Senior Full-Stack Engineer - Sustainable AI Platform, Hybrid

IFS; Greater London; Hybrid; GBP 90,000 - 125,000; Full time

Job summary

IFS is seeking a senior software engineer to design, build, and own scalable cloud-native systems. You will work across the stack, shaping API-first architectures and AI-enabled features that drive sustainability initiatives and ESG data capabilities.

You will lead technical discussions, mentor engineers, and partner with Product, Design, AI, and Platform teams to deliver high-quality software with reliability, observability, and strong security. Hybrid work options available.

Qualifications

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

Responsibilities

• Lead the design, architecture, and implementation of scalable APIs, services, and accessibility-first user interfaces
• Deliver AI-native features across both front-end and back-end, spanning carbon accounting, ESG data collection, and sustainability planning capabilities
• Drive the evolution of the platform into modular, event-driven, API-first components
• 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

Skills

Full stack

React

GoLang

API design

DevOps

CI/CD

Test automation

Observability

Tech leadership

Tools

Azure

AWS

GCP

PostgreSQL

Job description

IFS is seeking a senior software engineer to design, build, and own scalable cloud-native systems. You will work across the stack, shaping API-first architectures and AI-enabled features that drive sustainability initiatives and ESG data capabilities.

You will lead technical discussions, mentor engineers, and partner with Product, Design, AI, and Platform teams to deliver high-quality software with reliability, observability, and strong security. Hybrid work options available.