Senior NodeJS Backend Developer

At Voicemod, our mission is to enable people to supercharge their voice wherever they communicate, fostering self-expression and belonging. We create audio tools that let gamers, streamers, and content creators shape their online identity with voice changers, soundboards, and real-time effects. Millions of people use Voicemod every day to enhance their interactions and have fun.

We’re a team of 90+ people working remotely or from our Valencia HQ or our coworking space in Barcelona. We’re passionate about pushing the boundaries of audio and building products that make digital spaces more expressive and playful. At Voicemod, we care deeply about our people and users — if you share our passion, we’d love to meet you!

At Voicemod, our values are more than just words — they shape how we work every day:

🚀 Be Brave – Courage drives progress.
🏆 Show Ownership and Accountability – Impact begins with ownership.
🎸 Embrace Passion at Play – Passion builds success.
🤝 Grow Together – Go further by growing together.

About the role 💡

As a NodeJS Backend Developer, you will build and maintain backend services, data models, and APIs that power Voicemod. You’ll work alongside a senior developer and closely with frontend engineers, product, and DevOps to deliver reliable features and improve performance, scalability, and observability across our platform.

Our Tech Stack:

• Express - Node.js

• MongoDB, Redis

• Google Cloud Platform

• Kubernetes

• GitLab

• Build and evolve backend services and REST APIs that integrate with frontend features and client-side agents.

• Collaborate with the team and stakeholders to clarify requirements, break work into deliverable chunks, and propose pragmatic solutions.

• Improve reliability and performance through profiling, monitoring, and incremental refactoring.

• Apply security best practices (authentication/authorization, data handling, secrets management) and help keep our services safe.

• Write maintainable code with solid test coverage; participate actively in code reviews.

• Diagnose production issues, perform root-cause analysis, and ship fixes with proper safeguards.

• Create reusable modules/libraries and improve developer experience through better tooling and documentation.

• 3+ years of hands-on experience as a Backend Developer (Node.js).

• Solid experience designing and consuming REST APIs.

• Experience working with databases.

• Good engineering fundamentals: clean code, debugging, and maintainability.

• Practical testing experience (unit/integration tests).

• Comfortable with Git and CI/CD basics.

• Interest in monitoring/observability and using data to improve system performance.

• Experience with Docker or Terraform.

• Experience tuning MongoDB query performance.

• Knowledge of Mongo Atlas Search.

• Experience using DDD and Clean architecture principles

• Passion for audio, music, recording, or sound.

Our interview process takes place on Google Meet and tends to consist of the following stages:

• 1️⃣ Talent Acquisition Call – Get to know Voicemod and share your experience (45 min).

• 2️⃣ Hiring Manager Interview – Deep dive into your background and role expectations (60 min).

• 3️⃣ Technical Interview – Showcase your skills in a real-world task (Up to 120 min).

If you want to have a look on how to get a successful job application, have a look here!

• English Proficiency: A minimum of B2 level in English is required for this position. We will assess your communication skills during the initial interview.

• On-Call Rotation: This role participates in a paid, mandatory week-long on-call rotation. Incidents are currently rare, but you must be reachable and able to respond—including having your work laptop with you.

• Video Interview Requirement: All candidates invited for an interview must join with their cameras on. We request no use of virtual backgrounds during the interview.

• LocationAccuracy: Please provide accurate information about the country from which you will work. We value transparency and will verify this information during the selection process.

Studies show that many people—especially from underrepresented backgrounds—tend to apply only when they meet every requirement. At Voicemod, we value potential and learning capacity. If you match at least 75% of the requirements, we encourage you to apply—skills can be developed, and we’d love to hear from you.

• Flexible Working Hours ⏰ – Adapt your job to your lifestyle. You do you!

• Remote Working 🌍 – Choose to work from home, our Valencia HQ, or the coworking space in Barcelona.

• 23 vacation days 🌴 – Plus an extra week off in August and your birthday.

• Anniversary Celebration Program 🎉 – Unlock extra days off, volunteering days, or time to enjoy unique experiences as you reach work milestones.

• Generous Referral Program 💼 – Earn rewards for helping us find and hire amazing talent.

• Extra time off on demand ⏳ – For those tough moments when you need a break.

• Wellbeing 🏥 – Paid sick leave, maternity/paternity leave, and healthcare insurance.

• Flexible Benefits Plan 💳 – Available for employees based in Spain, allowing you to optimize part of your salary (e.g., meals, transport, childcare) and save a significant amount of money each year.

• Remote Stipend 💸 – To cover remote working costs.

• Free English or Spanish lessons 📚 – From beginner to advanced levels.

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