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

Backend Lead Developer Job Opening In Les – Now Hiring DcentraLab

Backend Lead Developer

    Spain Jobs Expertini Expertini Spain Jobs Les It Backend Lead Developer

Job description

Overview

Join to apply for the Backend Lead Developer role at DcentraLab

Get AI-powered advice on this job and more exclusive features.

Location: Remote/Belgrade
Type: Full-time

Web3 Index is a business development tool designed to discover, analyze, and curate the most comprehensive information about blockchain and crypto projects.

We aggregate and enrich data from sources like CoinGecko, CoinMarketCap, CypherHunter, and more.

Using AI (ChatGPT, Perplexity, CrewAI), advanced scraping techniques, and databases (PostgreSQL, MongoDB), we deliver high-quality, actionable insights to users.

Our platform powers:

  • Data aggregation & enrichment (socials, team, LinkedIn, project metadata).

  • AI-powered search & embeddings using MongoDB Vector DB.

  • AI agents that research and validate project data.

  • Integrations with TalkJS, Apollo, Slack, Twitter, Cloudflare, Postmark, Tranzilla, SimilarWeb, and more.

We are now looking for a Backend Lead Developer to lead our technical backend efforts, drive innovation, and ensure scalability of our growing platform.

Responsibilities
  • Lead backend development: Drive feature design, architecture decisions, and technical roadmap for the platform.

  • Research & Development (R&D): Experiment with new technologies, AI models, and scraping methods to continuously improve data quality and system performance.

  • Web scraping & data pipelines: Design and maintain robust scraping systems using Python libraries (e.G., Scrapy, Requests, BeautifulSoup, Playwright).

  • Database management: Optimize and maintain PostgreSQL (with Alembic/Alchemy) and MongoDB (vector search/embeddings).

  • AI & agent integration: Work with LLMs (ChatGPT, Perplexity) and CrewAI to build and scale AI-driven features.

  • DevOps & infrastructure: Manage AWS services (S3, EC2, Lambda, CloudWatch, API Gateway, SageMaker) and automation (Bash scripting, cron jobs).

  • Blockchain expertise: Analyze and interact with smart contracts (Solidity – entry level), understand blockchain data structures, and integrate relevant protocols.

  • Team leadership: Mentor developers, perform code reviews, enforce best practices, and ensure high-quality deliverables.

  • Integration management: Oversee and expand integrations with 3rd-party APIs and services (TalkJS, Slack, Twitter, Apollo, etc.).

Requirements
  • 5+ years of backend development experience, with at least 2 years in a lead/architect role.

  • Strong Python skills (FastAPI, Flask, Django or similar).

  • Proven experience with web scraping at scale.

  • Solid understanding of PostgreSQL (schemas, migrations, performance tuning) and MongoDB (vector DB, embeddings).

  • Familiarity with AI/LLM frameworks and data pipelines.

  • Hands-on AWS experience (EC2, S3, CloudWatch, API Gateway, Lambda, SageMaker).

  • Knowledge of blockchain/web3 ecosystems, with the ability to read/write Solidity contracts (entry-level).

  • Strong DevOps skills (Bash, cron, deployment automation).

  • Excellent problem-solving skills and ability to take ownership of complex systems.

  • Strong communication and leadership abilities.

Nice-to-Have
  • Experience with CrewAI or other agent frameworks.

  • Knowledge of data enrichment and NLP pipelines.

  • Exposure to business intelligence tools and analytics.

  • Open-source contributions or published work in scraping/AI/blockchain.

What We Offer
  • Opportunity to lead a cutting-edge Web3/AI product.

  • Work with modern stacks (AI, blockchain, web scraping, embeddings).

  • Flexible remote-first work environment.

  • Growth potential in leadership and architecture.

  • Competitive compensation package.

#J-18808-Ljbffr

Required Skill Profession

It


  • Job Details

Related Jobs

Yuki hiring Lead Backend Developer Job in Barcelona, Cataluña, Spain
Yuki
Barcelona, Cataluña, Spain
DcentraLab hiring Backend Lead Developer Job in Barcelona, Cataluña, Spain
DcentraLab
Barcelona, Cataluña, Spain
DcentraLab hiring Backend Lead Developer Job in Barcelona, Cataluña, Spain
DcentraLab
Barcelona, Cataluña, Spain
DcentraLab hiring Backend Lead Developer Job in Barcelona, Catalonia, Spain
DcentraLab
Barcelona, Catalonia, Spain
DcentraLab hiring Backend Lead Developer Job in Barcelona, Catalonia, Spain
DcentraLab
Barcelona, Catalonia, Spain
Yuki hiring Lead Backend Developer Job in Barcelona, Catalonia, Spain
Yuki
Barcelona, Catalonia, Spain
DcentraLab hiring Backend Lead Developer Job in barcelona, barcelona, Spain
DcentraLab
barcelona, barcelona, Spain
Yuki hiring Lead Backend Developer Job in barcelona, catalunya, Spain
Yuki
barcelona, catalunya, Spain
DcentraLab hiring Backend Lead Developer Job in Barcelona, Kingdom Of Spain, Spain
DcentraLab
Barcelona, Kingdom Of Spain, Spain
Yuki hiring Lead Backend Developer Job in barcelona, barcelona, Spain
Yuki
barcelona, barcelona, Spain
DcentraLab hiring Backend Lead Developer Job in barcelona, catalunya, Spain
DcentraLab
barcelona, catalunya, Spain
Yuki hiring Lead Backend Developer Job in Barcelona, Catalonia, Spain
Yuki
Barcelona, Catalonia, Spain
DcentraLab hiring Backend Lead Developer Job in Barcelona, Catalonia, Spain
DcentraLab
Barcelona, Catalonia, Spain
Luxoft hiring Lead -Java Developer - Backend Job in Madrid, Comunidad de Madrid, Spain
Luxoft
Madrid, Comunidad de Madrid, Spain
T-Systems Iberia hiring Lead Java Backend Developer Job in tarragona, tarragona, Spain
T-Systems Iberia
tarragona, tarragona, Spain
Joppy hiring Lead Backend Developer PHP Job in Barcelona, Cataluña, Spain
Joppy
Barcelona, Cataluña, Spain
Joppy hiring Lead Backend Developer PHP Job in Barcelona, Catalonia, Spain
Joppy
Barcelona, Catalonia, Spain
Luxoft hiring Lead -Java Developer - Backend Job in Madrid, Madrid, Spain
Luxoft
Madrid, Madrid, Spain
T-Systems Iberia hiring Lead Java Backend Developer Job in Catalonia, Catalonia, Spain
T-Systems Iberia
Catalonia, Catalonia, Spain
Luxoft hiring Lead -Java Developer - Backend Job in Madrid, Area Metropolitana (comarca), Spain
Luxoft
Madrid, Area Metropolitana (comarca), Spain
Luxoft hiring Lead -Java Developer - Backend Job in Comunidad de Madrid, Comunidad de Madrid, Spain
Luxoft
Comunidad de Madrid, Comunidad de Madrid, Spain
Luxoft hiring Lead -Java Developer - Backend Job in Madrid, Madrid, Spain
Luxoft
Madrid, Madrid, Spain
Luxoft hiring Lead -Java Developer - Backend Job in Madrid, Community of Madrid, Spain
Luxoft
Madrid, Community of Madrid, Spain
Luxoft hiring Lead -Java Developer - Backend Job in madrid, madrid, Spain
Luxoft
madrid, madrid, Spain
Joppy hiring Lead Backend Developer PHP Job in barcelona, barcelona, Spain
Joppy
barcelona, barcelona, Spain
Joppy hiring Lead Backend Developer PHP Job in barcelona, catalunya, Spain
Joppy
barcelona, catalunya, Spain
Luxoft hiring Lead -Java Developer - Backend Job in madrid, madrid, Spain
Luxoft
madrid, madrid, Spain
BrainRocket Limited hiring Team Lead Backend Developer (Node.js) Job in Valencia, Comunidad Valenciana, Spain
BrainRocket Limited
Valencia, Comunidad Valenciana, Spain
Capitole hiring Senior Backend Developer (Tech Lead) Job in Barcelona, Provincia de Barcelona, Spain
Capitole
Barcelona, Provincia de Barcelona, Spain
Jobgether hiring Lead Backend Developer (Lead Engineer) (Remote - Europe) Job in , , Spain, , , Spain, Spain
Jobgether
, , Spain, , , Spain, Spain
T-Systems Iberia hiring Lead Java Backend Developer (w/m) Job in Spain
T-Systems Iberia
Spain
Yukisoftware hiring July 14, 2025 Lead Backend Developer Job in Barcelona, Cataluña, Spain
Yukisoftware
Barcelona, Cataluña, Spain

Unlock Your Backend Lead Potential: Insight & Career Growth Guide


Real-time Backend Lead 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 Backend Lead in Les, Spain, highlighting market share and opportunities for professionals in Backend Lead roles.

21878 Jobs in Spain
21878
174 Jobs in Les
174
Download Backend Lead Jobs Trends in Les and Spain

Are You Looking for Backend Lead Developer Job?

Great news! is currently hiring and seeking a Backend Lead Developer 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 DcentraLab 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 Spain laws and regulations

What Is the Average Salary Range for Backend Lead Developer Positions?

The average salary range for a varies, but the pay scale is rated "Standard" in Les. 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 Backend Lead Developer?

Key qualifications for Backend Lead Developer typically include It 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 Backend Lead Developer?

To improve your chances of getting hired for Backend Lead Developer, 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 Backend Lead Developer Job Success

DcentraLab interview tips for Backend Lead Developer

Here are some tips to help you prepare for and ace your Backend Lead Developer job interview:

Before the Interview:

Research: Learn about the DcentraLab'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 Backend Lead Developer interview at DcentraLab, 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 DcentraLab'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 Backend Lead Developer Positions

Setting up job alerts for Backend Lead Developer is easy with Spain 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!