Lead Software Engineer - Agentic Industrial Emissions Platform (React and Go)

Jobs in JS; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Job summary

IFS is seeking a Senior Full Stack Engineer to shape and deliver scalable, cloud-based IndustrialAI solutions. You will provide technical leadership across front-end and back-end, influence architecture, and evolve the platform into a secure, observable product portfolio.

You will work across GoLang and React, mentor engineers, and champion DevOps, testing, and performance while driving production readiness in a hybrid, global environment.

Qualifications

• Strong experience in full stack software engineering across front-end and back-end.
• Solid experience with modern front-end technologies, particularly React.
• Strong back-end engineering experience, ideally including GoLang or similar languages.
• Experience designing and building scalable APIs and cloud-native applications.
• Strong understanding of DevOps practices, including CI/CD, deployment, monitoring, and incident response.
• Experience delivering secure, observable, high-quality production software.
• Ownership mindset, with accountability from design through production.

Responsibilities

• Lead the design, architecture, and implementation of scalable APIs, services, and accessible user interfaces.
• Drive modernization of legacy systems into modular, event-driven components.
• Deliver AI-native features across front-end and back-end using multiple languages.
• Provide technical direction and trade-offs for scalability, maintainability, and performance.
• Own reliability and operational excellence, including telemetry, SLOs, and incident response.
• Champion DevOps practices, including CI/CD and deployment automation.
• Collaborate with Platform Engineers in a lean DevOps model; assume application-level DevOps.
• Mentor engineers and promote engineering best practices.
• Champion code quality, testing, performance, security, and maintainability.
• Take ownership of deliverables quality including test automation and production readiness.
• Partner with Product, Design, AI, Platform Engineering and other teams on discovery and delivery.
• Bring product- and customer-led mindset to solve pain points with scalable engineering.
• Identify risks, bottlenecks, and opportunities to improve architecture and ways of working.

Skills

Full stack engineering

React

GoLang

APIs

Cloud-native

DevOps

CI/CD

Testing

Observability

Leadership

Job description

Company Description

IFS is a billion-dollar revenue company with 7000+ employees on all continents. Our leading AI technology is the backbone of our award-winning enterprise software solutions, enabling our customers to be their best when it really matters-at the Moment of Service. Our commitment to internal AI adoption has allowed us to stay at the forefront of technological advancements, ensuring our colleagues can unlock their creativity and productivity, and our solutions are always cutting-edge.

At IFS, we're flexible, we're innovative, and we're focused not only on how we can engage with our customers but on how we can make a real change and have a worldwide impact. We help solve some of society’s greatest challenges, fostering a better future through our agility, collaboration, and trust.

We celebrate diversity and understand our responsibility to reflect the diverse world we work in. We are committed to promoting an inclusive workforce that fully represents the many different cultures, backgrounds, and viewpoints of our customers, our partners, and our communities. As a truly international company serving people from around the globe, we realize that our success is tantamount to the respect we have for those different points of view.

By joining our team, you will have the opportunity to be part of a global, diverse environment;you will be joining a winning teamwith a commitment to sustainability;and a company where we get things done so that you can make a positive impact on the world.

We're looking for innovative and original thinkers to work in an environment where you can #MakeYourMomentso that we can help others make theirs. With the power of our AI-driven solutions, we empower our team to change the status quo and make a real difference.

If you want to change the status quo, we'll help you make your moment. Join Team Purple. Join IFS.

Job Description

This role is focused on a market-leading IndustrialAI solution designed to help organizations measure, disclose, and optimize their impact on the path to decarbonization.

The solution enables customers to move beyond static sustainability reporting to operational, decision-grade intelligence embedded directly into how the business runs.

The platform delivers:

• End-to-end carbon intelligence across Scope 1, 2, and 3 emissions
• A scalable, actionable pathway for decarbonization in complex industrial environments
• Near real-time insights that enable faster, smarter operational and strategic decisions

As a Senior Full Stack Engineer, you will play a key role in shaping and delivering scalable, cloud-based IndustrialAI solutions that create meaningful outcomes for customers and the business. You will provide technical leadership across both front-end and back-end development, influence architectural decisions, and help evolve the platform into a secure, observable, high-quality product portfolio.

This role requires a strong engineering mindset, hands-on full stack capability, and the ability to work across multiple general-purpose programming languages and frameworks - including, but not limited to, GoLang and React. You will be expected to continuously learn, adapt, and guide others as technologies and product needs evolve.

While this role begins within an Industrial emissions intelligence solution, it is not confined to a single product or problem space. It is an entry point into a broader AI-driven product portfolio, with opportunities to expand across products, domains, and technologies as the platform evolves.

Core Responsibilities :

• Lead the design, architecture, and implementation of scalable APIs, services, and accessibility-first user interfaces.
• Drive the modernization of legacy systems into modular, event-driven, API-first components.
• Deliver AI-native features and improvements across both front-end and back-end, using multiple programming languages where required.
• Provide technical direction and make sound engineering trade-offs around scalability, maintainability, performance, and product impact.
• Own reliability and operational excellence, including telemetry, SLOs, error budgets, on-call rotations, incident response, and continuous service improvement.
• Champion DevOps practices, including CI/CD, deployment automation, monitoring, and application-level operations.
• Collaborate with Platform Engineers as part of a lean DevOps shared service model, while taking responsibility for application-level DevOps within the team.
• Mentor engineers, promote engineering best practices, and help raise the technical bar across the team.
• Champion code quality, documentation, automated testing, performance, security, and maintainability.
• Take full ownership of the quality of deliverables, including test automation, continuous improvement, and production readiness.
• Partner closely with Product Management, Design, AI, Platform Engineering, and other engineering teams on product discovery, technical trade-offs, and delivery.
• Bring a product- and customer-led mindset to solving customer pain points with elegant, scalable engineering solutions.
• Identify technical risks, performance bottlenecks, and opportunities to improve the platform architecture and engineering ways of working.

Qualifications

Essential :

• Strong experience in full stack software engineering, with proven capability across both front-end and back-end development.
• Solid experience with modern front-end technologies, particularly React or similar frameworks.
• Strong back-end engineering experience, ideally including GoLang or comparable general-purpose programming languages.
• Experience designing and building scalable APIs, services, and cloud-native applications.
• Strong understanding of DevOps practices, including CI/CD, deployment, monitoring, automation, and incident response.
• Experience delivering secure, observable, high-quality production software.
• Strong focus on code quality, automated testing, documentation, performance, and maintainability.
• Ability to lead technical design discussions and influence architectural decisions.
• Effective collaboration and communication skills, with the ability to work across Product, Design, Platform, and Engineering teams.
• Ownership mindset, with the ability to take accountability for outcomes from design through to production.

Desirable :

• Experience with cloud platforms such as Azure, AWS, or GCP.
• Experience with event-driven architectures, distributed systems, or microservices.
• Experience modernizing legacy systems into modular, scalable platforms.
• Experience working in cross-functional product teams.
• Experience mentoring engineers or contributing to engineering standards.
• Experience with AI-enabled, data-intensive, sustainability, carbon intelligence, or enterprise SaaS products.
• Familiarity with observability, reliability engineering, SLOs, error budgets, and production incident management.

WhatWe’reLooking For :

We are looking for a senior engineer who can combine strong hands-on engineering with technical leadership. You should be comfortable building across the stack, making architectural decisions, improving engineering practices, and influencing how products are designed, delivered, and operated.

You will be successful in this role if you enjoy solving complex customer problems, building scalable cloud-native systems, collaborating across disciplines, and helping teams deliver high-quality software that has real-world impact.

Additional Information

We embrace flexibility and hybrid work opportunities to support diverse needs and lifestyles, while also valuing inclusive workplace experiences. By fostering a sense of community, we drive innovation, strengthen connections, and nurture belonging. Our commitment ensures you can work in a way that suits you best, while also engaging with colleagues to share ideas and build meaningful relationships.