Senior Software Engineer

Understanding Recruitment; London; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

A leading tech recruitment firm is seeking a Senior Software Engineer for their Kotlin Team in London. This role involves building scalable systems, shaping architecture, and delivering impactful features within a growing AI infrastructure company. Candidates should have Kotlin experience and thrive in a dynamic, product-led setting. Flexible working hours and a hybrid model are offered.

Qualifications

• Prior Kotlin experience needed; expertise not necessary.
• Enjoys ownership and solving meaningful problems.
• Thrives in fast-moving environments.

Responsibilities

• Build scalable, performant systems in Kotlin.
• Shape architecture and technical direction.
• Work closely with the product team for feature delivery.
• Define a modern engineering culture promoting autonomy.

Skills

Kotlin

Problem-solving

Collaboration

Tools

Spring Boot

AWS

GCP

Hadoop

Spark

Job description

Overview

Senior Software Engineer – Kotlin Team | Build the Future of AI-Driven Testing

Hybrid – 2 days/week in Central London (with flexible working hours)

Are you a Kotlin engineer (or JVM dev keen to upskill) who thrives in fast-moving, product-led environments? Join a rising AI infrastructure company that’s transforming how teams generate and test high-quality data. Their API-driven platform helps dev and QA teams ship faster, stay compliant, and eliminate manual work – and they’ve just secured Series A funding to scale!

Responsibilities

• Build scalable, performant systems in Kotlin
• Shape architecture and technical direction as the platform grows
• Work closely with product to deliver high-impact features
• Help define a modern engineering culture with autonomy and ambition

Stack: Kotlin, Spring Boot, Hadoop/Spark, AWS/GCP, microservices, CI/CD

Prior Kotlin experience needed – but you don’t need to be an expert!

If you enjoy ownership, solving meaningful problems and building real products in an early-stage environment – this is your place.

Seniority level

• Mid-Senior level

Employment type

• Full-time

Job function

• Information Technology and Engineering

Industries

• Software Development