Full Stack Software Engineer

Holt Executive Ltd; Greater London; On-site; GBP 65,000 - 90,000; Full time

Job summary

Holt Executive Ltd. is seeking a hands-on Full Stack Software Engineer to design, develop and enhance data-driven applications and cloud platforms.

You will work across backend services, APIs and frontend interfaces, applying Python and TypeScript in a cloud-centric stack. The role involves building AI-enabled features, integrating with data pipelines, and contributing to scalable, reliable production platforms within a collaborative team.

Qualifications

• Strong Python development experience in production applications.
• Experience with AWS services including Lambda, ECS/Fargate, S3 and API Gateway.
• Experience deploying and managing containerised applications with Docker.
• Good SQL skills and experience with data warehouses.
• Hands-on IaC experience, particularly Terraform.
• Proficiency with Git and modern CI/CD workflows.
• Experience contributing to multi-component software systems.
• Interest in AI-assisted development tools and AI-enabled features.

Responsibilities

• Design, develop and maintain full-stack applications across backend, APIs and frontends.
• Build production software using Python, TypeScript and modern web technologies.
• Develop cloud-based applications and services on AWS.
• Integrate applications with data pipelines and external services.
• Build AI-powered features including LLM integrations and tool orchestration.
• Contribute to architectural decisions and evaluate frameworks.
• Develop proofs-of-concept to evaluate new technologies.
• Investigate production issues and optimise performance and reliability.
• Collaborate with engineering, product, data and business stakeholders.

Skills

Python

AWS

Docker

SQL

Git

CI/CD

Terraform

AI/LLMs

Cross-functional

Tools

Lambda

ECS/Fargate

S3

API Gateway

Next.js/TypeScript

GCP

Job description

A global technology organisation is looking for a Full Stack Software Engineer to develop and enhance a range of data-driven applications, cloud platforms and intelligent software tools.

This is a hands-on, full-stack engineering role combining backend development, cloud infrastructure, web technologies and emerging AI capabilities. You'll help build applications that improve business processes, support decision-making and deliver better user experiences across a range of teams.

Working within a small, collaborative engineering team, you'll contribute to technical design decisions, develop new features and help evolve existing applications into scalable, reliable production platforms. The role offers exposure to a broad technology stack and the opportunity to work on practical AI integrations alongside established software engineering projects.

Key Responsibilities

• Design, develop and maintain applications across the full stack, from backend services and APIs to user-facing interfaces.
• Build production software using Python, TypeScript and modern web technologies.
• Develop cloud-based applications and services using AWS and other cloud platforms.
• Integrate applications with data pipelines, enterprise systems and external services.
• Build AI-powered features, including LLM integrations, prompt orchestration and tools that connect AI agents with data and services.
• Contribute to architectural and technical decisions, evaluating frameworks, tools and implementation approaches.
• Develop proof-of-concepts to assess new technologies and demonstrate potential solutions.
• Investigate and resolve production issues, optimise application performance and improve software reliability.
• Design efficient data processing and integration patterns for applications handling large datasets.
• Implement authentication and authorisation mechanisms for secure enterprise applications.
• Support infrastructure deployment, Infrastructure as Code and CI/CD pipeline development.
• Collaborate with engineering, product, data and business stakeholders to define requirements and deliver new features.
• Help scale successful applications into robust, maintainable platforms suitable for wider adoption.

Essential Requirements

• Strong Python development experience, including building production applications.
• Practical experience with AWS services such as Lambda, ECS/Fargate, S3 and API Gateway.
• Experience deploying and managing containerised applications using Docker.
• Good SQL skills and experience working with data warehouses.
• Hands-on experience with Infrastructure as Code, particularly Terraform.
• Proficiency with Git and modern CI/CD workflows.
• Experience contributing to the design and implementation of multi-component software systems.
• An interest in using AI-assisted development tools and building AI-enabled software features.
• Strong problem-solving skills and the ability to collaborate effectively within a cross-functional team.

Desirable Experience

• Modern web development frameworks, particularly Next.js, React and TypeScript.
• Google Cloud Platform services, especially BigQuery.
• Enterprise authentication and authorisation, including SSO, SAML, OAuth and role-based access control.
• Developing and optimising applications that process high volumes of data.
• Experience with B2B SaaS platforms, CRM systems or business productivity tools.
• Designing and automating ETL and data integration pipelines at scale.
• Supporting the evolution of early-stage applications into enterprise-grade platforms.
• Agile development methodologies and tools such as Jira.
• Full-stack development spanning infrastructure, backend services and frontend interfaces.
• Understanding how technical decisions influence business outcomes, usability and user adoption.
• Automated document generation or data visualisation libraries.
• Building applications with LLMs and AI APIs.
• Familiarity with AI orchestration, retrieval-augmented generation (RAG), or agent and tool frameworks such as the Model Context Protocol (MCP).

The Opportunity

This role is ideal for a Software Engineer who enjoys working across the full development lifecycle and wants to broaden their experience across cloud technologies, data-driven applications and AI-enabled solutions.

You'll join a collaborative engineering environment where you can contribute ideas, take ownership of development work and help deliver scalable software with tangible business value.

TT