# Fullstack Software Engineer at MLabs

> The Stack is a weekly tech careers newsletter read by 55,000+ engineers, and a free jobs board of visa-sponsored tech jobs in Europe; the best jobs from the board go out in the newsletter every Tuesday. This is one job from the board.

> Responsibilities: - Own end-to-end system design and deliver

- **Company:** MLabs (https://jobs.trythestack.co/companies/mlabs)
- **Location:** United Kingdom
- **Work arrangement:** On-site
- **Employment type:** Full-time
- **Experience level:** 5–10 years
- **Visa sponsorship:** Offered, according to the listing
- **Key skills:** TypeScript, React, Next.js, AWS, OpenSearch, Trigger.dev, ClickHouse, Datadog, System Design, AI Agents, RAG Systems, Web Scraping, Data Pipelines, Full-stack Development, LLM Tooling, Algorithms
- **Posted by employer:** 2026-07-14
- **Added to The Stack:** 2026-07-14
- **Status:** May no longer be active (posted more than 60 days ago)
- **Apply:** https://jobs.workable.com/view/kR5esj2ofFrMqBg2qYrhvu/fullstack-software-engineer-in-london-at-mlabs (the employer's own application page)
- **Human page:** https://jobs.trythestack.co/jobs/fullstack-software-engineer-mlabs

## About the role

Responsibilities:
- Own end-to-end system design and delivery: scope, implement, test and deploy production features that drive revenue.
- Build and scale autonomous AI calling/dialer infrastructure and high-throughput AI Inbound SDR workflows.
- Implement closed-loop intelligence: post-interaction insights, proposals and targeting signals feeding campaigns.
- Design and operate high-scale data pipelines: web scraping, AI-driven qualification and optimized list-logic.
- Work across the full stack using TypeScript, React (Next.js), AWS, OpenSearch, ClickHouse and observability tooling.
- Collaborate closely with product and cross-functional teammates in a fast-paced, on-site engineering environment.

Requirements:
- Proven experience at a top-tier tech company or equivalent high-performance environment (FAANG or similar) is required.
- 3+ years professional experience for mid-level, 6+ years for senior candidates; startup experience and adaptability preferred.
- Deep expertise in TypeScript and React (Next.js) and strong CS fundamentals (data structures, algorithms, performance).
- Practical experience with LLMs, autonomous agents or RAG systems and building data-driven production features.
- Strong ownership, ability to ship rapidly, debug complex systems and work on-site full time.

## Responsibilities

Own the end-to-end development of foundational systems, including autonomous AI workflows and high-scale data pipelines. Build and scale custom calling infrastructure and post-interaction intelligence layers to drive business revenue.

## Requirements

Requires 3-6+ years of experience at top-tier tech firms or agile startups and a Computer Science degree from a top university. Must have deep proficiency in TypeScript, React, and practical experience building with LLMs and autonomous agents.

## FAQ

- **Is this Fullstack Software Engineer role still open?** It was posted on 2026-07-14. Listings more than 30 days old may no longer be active, so check MLabs's site before applying.
- **Does MLabs offer visa sponsorship?** This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on MLabs's site.
- **Where is this role located?** The listing gives the location as United Kingdom. It is marked on-site.
- **What skills does this role ask for?** The listing names: TypeScript, React, Next.js, AWS, OpenSearch, Trigger.dev, ClickHouse, Datadog, System Design, AI Agents, RAG Systems, Web Scraping, Data Pipelines, Full-stack Development, LLM Tooling, Algorithms.

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## About The Stack

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