Senior Backend Engineer (Typescript)

Overview

Senior backend engineer building AI-driven conversation platform in Dublin.

Key Responsibilities

• backend systems
• data processing
• pipeline development
• infrastructure design

Tasks

Your work will power the backend systems that process large volumes of messy, unstructured conversational data, shape the pipelines behind it, and design the infrastructure that makes the entire product possible.

Requirements

• typescript
• node.js
• aws
• postgres
• ai/llm
• builder mindset

What You Bring

A builder's mindset - you enjoy figuring things out when the answer isn't obvious If you're coming from Python, Go, Java, C#, etc. - no issue. Strong fundamentals matter more than matching their stack. Rough split: * 80% deep engineering - scaling services, designing clean systems, building out the core platform * 20% AI/LLM integration - learning-on-the-job how to design workflows, embeddings, evaluation loops, and orchestration patterns They've created a system that can understand real conversations happening across a business - calls, meetings, messages - and extract the real meaning and context behind them. you can influence architecture from day one, Strong backend or full-stack engineering experience Solid fundamentals: architecture, performance, testing, good reasoning you learn AI in a real engineering environment, Someone who builds clean, scalable systems You don't need to be an AI expert today - but you'll gain genuine, hands-on experience building these systems properly, not just "calling APIs". Curiosity about AI and how modern systems integrate it prefer moving quickly in small, highly capable teams Experience with distributed systems or high-scale environments is a plus Backend: TypeScript, Node.js, gRPC, REST Data: Postgres, Drizzle ORM Infra: AWS, containerised services, performance + observability tooling AI Layer: Python, LLM workflows, retrieval, embeddings, evaluation frameworks enjoy owning systems end-to-end -A builder's mindset - you enjoy figuring things out when the answer isn't obvious -you can influence architecture from day one, -Strong backend or full-stack engineering experience -Solid fundamentals: architecture, performance, testing, good reasoning -you learn AI in a real engineering environment, -Someone who builds clean, scalable systems -Curiosity about AI and how modern systems integrate it -prefer moving quickly in small, highly capable teams -Experience with distributed systems or high-scale environments is a plus -enjoy owning systems end-to-end

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Benefits

Up to €130,000 + Meaningful Founder-Level Equity** On-site team, 5 days - they move fast, build together, and make decisions in real time Two-stage interview process - no take-homes, no drawn-out loops Hiring in the next 1-2 weeks -On-site team, 5 days - they move fast, build together, and make decisions in real time -Two-stage interview process - no take-homes, no drawn-out loops -Hiring in the next 1-2 weeks

About Mcs Group Consultancy

-Grew from a small start‑up into a global recruitment partner, expanding across the UK, Ireland, US and Europe. -Handles a diverse portfolio of projects—from sourcing top IT talent to engineering and finance specialists for multinational firms. -Focuses on technical & engineering, IT & digital, accountancy & financial services, sales & marketing, and HR & legal sectors. -Operates a boutique, founder‑led model that adapts to client needs with agility and deep industry insight. -Delivers tailored recruitment solutions for sectors like software development, engineering, finance and corporate services. -Known for a reputation built on personalized service, hands‑on leadership and a willingness to tackle tough talent challenges. -Unusual for a recruitment firm, it maintains a strong ethical stance, often directly mentoring candidates and clients alike. -Regularly pioneers new recruitment approaches, blending traditional headhunting with consultative strategy and regional expertise. -Continues to carve a niche by balancing ambitious growth with a personalised, relationship‑driven approach.

Sector Specialisms

Interview Process

-two-stage interview process, no take‑home assignments or drawn‑out loops