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Senior Back-End JS Engineer Job Opening In Gdańsk – Now Hiring CobbleWeb


Job description

This position is 100% remote.

What are we looking for?
  • Purpose-Driven: You understand how your work impacts end-users and business goals.

    You have a result-oriented builder’s mindset and are always curious to learn more. 
  • Complex Problem Solver: You thrive on managing complexity and are adept at designing user-centric solutions that balance technical and business needs. 
  • Passionate & Committed: You take pride in your work and view it as more than just a job.  You are motivated to contribute to our mission: to democratise the development of online marketplaces like Amazon, Airbnb and Uber.
  • Effective Communicator & Team Player: You have strong communication skills, give and receive feedback well, and collaborate effectively within cross-functional teams. 

Why CobbleWeb? 
  • Professional Growth: Growth at CobbleWeb is non-negotiable.

    Work on diverse and challenging that will push your skills to new heights.

    Be part of a rapidly-growing team that values your input and encourages continuous learning.
  • Purpose-Driven Process: Our structured approach to product development is rooted in Agile principles and Lean methodology.

    Every project phase is well-planned, starting with an , which ensures clarity and productivity. 
  • Inclusive Culture: Join a diverse, multicultural team where every opinion is valued.

    Collaborate across disciplines to deliver exceptional solutions.

But don’t take our word for it.

Check out our and the stats don’t lie either: 
  • 4.5* employee rating on Glassdoor.
  • 3.5 years average employee tenure.
  • 5* client rating on Clutch.
  • 30+ marketplaces built since 2012.

Notable exits and incredible growth stories:
  • , a parking space app, acquired by a leading Dutch parking operator.
  • , an award-winning neobank & customer loyalty network, acquired by European fuel conglomerate, AVIA.
  • , an early-stage event ticket marketplace, already generates millions of euros in revenue.
  • , an innovative property management platform, has expanded to the UK, UAE, Spain, France, Ireland, Australia and South Africa.

The online marketplace model is taking over the world:
  • $3.5 trillion: global B2C marketplace sales (2023) .
  • 67%: marketplaces’ share of global ecommerce .
  • 310 million: active users on Amazon.

    If they were citizens, it would be the world’s 4th largest country! 

Massive opportunities for growth:
  • The B2B ecommerce market is four times the size of B2C ecommerce, with only a fraction currently served by marketplace platforms.
  • Other growth areas include niche verticals, hyper-localisation, and service marketplaces.
  • Third-party integrations such as fintech, SaaS, and procurement tools are supercharging marketplaces and also driving growth.
  • Marketplaces are early adopters of advanced technology such as AI, ML, and IoT, driving both innovation and growth.

Job requirements:
  • NodeJS frameworks, e.g. Nest or Express (3+ years experience).
  • MySQL and PostgreSQL expert (3+ years experience).
  • REST APIs.
  • Docker (local and production environments).
  • Strong understanding and proven implementation of Agile methodologies.
  • Proven application of Test Driven Development within a Continuous Integration/Continuous Delivery environment.
  • Experience with test automation.
  • RabbitMQ, Redis, AWS, or ElasticSearch experience is a plus.

Required Skill Profession

Computer Occupations


  • Job Details

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Unlock Your Senior Back Potential: Insight & Career Growth Guide


Real-time Senior Back Jobs Trends (Graphical Representation)

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Are You Looking for Senior Back End JS Engineer Job?

Great news! is currently hiring and seeking a Senior Back End JS Engineer to join their team. Feel free to download the job details.

Wait no longer! Are you also interested in exploring similar jobs? Search now: .

The Work Culture

An organization's rules and standards set how people should be treated in the office and how different situations should be handled. The work culture at CobbleWeb adheres to the cultural norms as outlined by Expertini.

The fundamental ethical values are:

1. Independence

2. Loyalty

3. Impartiapty

4. Integrity

5. Accountabipty

6. Respect for human rights

7. Obeying Poland laws and regulations

What Is the Average Salary Range for Senior Back End JS Engineer Positions?

The average salary range for a varies, but the pay scale is rated "Standard" in Gdańsk. Salary levels may vary depending on your industry, experience, and skills. It's essential to research and negotiate effectively. We advise reading the full job specification before proceeding with the application to understand the salary package.

What Are the Key Qualifications for Senior Back End JS Engineer?

Key qualifications for Senior Back End JS Engineer typically include Computer Occupations and a list of qualifications and expertise as mentioned in the job specification. The generic skills are mostly outlined by the . Be sure to check the specific job listing for detailed requirements and qualifications.

How Can I Improve My Chances of Getting Hired for Senior Back End JS Engineer?

To improve your chances of getting hired for Senior Back End JS Engineer, consider enhancing your skills. Check your CV/Résumé Score with our free Tool. We have an in-built Resume Scoring tool that gives you the matching score for each job based on your CV/Résumé once it is uploaded. This can help you align your CV/Résumé according to the job requirements and enhance your skills if needed.

Interview Tips for Senior Back End JS Engineer Job Success

CobbleWeb interview tips for Senior Back End JS Engineer

Here are some tips to help you prepare for and ace your Senior Back End JS Engineer job interview:

Before the Interview:

Research: Learn about the CobbleWeb's mission, values, products, and the specific job requirements and get further information about

Other Openings

Practice: Prepare answers to common interview questions and rehearse using the STAR method (Situation, Task, Action, Result) to showcase your skills and experiences.

Dress Professionally: Choose attire appropriate for the company culture.

Prepare Questions: Show your interest by having thoughtful questions for the interviewer.

Plan Your Commute: Allow ample time to arrive on time and avoid feeling rushed.

During the Interview:

Be Punctual: Arrive on time to demonstrate professionalism and respect.

Make a Great First Impression: Greet the interviewer with a handshake, smile, and eye contact.

Confidence and Enthusiasm: Project a positive attitude and show your genuine interest in the opportunity.

Answer Thoughtfully: Listen carefully, take a moment to formulate clear and concise responses. Highlight relevant skills and experiences using the STAR method.

Ask Prepared Questions: Demonstrate curiosity and engagement with the role and company.

Follow Up: Send a thank-you email to the interviewer within 24 hours.

Additional Tips:

Be Yourself: Let your personality shine through while maintaining professionalism.

Be Honest: Don't exaggerate your skills or experience.

Be Positive: Focus on your strengths and accomplishments.

Body Language: Maintain good posture, avoid fidgeting, and make eye contact.

Turn Off Phone: Avoid distractions during the interview.

Final Thought:

To prepare for your Senior Back End JS Engineer interview at CobbleWeb, research the company, understand the job requirements, and practice common interview questions.

Highlight your leadership skills, achievements, and strategic thinking abilities. Be prepared to discuss your experience with HR, including your approach to meeting targets as a team player. Additionally, review the CobbleWeb's products or services and be prepared to discuss how you can contribute to their success.

By following these tips, you can increase your chances of making a positive impression and landing the job!

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