend
  • Frontend experience with React, Next.js, CSS Modules, SASS, or Styled Components
  • Familiarity with event-driven architectures and microservices
  • Experience in data analysis or fraud detection solutions

Personal skills

  • Accountability: You take ownership and follow through on your responsibilities
  • Drive: You're proactive and results-oriented, always seeking better ways to solve problems
  • Self-development: You stay curious, seek feedback, and aim for continuous improvement
  • Effective communication: You communicate your ideas clearly and collaborate effectively in a team
  • Mentoring: You're open to helping less experienced team members and sharing knowledge

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.

Want to learn more about us? Follow us on  Instagram, Facebook, LinkedIn.

Explore, empower, engineer with Ciklum!

Experiences of tomorrow. Engineered together

Interested already?

We would love to get to know you! Submit your application. Can’t wait to see you at Ciklum.

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