Mid-Level Software Engineer (React/ Typescript/ AWS)

Instil Software Ltd; Belfast City District; Hybrid; GBP 55,000 - 75,000; Full time

Benefits offered by this job

Discretionary annual bonus

Flexible hybrid working

Pension scheme

Job summary

Instil Software Ltd in Belfast is seeking a Mid-Level Software Engineer to help build and scale a GenAI platform on AWS. You will work on frontend with React and TypeScript while shaping backend services.

You will design scalable architectures, collaborate across teams, and contribute to secure, production-ready applications that solve real business problems. Join a team delivering enterprise-grade AI-powered solutions, with hybrid working and opportunities for growth in a well-established

Qualifications

• Experience building frontend applications with React and TypeScript.
• Experience developing backend services using Node.js and ExpressJS.
• Experience with relational databases, ideally PostgreSQL.
• Understanding of API design and integration.
• Experience deploying applications in AWS environments and with serverless architectures.

Responsibilities

• Build modern, responsive web applications using React and TypeScript.
• Design scalable frontend architectures and reusable component libraries.
• Develop and maintain backend services using ExpressJS and Node.js.
• Work with a large PostgreSQL database to design, optimise, and manage data models.
• Build and integrate APIs across frontend and backend systems.
• Develop serverless functionality using AWS Lambda.
• Design and implement storage and data workflows using Amazon S3.
• Contribute to the design and evolution of scalable cloud-native applications.
• Improve application performance, reliability, and maintainability.
• Implement monitoring, logging, and operational best practices.
• Troubleshoot issues across the full application stack.
• Apply secure coding principles and software engineering best practices.
• Collaborate with engineers, designers, product stakeholders, and AI specialists to deliver high-quality solutions.

Skills

React

TypeScript

Node.js

ExpressJS

API design

AWS cloud

Agile

Frontend architecture

Team collaboration

Tools

AWS

Lambda

S3

PostgreSQL

Job description

The Role

We're looking for a Mid-Level Software Engineer to join a team building and scaling a modern, enterprise-grade GenAI platform on AWS.

This is a full-stack engineering role with a strong frontend focus, where you'll spend much of your time building intuitive, high-quality user experiences using React and TypeScript. You'll also develop backend services using ExpressJS, work with a large PostgreSQL database, and build cloud-native capabilities using AWS services including Lambda and S3.

You'll be part of a team bringing AI-powered solutions into real-world enterprise environments, helping to build secure, scalable, and production-ready applications that solve meaningful business problems.

What You'll Be Doing

• Build modern, responsive web applications using React and TypeScript
• Design scalable frontend architectures and reusable component libraries
• Develop and maintain backend services using ExpressJS and Node.js
• Work with a large PostgreSQL database to design, optimise, and manage data models
• Build and integrate APIs across frontend and backend systems
• Develop serverless functionality using AWS Lambda
• Design and implement storage and data workflows using Amazon S3
• Contribute to the design and evolution of scalable cloud-native applications
• Improve application performance, reliability, and maintainability
• Implement monitoring, logging, and operational best practices
• Troubleshoot issues across the full application stack
• Apply secure coding principles and software engineering best practices
• Collaborate with engineers, designers, product stakeholders, and AI specialists to deliver high-quality

What We're Looking For

• Strong experience building applications with React and TypeScript
• Experience developing backend applications using Node.js and ExpressJS
• Experience working with relational databases, ideally PostgreSQL
• Understanding of API design and integration
• Experience building and deploying applications in AWS environments
• Familiarity with AWS Lambda and serverless architectures
• Experience working with object storage services such as Amazon S3
• Strong software engineering fundamentals and problem-solving skills
• Understanding of modern web application architecture and design patterns
• Experience working within Agile software delivery teams
• Strong communication and collaboration skills

Nice to Have

• Experience developing AI-enabled or data-driven applications
• Experience with AWS services beyond Lambda and S3
• Familiarity with Infrastructure as Code approaches
• Experience with CI/CD pipelines and automated deployment processes
• Experience with monitoring and observability tooling
• Understanding of cloud security principles and best practices
• Experience working in consulting or client-facing environments
• Exposure to event-driven or distributed system architectures

Please note: We offer flexible hybrid working, but candidates should be based in Northern Ireland and able to attend our Belfast office when required.

Why Join Instil?

At Instil, we believe great work starts with happy, motivated people. That’s why we’ve built a benefits package that supports your wellbeing, growth, and life outside of work, because when you thrive, so do we.

• Recognition That Matters: A discretionary annual performance bonus that rewards your impact and contribution to our success.
• Flexibility Built In: Flexible working arrangements and summer hours, because life isn’t 9 to 5, and balance matters.
• Financial Security: A highly competitive pension scheme with generous employer contributions, private healthcare, and life assurance for peace of mind.
• Health & Wellbeing: Employee Assistance Programme, mental health support, cycle-to-work scheme, and regular social events to keep our culture vibrant.
• Time to Recharge: 35 days holiday, enhanced maternity pay, and family-first policies so you can focus on what matters most.
• Learning Never Stops: From courses to certifications, we’ll invest in your development so you can keep growing and shaping what’s next.
• Community & Culture: Opportunities to volunteer, give back, and be part of initiatives that make Instil a truly inclusive and connected workplace.

Company Description

Instil has been delivering world-class software engineering and technology solutions for over 20 years, trusted by global brands to solve complex challenges and drive innovation. From modernising legacy systems to building cutting-edge applications, we help our clients navigate an ever-changing digital landscape with confidence and agility.

We’re proud to be an award-winning employer, reflecting how our people are at the heart of everything we do:

• Recognised as a Great Place to Work® for three consecutive years, and in 2024 ranked in the Top 20 Best Workplaces in the UK for medium-sized companies.
• Winner of Company of the Year at the Digital DNA Awards 2022, celebrating excellence in Northern Ireland’s tech sector.

Driven by a love for technology and a commitment to excellence, we bring together people who want to make a difference. We’ll support your journey, because your success is part of ours.

#LI-PR1 #InstilCareers