Senior Software Engineer II

Talent Octopusventures; City Of London; On-site; GBP 90,000 - 130,000; Full time

Job summary

LexisNexis Risk Solutions is seeking a Senior Software Engineer II in London to design, develop, and maintain software that drives risk assessment and customer experience improvements. You will work in cross-functional teams, mentoring juniors and contributing to projects with real user impact.

You will apply modern software practices, from RAG pipelines to LangChain-based orchestration, leveraging Python, .NET, and cloud-native solutions.

Qualifications

• Experience with Agile/Scrum methodologies and leading teams.
• Proficiency in Python and hands-on experience with AI tools and LLM APIs.
• Understanding of OOP concepts in .Net and practical integration.
• Experience with RAG pipelines, embeddings, and vector stores.
• Familiarity with Lang Chain or similar orchestration patterns.
• Deep expertise in SQL Server and performance troubleshooting.
• Experience with AWS cloud services and cloud-native apps.

Responsibilities

• Develop, maintain, and enhance software in cross-functional teams.
• Investigate and resolve customer and colleague-reported issues.
• Share knowledge and mentor junior engineers.
• Assist with project planning and effort estimation.
• Support other teams and contribute to ongoing improvements.
• Communicate effectively with diverse colleagues.

Skills

Agile/Scrum

Python

LLM APIs

OOP .NET

RAG pipelines

LangChain

SQL Server

AWS

JavaScript/TypeScript

Security engineering

Communication

Tools

LangChain

LLM APIs

Job description

Senior Software Engineer II

Do you enjoy working as part of a team that supports a diverse range of products and technologies?

Do you enjoy mentoring and supporting junior colleagues?

About the Business

LexisNexis Risk Solutions is a trusted partner in risk assessment. Within our Business Services vertical, we provide a wide range of solutions that help organizations drive revenue growth, improve operational efficiency, and enhance customer experiences. Our offerings address complex challenges across Anti-Money Laundering and Counter Terrorist Financing, Identity Authentication and Verification, Fraud and Credit Risk Mitigation, and Customer Data Management. Learn more about LexisNexis Risk Solutions: https://risk.lexisnexis.com/

About Our Team

We deliver powerful digital solutions that help customers tackle some of the world’s most significant challenges. Our Software Engineering team develops innovative, customer-focused products that create meaningful value and impact.

About the Role

As a Senior Software Engineer II, you will help design, develop, and maintain software solutions that have a real impact. You will work in cross-functional teams, share knowledge, and contribute to projects that make a difference for our users. Your input will help drive innovation and improve our products.

Responsibilities

• Develop, maintain, and enhance software solutions as part of a collaborative team.
• Investigate and resolve issues reported by customers and colleagues.
• Participate in knowledge-sharing initiatives and contribute to a supportive team environment.
• Assist with project planning and effort estimation for upcoming work.
• Support other teams as needed and contribute to ongoing improvements.
• Communicate effectively and collaborate with colleagues from diverse backgrounds.

Requirements

• Strong understanding of modern software development methodologies, including Agile and Scrum, with the ability to diagnose and resolve complex technical issues while guiding others through problem-solving.
• Proficiency in Python and must have direct experience with AI tools like LLM APIs (OpenAI, Bedrock, or Azure OpenAI). Understanding of OOPS concepts (.Net).
• Work experience in RAG pipelines: chunking, embeddings, vector stores, retrieval quality, Structured extraction with Pydantic or similar schema-driven approaches, Agentic patterns and orchestration (Lang Graph, Lang Chain, or hand-rolled equivalents; framework matters less than understanding the patterns), Prompt engineering and some awareness of evals/testing LLM outputs.
• Deep expertise in Microsoft SQL Server, including schema design, performance optimization, stored procedures, and advanced troubleshooting.
• Experience in application design, root cause analysis, and the development of shared or reusable components.
• Strong written and verbal communication skills.
• Hands-on experience with AWS cloud services and cloud-native application development.
• Understanding of security engineering principles and their practical application and Knowledge of JavaScript frameworks and TypeScript/node.js is a plus.

Our Commitment to Inclusion

We welcome applications from individuals of all backgrounds, including underrepresented groups, people with disabilities, career changers, and candidates with non-traditional education or experience. If you require accommodations at any stage of the recruitment process, please let us know. We are committed to supporting your success.

Learn more about the LexisNexis Risk Solutions team and how we work.

We know your well-being and happiness are key to a long and successful career. We are delighted to offer country specific benefits.

We are committed to providing a fair and accessible hiring process. If you have a disability or other need that requires accommodation or adjustment, please let us know by completing our Applicant Request Support Form or please contact 1-855-833-5120.

We are an equal opportunity employer: qualified applicants are considered for and treated during employment without regard to race, color, creed, religion, sex, national origin, citizenship status, disability status, protected veteran status, age, marital status, sexual orientation, gender identity, genetic information, or any other characteristic protected by law.

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