Principal NodeJS Backend Developer

About Voicemod ✨ 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! Our Values 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 Principal NodeJS Backend Developer , you will act as a technical leader and strategic partner within our Engineering organization. Beyond building high-quality backend services, you will set technical direction, mentor engineers across levels, and influence cross-team decisions that shape the scalability, reliability, and performance of Voicemod’s platform. This is not just a coding role, it’s about amplifying our engineering impact , guiding architectural evolution, and ensuring backend initiatives remain aligned with company-wide goals.. You’ll work closely with Product, Data, and DevOps, helping us build systems that support millions of users while keeping speed, quality, and security at the core. Our Tech Stack: Express - Node.js MongoDB Google Cloud Platform Kubernetes GitLab What you'll do Define and evolve backend architecture and guidelines to ensure scalability, resilience, and long-term maintainability. Act as a technical reference for backend and cross-functional teams, reviewing designs, sharing best practices, and mentoring engineers from junior to staff levels. Influence engineering strategy by connecting technical decisions with business impact, balancing speed of delivery with quality and risk management. Lead complex initiatives such as global service scalability, multi-region deployments, and system performance optimization . Collaborate with security and data teams to drive standards in privacy, compliance, and data protection . Represent backend engineering in company-wide technical forums , ensuring alignment across functions. Stay ahead of industry trends and introduce tools, frameworks, or approaches that elevate Voicemod’s engineering practices. What you'll need ✅ 10+ years of experience in backend developmen t, with at least 3+ years in technical leadership roles (Staff, Principal, or equivalent). Proven expertise in distributed systems, microservices, and event-driven architecture s. Strong track record of designing systems at scale (millions of users, high availability, low latency). Deep understanding of Node.js, cloud infrastructure (GCP/AWS/Azure), and Kubernetes. Experience defining and rolling out e ngineering standards, guidelines, and architecture principles. Excellent communication skills to influence both engineers and non-technical stakeholders. Demonstrated ability to mentor and grow engineering talent , fostering a culture of excellence and collaboration. Proactive mindset with a willingness to tackle challenges hands-on. High standards across your work, collaboration, and project involvement. A passion for continuous learning and growth, aligned with Voicemod's mission, products, and technology. Bonus Points Experience with real-time communication, audio/video processing, or gaming platforms. Knowledge of event streaming platforms (Kafka, Pub/Sub). Contribution to open-source projects or thought leadership (talks, publications). Hiring Process ⚙️ Our interview process takes place on Google Meet and includes the following stages: 1️⃣ External Talent Partner Interview – Initial conversation with our recruitment partner to review your background and confirm alignment with the role (≈ 60 min). 2️⃣ Hiring Manager Interview – Interview with the Manager and the Director of Engineering (Hiring Manager) to validate your skills, seniority, and professional experience (≈ 120 min). 3️⃣ Technical Interview – Live coding session with two Backend team members to assess your technical abilities (≈ 60 min). 4️⃣ HR Interview – Final conversation with our People team to answer any remaining questions and cover practical details (up to 45 min). ⚡ Don't meet 100% of the criteria? 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. Important for Applicants A minimum B2 level in English is required. We assess communication skills during interviews. Video interviews : Cameras on, no virtual backgrounds. We use Googe Meets. Timezone : Most of our jobs require people to be based in a country within a ±2 hour range from Central European Time (CET/CEST). Work location transparency : Be upfront about where you'll work from — we value honesty! If you want to have a look on how to get a successful job application, have a look here ! Why You’ll Love Working at Voicemod ❤️ 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 (for employees based in Spain). 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. Want to know more about us? Youtube | Careers Page | Glassdoor | Blog | Medium | Twitter | Instagram | Linkedin | TikTok | Facebook If you haven't used Voicemod yet, you can download it here !