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Founding Forward Deployed Speech Engineer

Hybrid in Barcelona·Full-time·Added over a year ago

This job was published a year ago

SLNG

3 open roles

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Overview

Job details

Full-time hours
Per the ad.
Hybrid
Office and home days — the ad has the split.

Requirements

Have the right to work in Spain
SLNG doesn't mention sponsorship in the ad.
Work in English
English is required, per the ad.
Be near Barcelona for hybrid days
No relocation package mentioned.

Pay & benefits

What you'll get

We pay top of the market → We want serious talent in the team, and we benchmark compensation accordingly.
Equity → All full-time, permanent roles include stock options - we want everyone to share in the upside as we build.
Flexible benefits: Health insurance, gym, and more via Cobee.
L&D: Annual budget (up to €1000) for training, courses, or conferences.
Remote work support: Monthly stipend (up to €50) to cover wifi or other costs.
Great equipment: Laptop of your choice plus €500 to set up your workstation in year one, with top-ups in the following years.
Time off: Additional +5 days vacation on top of the statutory minimum.

Requirements

What we're looking for

Strong developer + communicator.
Python/Node.js/WebRTC/WebSockets.
Customer empathy + adaptability.

The role

SLNG is building the backbone for real-time speech AI, enabling developers to run voice applications anywhere in the world with local compliance and ultra-low latency.

Challenge → Today, most speech infrastructure is US-centric, unreliable, and difficult to deploy globally. SLNG is changing that by delivering a platform that is:

Local: deployed close to users and compliant with regional regulations
Fast: designed for real-time voice experiences
Open: built to integrate with the tools and workflows developers already use.

From real-time transcription to voice AI applications, SLNG is creating the Voice AI gateway that will empower the next generation of speech-powered products.

What you'll do

As Forward Deployed Speech Engineer you'll work directly with Luke, and customers, embedding with their teams to ship real-world speech AI. This is a technical + customer-facing role, perfect for builders who love variety

Integrate SLNG APIs into a customer's contact centre stack.
Prototype a voice agent for a fintech compliance use case.
Debug a live deployment in production with urgency.
Solve API/inference challenges.
Partner with customers to implement SLNG.
Capture customer feedback → product roadmap.

How you'll work

Hybrid by design → 3 days/week in the Barcelona office for collaboration and culture.

Hiring process

Intro call with one of the founders
Case Study
Panel conversation with members of the SLNG Team
Final discussions
Job offer

About SLNG

SLNG is an early-stage artificial intelligence company building infrastructure for real-time voice agents. Its platform sits between a customer's orchestrator and their speech models, providing routing, noise cancellation, transcription and text-to-speech optimization with claimed reductions of 53% in LLM cost and 39% in latency. The company promotes UNMUTE//, an open standard for describing voice agents as code, and runs compute across 15 sovereign regions with 30+ models served through one API. It holds ISO 27001 and SOC 2 Type II certifications and states HIPAA and GDPR compliance.

Industry: Artificial Intelligence
Founded: 2025
Employees: 10
Website: slng.ai

Good to know if you are moving

All three current openings (AI / Fullstack Engineer, Founding Forward Deployed Speech Engineer, Founding Speech Model Performance Engineer) are based in Barcelona on a hybrid arrangement.
SLNG is a very early-stage company: founded in 2025 with a team of 10 co-workers, and current roles carry 'Founding' titles.
Open roles sit in the Prod / Eng department, focused on speech AI and fullstack engineering.
The company operates voice AI infrastructure across 15 sovereign regions, including the European Union, India, Indonesia and Australia.

In their own words

About the company & team

Our founding team comes from the core of AI and developer tooling in the USA, with experience scaling platforms trusted by the world's best builders. Meet Luke, Founder & CEO, and Ismael, Founder & CPO at SLNG.

We're bringing that San Francisco mindset to Europe with our first hub in Barcelona, and we have the support of leading international VCs and Angels who are backing the SLNG journey.

All open roles at SLNG