Senior Node.js Developer

With a sense of ownership and collaboration, we join forces to remove barriers and drive

business. We don't just offer digital solutions; we build the ecosystem that

drives entrepreneurship in Brazil.

"It's always been this way" doesn't define us: we question, learn, and evolve with every

challenge, turning mistakes into innovation. And to do this, we form a team that plays together,

because we understand that the success of the whole is greater than any individual interest.

Our mission is to simplify the day-to-day for entrepreneurs, and we do this with

honesty in relationships and a focus on what truly matters.

If you seek consistent results that leave a legacy and believe that technology

only makes sense when it guarantees the customer's success, your place is with us!

🔍 About the area:

We are the platform that connects small and medium-sized retailers to the country's largest carriers, democratizing access to competitive shipping rates.

Working at Melhor Envio means being willing to remove delivery barriers and ensure that products reach their final destination quickly and safely.

🚀 What you will transform (Challenge):

In the LWSA ecosystem, you lead change. Your goal will be to simplify the

customer journey and ensure that our solutions become increasingly fluid,

directly impacting thousands of businesses that depend on our technology to

grow.

✨ What makes our eyes shine:

We seek people who live our essence and share our purpose:

we transform businesses to grow and prosper through technology.

If you put the customer at the center, have a collaborative spirit and focus on what matters,

always questioning, learning, and evolving, you already have what we need. We value

those who get their hands dirty and take responsibility!

✨ What your day-to-day will look like:

Among the tasks performed daily, we can highlight:

• Contribute directly to building a product that optimizes e-commerce logistics nationwide, causing a real impact on people's lives;
• Work in squads that use agile methodologies to deliver constant value to our customers;
• Collaborate on the development of new features, following the architecture and best practices defined by the team, with a focus on your development and code quality;
• Actively participate in Code Review sessions, focusing on individual technical evolution and maintaining the team's quality standards;
• Perform preventive maintenance and bug fixes, using debugging processes to deepen knowledge of the business domain;
• Support the monitoring of applications in production, using observability tools to ensure our services are always available;
• Help the team with technical analysis and task refinement, using AI tools (Copilot/Cursor and/or Claude) to accelerate productivity and code precision;
• Participate in planning and delivery cycles, and assist in resolving incidents with the support of more experienced developers;
• Maintain active curiosity, researching and sharing with the team what you are learning about new technologies;
• Learn a lot and share knowledge.

Requirements and qualifications:

📝 And to ace it, you will need:

• Solid experience in NodeJS development, preferably with the NestJS framework, and/or solid experience with PHP, preferably with the Laravel Framework;
• Mastery of service architecture and integrations via APIs (REST, RPC, or GraphQL);
• Experience with relational databases (e.g., PostgreSQL, MySQL) and/or NoSQL (e.g., MongoDB);
• Familiarity with Docker for running isolated development environments;
• Knowledge of AWS cloud;
• Knowledge of web technology fundamentals and their main protocols and standards such as: TCP/UDP, HTTP/HTTPS, SMTP, SSH, FTP, SSL/TLS, DNS, WebSocket, OAuth, JWT, RestFul;
• Knowledge of monitoring and observability;
• Solid knowledge of design patterns, SOLID principles, and writing automated tests;
• Good interpersonal communication to interact with different areas and clarity in exposing technical difficulties;
• Proactivity and an analytical profile to investigate problems autonomously before escalating.
• Autonomy and ownership: takes on problems end-to-end and seeks solutions, not just pointing them out.
• Continuous learning mindset: questions the status quo and seeks constant improvement, collective thinking (Flamingo spirit).

💌 We will love it if you have:

• Familiarity with AWS services (S3, Lambda, SQS, and RDS);
• Notions of observability (New Relic, Datadog, or Grafana);
• Knowledge of Deploy and CI/CD strategies (GitHub Actions or GitLab CI);
• Interest in event-driven architectures and messaging;
• Curiosity about application security and OWASP Top 10 practices;
• Familiarity with MongoDB;
• Knowledge of PHP/Laravel or Golang;
• Curiosity about developing high-availability software.
• Experience in Logistics or high-scale environments.

🍃 Benefits for your journey:

● For your day-to-day

• Childcare Assistance
• iFood Benefits Meal Voucher
• Transportation Voucher

● Health and Well-Being

• Medical Assistance
• Dental Assistance
• MetLife Life Insurance
• Wellhub (Formerly Gympass)

● Advantages and Partnerships

• SESC Credential
• Day Off in your birthday month
• OnHappy (Subscription for discounts on accommodations and tickets)
• Flockr Pet Health Plan
• Profit Sharing Program (PPR)

💡Why is this role for you?

Here you have space to build your own trajectory and grow alongside one of the

largest technology ecosystems in the country.

You will be part of an environment that values candid debates, encourages innovation, and

offers the opportunity to generate real and lasting impact in the digital market.

We believe that nothing great is built alone, therefore, your evolution here is

constant and collective.