Software Engineer - BE

Signal AI; City Of London; On-site; GBP 50,000 - 80,000; Full time

Job summary

A leading AI technology firm in London is looking for a Software Engineer to build AI-powered solutions. In this role, you'll develop features from conception to production, optimize data processing systems, and collaborate with cross-functional teams to deliver customer value. Ideal candidates should have expertise in languages such as Clojure, Python, and experience with cloud platforms. You'll thrive in a culture that values collaboration, continuous improvement, and innovation.

Qualifications

• Experience with API design and integration.
• Understanding of distributed systems concepts.
• Proficiency in debugging complex issues.

Responsibilities

• Contribute to features from conception to production.
• Design and implement performant and secure APIs.
• Optimize database queries for large volumes of data.

Skills

Clojure

Python

DBT

Typescript

React

Tools

ElasticSearch

PostgreSQL

S3

DynamoDB

Redis

AWS

Git

Job description

We're on a mission to change the way businesses make decisions with our cutting-edge AI technology. To achieve that, we’re looking for passionate people to join our open and unconventional workplace. Our inclusive environment welcomes skills and experiences from diverse backgrounds, and defines who we are.

About Signal AI

Signal AI is the External Intelligence company helping business leaders make sense of the outside world. Our platform transforms external data from traditional news and social media across 226 markets and 75 languages, providing companies with actionable insights designed to navigate enterprise risk, strengthen reputation, and fuel growth.

Our platform ingests diverse content from 5.4M+ documents and posts per day from more than 220,000 sources across published media, social media, podcasts, broadcast, and regulatory content. Our proprietary AI engine, AIQ, processes this vast amount of unstructured data in near real-time, turning it into actionable intelligence, enabling strategic and bold decision-making.

Our unique approach, underpinned by a blend of generative and discriminative technologies, ensures businesses receive data-driven insights that are both actionable and rigorously factual, setting a new benchmark for AI's role in strategic decision-making.

The Role

We're seeking a Software Engineer to join our growing engineering team and help us continue building world-class AI-powered solutions at scale. As a solid individual contributor, you'll work on complex features that directly impact how global enterprises understand and respond to their external environment.

The Team

The Data Ingestion team's mission is to ingest this content in a reliable and compliant way. A key part of the ingestion process is normalising that content so the broader Signal AI ecosystem can consume it. The Data Ingestion team is also responsible for a suite of products that help customers (and customer support) get maximum value from the content we ingest.

This team requires somebody with a product mindset who is comfortable solving complex issues end-to-end in a highly collaborative environment. The Team’s remit is especially broad - it spans low-level data processing systems to customer‑facing tools.

What You'll Be Doing

Delivering Impact Through Quality Software

• Contributing towards features, while guiding them from conception to production, ensuring they meet our high standards for quality, reliability, and performance

• Writing clean, readable, and maintainable code that can be easily understood and extended by your teammates and your future self

• Building robust observability into your solutions through comprehensive logging, tracing, and metrics that enable rapid issue diagnosis and root cause identification

• Contributing to the breakdown of complex problems into manageable, deliverable tasks

Building at Scale

• Working with services that process millions of documents daily across hundreds of markets and languages

• Designing and implementing APIs that are performant, secure, and developer‑friendly

• Optimising database queries and data models for systems handling large volumes of real‑time data

• Understanding distributed systems principles to build resilient, scalable solutions

• Building and evolving services that can cope with large volumes of disparate data

Collaborating to Build Better Solutions

• Working closely with cross‑functional teams, including product managers, designers, and other engineers, to deliver customer value

• Maintaining a product engineering mindset and being comfortable discussing the tradeoffs between one approach and another while keeping our users front and centre

• Participating actively in team ceremonies and contributing to our culture of continuous improvement

• Pair programming with team members to share knowledge and deliver high‑quality solutions

• Clearly articulating technical concepts to both technical and non‑technical stakeholders

• Participating in product and engineering forums, committed to maintaining high standards and sharing knowledge across the wider Product & Technology (P&T) group

Embracing Modern Development Practices

• Staying current with emerging AI‑assisted development tools and practices

• Contributing to team discussions on how to effectively integrate AI tools into our Software Development Life Cycle (SDLC)

• Maintaining a balance between AI assistance and critical thinking to ensure code quality and security

What We're Looking For

Technical Skills

• Working with varied technologies and languages, such as Clojure, Python, DBT, Typescript, React, etc.

• Experience with API design and integration, including RESTful services

• Comfortable using different databases (relational and non‑relational) and storage systems, such as ElasticSearch, PostgreSQL, S3, DynamoDB, Redis, etc.

• Understanding of distributed systems concepts and microservices architecture

• Experience with cloud platforms (AWS) and infrastructure‑as‑code

• Proficiency in debugging complex issues and performance optimisation

• Security‑aware development practices and understanding of common vulnerabilities

• Willingness to work across the stack, comfortable with both backend services and frontend interfaces

Development Practices

• Strong focus on observability and explainability over extensive unit testing

• Experience implementing comprehensive monitoring, alerting, and logging strategies

• Understanding of DevOps practices, including CI/CD pipelines and deployment strategies

• Excellent documentation skills for both technical and user‑facing content

• Experience with version control (Git) and collaborative development workflows

Approach & Mindset

• Strong ownership mentality – you take responsibility for the quality and timely delivery of your work, but also hold yourself accountable for resolving issues that arise in production systems

• Pragmatic approach to testing and quality – focusing on observability and real‑world impact

• Resilience and persistence when tackling challenging problems

• Proactive communication style – you share progress, blockers, and insights without being prompted

• Growth mindset – you actively seek feedback and continuously improve your skills

• Customer focus – you understand that our success comes from delivering value to our users

Why This Role is Exciting

• Massive Scale: Process and analyse data from 5.4M+ documents daily across 226 markets in 75 languages

• Global Impact: Your work directly affects how Fortune 500 companies manage risk and reputation

• Technical Excellence: Join a team that values clean code, robust systems, and thoughtful design

• Innovation Culture: Be at the forefront of integrating Generative AI into the software development lifecycle

• Career Growth: Clear progression framework with opportunities to develop into senior technical or leadership roles

The Signal AI Way

We want to be transparent about what makes someone successful here:

• We thrive on collaboration – We believe the best solutions come from working together. Pair programming is part of our DNA, not an occasional practice. If you prefer collaborative problem‑solving and learning from others over solo work, you’ll feel right at home.

• We embrace change – In a fast‑growing scale‑up processing millions of documents daily, priorities can shift as we respond to market opportunities. We see this as exciting rather than frustrating, and we’re looking for engineers who can adapt with agility.

• We focus on impact – We care about delivering value to customers efficiently. We prioritise observability and monitoring over exhaustive testing, believing that understanding how our systems behave in production is more valuable than perfect test coverage. If you’re open to experimenting with different methodologies, this role offers a great opportunity to broaden your horizons.

• We leverage AI – We’re not just building AI products; we’re using AI to build better. We expect our engineers to actively explore and adopt AI tools that make them more productive.

• We own our systems – When something goes wrong in production, we don’t point fingers. We fix it, learn from it, and improve our observability to catch it earlier next time.

If these aspects align with your professional values and aspirations, we believe you’ll find a rewarding career with us at Signal AI.

Ready to Join Us?

If you’re excited about building technology that transforms how organisations understand and respond to the world around them, we’d love to hear from you.

Not sure you meet every requirement? Studies show that women and other underrepresented groups often hesitate to apply unless they check every box. At Signal AI, diverse perspectives strengthen our teams, drive innovation, and lead to better performance. So even if your background doesn’t align perfectly with each qualification, we encourage you to apply if you’re passionate about this role.

We’re dedicated to creating an inclusive environment where every Signaller feels welcomed, valued, and heard—a place where you can truly thrive as yourself.