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1,213

Javascript jobs in Brazil

Senior Software Engineer (Node.js/JavaScript) — E-commerce

firmly

Jandira
On-site
BRL 120,000 - 160,000
6 days ago
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Desenvolvedor Full Stack SR | Foco em Node, Python, JavaScript frameworks (React, Vue.js, Angular)

Eurochem/Fertilizantes Tocantins

Brazil
Remote
BRL 80,000 - 120,000
7 days ago
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Desenvolvedor Web – PRESENCIAL

PETRA NORDESTE

Recife
On-site
BRL 120,000 - 160,000
Today
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Asesor Financiero San Onofre

Grupo Salinas

Brazil
On-site
BRL 20,000 - 80,000
Today
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Sr. Analyst, Windchill PLM Aftersales

AGCO

Jundiaí
Hybrid
BRL 80,000 - 100,000
Today
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Tech Lead Java

Bluesoft Sistemas

Jaboatão dos Guararapes
On-site
BRL 120,000 - 160,000
Today
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Engineering Manager

Memed Software

São Paulo
On-site
BRL 120,000 - 160,000
Today
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Tech Lead Java

Bluesoft Sistemas

Olinda
On-site
BRL 120,000 - 160,000
Today
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Desenvolvedor Full Stack

Tecnologia Única

São Paulo
On-site
BRL 80,000 - 120,000
Yesterday
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Analista de Sistemas Pl

Unimed Serra Gaúcha

Caxias do Sul
On-site
BRL 20,000 - 80,000
Yesterday
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Cabeleireira – São João de Meriri – WhatsApp

RIO EMPREGOS - RIO VAGAS DE EMPREGO RJ

São João de Meriti
On-site
BRL 120,000 - 160,000
Yesterday
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Cajero(a) Bancario

Grupo Salinas

Brazil
On-site
BRL 80,000 - 120,000
Yesterday
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Abonero(a) en moto $4500 semanal

Grupo Salinas

Brazil
On-site
BRL 120,000 - 160,000
2 days ago
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ANALISTA II DE DESENV. DE SOFTWARE

TOTVS

Ribeirão Preto
On-site
BRL 80,000 - 120,000
2 days ago
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Desenvolvedor de Software - Pleno (FullStack)

Montreal Oficial

Brazil
Remote
BRL 80,000 - 120,000
2 days ago
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Desenvolvedor(a) Pleno

Estuda.com

Cuiabá
On-site
BRL 120,000 - 160,000
2 days ago
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Repartidor en Moto Los Reyes

Grupo Salinas

Brazil
On-site
BRL 400,000 +
2 days ago
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Gestor de cobranza en moto Cuautzingo

Grupo Salinas

Brazil
On-site
BRL 20,000 - 30,000
2 days ago
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Repartidor en Moto Cuautzingo

Grupo Salinas

Brazil
On-site
BRL 20,000 - 80,000
2 days ago
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Gestor de cobranza en moto Huitzilzingo

Grupo Salinas

Brazil
On-site
BRL 120,000 - 160,000
2 days ago
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Staff Software Engineer - Full Stack / CS / São Paulo - SP

Bayer CropScience Limited

São Paulo
Hybrid
BRL 120,000 - 160,000
6 days ago
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Analista de Sistemas e Desenvolvimento III

Vagas Confidenciais

Fortaleza
On-site
BRL 120,000 - 160,000
3 days ago
Be an early applicant

Lead Software Engineer

Onebridge

Aparecida de Goiânia
Remote
BRL 120,000 - 160,000
3 days ago
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Lead Software Engineer

Onebridge

Ananindeua
Remote
BRL 120,000 - 160,000
4 days ago
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Lead Software Engineer

Onebridge

Embu das Artes
Remote
BRL 120,000 - 160,000
4 days ago
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Senior Software Engineer (Node.js/JavaScript)
firmly
Jandira
On-site
BRL 120,000 - 160,000
Full time
6 days ago
Be an early applicant

Job summary

A technology solutions firm in São Paulo is seeking a Senior Software Engineer to build and evolve backend services and APIs for e-commerce. Candidates should have over 6 years of experience in software development, particularly with Node.js and Cloudflare Workers. The position emphasizes collaboration and ownership, with opportunities for career growth and mentorship. A strong understanding of security fundamentals and proficiency in English are crucial for this role.

Benefits

Unimed Nacional health plan
Meal and food allowance
Life insurance
UniOdonto dental plan
Career growth & advancement opportunities
Learning & development support

Qualifications

  • 6+ years of software development experience required.
  • Strong experience as a Senior Software Engineer.
  • Good foundation in data modeling and databases.

Responsibilities

  • Build and evolve backend services and APIs in Node.js / JavaScript.
  • Develop edge / serverless systems on Cloudflare Workers.
  • Design and implement partner integrations.

Skills

Software development (6+ years)
Node.js / JavaScript
Cloudflare Workers
APIs (REST and/or event-driven)
Data modeling and databases (SQL/NoSQL)
Security fundamentals
Advanced English

Education

Bachelor's degree in Computer Science or Software Engineering
Job description
About

About firmly firmly solutions turn moments of product discovery (AI, social, content, ads, messaging, etc.) into instant purchases through its agentic commerce platform — with fast, embedded checkout and a strong focus on security and reliability.

What you’ll do
  • Build and evolve backend services and APIs in Node.js / JavaScript for critical e-commerce / checkout flows.
  • Develop edge / serverless systems on Cloudflare Workers (e.g., Workers and related services) focused on low latency, resilience, and scalability.
  • Design and implement partner integrations (APIs, webhooks,-driven flows) and near real‑time data sync (e.g., pricing, inventory, order status).
  • Improve observability (logs / metrics / tracing), incident readiness, and operational excellence (“you build it, you run it”).
  • Strengthen engineering quality through testing, code reviews, CI / CD improvements, and pragmatic architecture decisions.
  • Collaborate cross‑functionally (Product, Partnerships, Data) and contribute as a technical leader / mentor within the team.
Required skills & experience
  • 6+ years of professional software development experience.
  • Bachelor's degree in Computer Science or Software Engineering.
  • Strong experience as a Senior Software Engineer building production‑grade backends with Node.js / JavaScript.
  • Solid experience designing and operating APIs (REST and / or event‑driven systems) with a quality mindset.
  • Hands‑on experience with Cloudflare Workers (Workers and other services) OR strong serverless / edge background and willingness to go deep on Cloudflare.
  • Good foundation in data modeling and databases (SQL and / or NoSQL) for transactional systems.
  • Strong understanding of security fundamentals (authN / authZ, secrets management, least privilege, secure‑by‑default design).
  • Advanced English (spoken and written) — you’ll collaborate with a global team and participate in meetings / doc reviews in English.
Nice to have
  • Experience with payments, checkout, fraud / risk, or other mission‑critical e‑commerce systems.
  • Event‑driven architectures, async processing, queues / streams.
  • Performance / latency optimization, caching, edge patterns.
  • Infrastructure as Code (Terraform) and Cloudflare Workers tooling (Wrangler); plus modern DevOps practices.
Benefits & Career Growth
  • Unimed Nacional health plan (coverage for spouse / partner and children).
  • Meal and food allowance (VR / VA).
  • Life insurance.
  • UniOdonto dental plan.
  • Career growth & advancement opportunities (mentorship, ownership, and room to grow with the team).
  • Clear growth path (regular feedback and performance cycles).
  • Ownership & autonomy (high‑impact work, end‑to‑end responsibility).
  • Learning & development support.
How to apply

Click Easy Apply on LinkedIn and attach your resume (PDF).

Tip: parts of the interview process may be conducted in English.

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* The salary benchmark is based on the target salaries of market leaders in their relevant sectors. It is intended to serve as a guide to help Premium Members assess open positions and to help in salary negotiations. The salary benchmark is not provided directly by the company, which could be significantly higher or lower.

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