• Expertini Resume Scoring: Our Semantic Matching Algorithm evaluates your CV/Résumé before you apply for this job role.
Poland Jobs Expertini

Mid-Level Kotlin Backend Developer [Remote] Job Opening In Warsaw – Now Hiring 300Brains Sp. z o. o.


Job description

Mid-Level Kotlin Backend Developer


 


[REMOTE]


 


About us:


We are an international, Polish-American company called 300Brains, operating in the area of Information Technology with the aim of supporting international companies, primarily startups, in the implementation of their brilliant ideas.


 We’re looking for a skilled Kotlin Backend Developer to join an international team working on a distributed ledger-based platform for the insurance industry.

You’ll play a key role in maintaining and expanding a microservices-based backend built fully in Kotlin.


 


✅ What you’ll do:




  • Design, develop, and maintain Kotlin microservices




  • Collaborate within a Scrum team: participate in daily stand-ups, sprint planning, and retrospectives




  • Write clean, maintainable, well-tested code




  • Take part in code reviews and propose architectural improvements




  • Interact with RESTful APIs and smart contract logic




  • Contribute to technical documentation and deployment processes




🛠 Required skills:




  • 2+ years of commercial Kotlin experience or 3+ years of Java with strong willingness to transition to Kotlin




  • Solid understanding of backend development (microservices, REST APIs)




  • Familiarity with testing methodologies (unit & integration tests)




  • Strong communication skills in English (spoken and written)




🌟 Nice to have:




  • Knowledge of Distributed Ledger Technology or blockchain (Corda in particular)




  • Experience with cloud environments (GCP preferred), Docker, or Kubernetes




  • Familiarity with frontend tech (JS/React) is a plus for cross-functional collaboration




🎁 What we offer:




  • 20 days of paid vacation annually – take your well-deserved break




  • Agile training program with a certified diploma from 300Brains




  • Personal training & conference budget to grow your skills




  • Work with international professionals on cutting-edge projects




  • We support your passions – we’ll help finance your hobby




  • Work your way – remote work!




  • Access to a comprehensive medical and sports benefits package




 


Do IT Smart!


 

Required Skill Profession

Computer Occupations


  • Job Details

Related Jobs

EY hiring Senior Kotlin Backend Developer Job in Katowice, Silesian Voivodeship, Poland
EY
Katowice, Silesian Voivodeship, Poland
ClickUp hiring Mid or Senior Level Backend Engineer Job in poland, poland, Poland
ClickUp
poland, poland, Poland
Reply Group hiring SENIOR BACKEND DEVELOPER - KOTLIN / SPRING BOOT Job in Katowice, Silesian Voivodeship, Poland
Reply Group
Katowice, Silesian Voivodeship, Poland
BlueBinary.io hiring Mid/Senior PHP Backend Developer Job in Wrocław, Lower Silesian Voivodeship, Poland
BlueBinary.io
Wrocław, Lower Silesian Voivodeship, Poland
SCALO hiring Kotlin Developer Job in Wrocław, Lower Silesian Voivodeship, Poland
SCALO
Wrocław, Lower Silesian Voivodeship, Poland
EY hiring Kotlin Backend Engineering Manager Job in Katowice, Silesian Voivodeship, Poland
EY
Katowice, Silesian Voivodeship, Poland
CGI hiring Data Analyst (mid level) Job in Warsaw, Masovian Voivodeship, Poland
CGI
Warsaw, Masovian Voivodeship, Poland
Dotlinkers hiring Ruby Engineer (mid-level) Job in poland, poland, Poland
Dotlinkers
poland, poland, Poland
Experis hiring Mid-Level SSAS Engineer Job in Katowice, Silesian Voivodeship, Poland
Experis
Katowice, Silesian Voivodeship, Poland
Legatics hiring Mid-Level QA Engineer Job in Poland
Legatics
Poland
Groupe SII hiring Java / Kotlin Developer Job in Wrocław, Lower Silesian Voivodeship, Poland
Groupe SII
Wrocław, Lower Silesian Voivodeship, Poland
IT Leasing Team Sp. z o.o. hiring Kotlin Developer (+ Python) Job in Warsaw, Masovian Voivodeship, Poland
IT Leasing Team Sp. z o.o.
Warsaw, Masovian Voivodeship, Poland
Mobica hiring Senior Kotlin Developer Job in Warsaw, Masovian Voivodeship, Poland
Mobica
Warsaw, Masovian Voivodeship, Poland
SCALO Sp. z o.o. hiring Java Developer (Kotlin) Job in Kraków, Lesser Poland Voivodeship, Poland
SCALO Sp. z o.o.
Kraków, Lesser Poland Voivodeship, Poland
SCALO hiring Java Developer (Kotlin) Job in Kraków, Lesser Poland Voivodeship, Poland
SCALO
Kraków, Lesser Poland Voivodeship, Poland
Enginar.pl hiring Architekt IT (Junior/Mid-level) Job in Warsaw, Masovian Voivodeship, Poland
Enginar.pl
Warsaw, Masovian Voivodeship, Poland
in4ge hiring Rekruter 360 - Junior/Mid level Job in Warsaw, Masovian Voivodeship, Poland
in4ge
Warsaw, Masovian Voivodeship, Poland
Randstad Polska hiring GL Accountant (Mid - Senior Level) Job in Warsaw, Masovian Voivodeship, Poland
Randstad Polska
Warsaw, Masovian Voivodeship, Poland
Sportradar hiring Mid-Level Software Engineer (JAVA) Job in Warsaw, Masovian Voivodeship, Poland
Sportradar
Warsaw, Masovian Voivodeship, Poland
Enginar.pl hiring Architekt IT (Junior/Mid-level) Job in Warszawa, Województwo mazowieckie, Poland
Enginar.pl
Warszawa, Województwo mazowieckie, Poland
Confidential hiring Backend Developer Job in Poznań, Greater Poland Voivodeship, Poland
Confidential
Poznań, Greater Poland Voivodeship, Poland
Talan hiring BackEnd Developer Job in Warsaw, Masovian Voivodeship, Poland
Talan
Warsaw, Masovian Voivodeship, Poland
Coloplast hiring Backend Developer Job in Szczecin, West Pomeranian Voivodeship, Poland
Coloplast
Szczecin, West Pomeranian Voivodeship, Poland
10Clouds hiring Backend Developer Job in Warsaw, Masovian Voivodeship, Poland
10Clouds
Warsaw, Masovian Voivodeship, Poland
E Net Production hiring Backend Developer Job in Katowice, Silesian Voivodeship, Poland
E Net Production
Katowice, Silesian Voivodeship, Poland

Unlock Your Mid Level Potential: Insight & Career Growth Guide


Real-time Mid Level Jobs Trends (Graphical Representation)

Explore profound insights with Expertini's real-time, in-depth analysis, showcased through the graph here. Uncover the dynamic job market trends for Mid Level in Warsaw, Poland, highlighting market share and opportunities for professionals in Mid Level roles.

251 Jobs in Poland
251
72 Jobs in Warsaw
72
Download Mid Level Jobs Trends in Warsaw and Poland

Are You Looking for Mid Level Kotlin Backend Developer [Remote] Job?

Great news! is currently hiring and seeking a Mid Level Kotlin Backend Developer [Remote] 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 300Brains Sp. z o. o. 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 Mid Level Kotlin Backend Developer [Remote] Positions?

The average salary range for a varies, but the pay scale is rated "Standard" in Warsaw. 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 Mid Level Kotlin Backend Developer [Remote]?

Key qualifications for Mid Level Kotlin Backend Developer [Remote] 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 Mid Level Kotlin Backend Developer [Remote]?

To improve your chances of getting hired for Mid Level Kotlin Backend Developer [Remote], 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 Mid Level Kotlin Backend Developer [Remote] Job Success

300Brains Sp. z o. o. interview tips for Mid Level Kotlin Backend Developer [Remote]

Here are some tips to help you prepare for and ace your Mid Level Kotlin Backend Developer [Remote] job interview:

Before the Interview:

Research: Learn about the 300Brains Sp. z o. o.'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 Mid Level Kotlin Backend Developer [Remote] interview at 300Brains Sp. z o. o., 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 300Brains Sp. z o. o.'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!

How to Set Up Job Alerts for Mid Level Kotlin Backend Developer [Remote] Positions

Setting up job alerts for Mid Level Kotlin Backend Developer [Remote] is easy with Poland Jobs Expertini. Simply visit our job alerts page here, enter your preferred job title and location, and choose how often you want to receive notifications. You'll get the latest job openings sent directly to your email for FREE!