C# Developer

Themis Solutions Inc.; Manchester; Hybrid; GBP 64,000 - 86,000; Full time

Benefits offered by this job

Flexible hybrid work environment

25 days holiday + bank holidays

Private Healthcare with Life Insurance

Pension contribution

Professional development and growth

Clioversary recognition program

Job summary

Clio, a global leader in legal AI technology, seeks an experienced software engineer to tackle complex problems in our work and case management platform. You will collaborate across teams to deliver high-quality software, maintain clean code, and push for scalable, resilient systems.

Core work includes optimizing SQL queries, building event-driven workflows with Event Store, and modernizing components to .NET 8+ and Svelte.js, with containerized deployments.

Qualifications

• Strong experience with C#/.NET, including async/await, memory management, and resource handling.
• Deep knowledge of SQL Server, including query optimization, indexing, execution plans, and performance tuning.
• Solid understanding of HTML5, CSS3, Flexbox, and CSS Grid.
• 5+ years of varied software engineering experience, ideally including scalable systems.
• Experience with distributed systems, monoliths, or microservices.
• Demonstrate a keen interest in improving your craft by using AI

Responsibilities

• Writing and optimizing hand-crafted SQL queries to ensure high performance.
• Designing and implementing event-driven workflows using Event Store.
• Enhancing search and data projections with ElasticSearch.
• Modernizing components of the platform to .NET 8+ and Svelte.js, including containerized deployments.
• Automating infrastructure with Pulumi and Azure DevOps.
• Participating in architecture discussions, code reviews, and maintaining engineering best practices.

Skills

C#/.NET

Async/await

Memory management

Resource handling

SQL

HTML5/CSS3

JavaScript

Distributed systems

AI interest

Tools

ElasticSearch

Event Store

Neo4j

InfluxDB

Seq

Power BI

PetaPoco

Azure

Pulumi

Azure DevOps

Svelte.js

Job description

Clio is the global leader in legal AI technology, empowering legal professionals and law firms of every size to work smarter, faster, and more securely.

The Clio operate team builds and maintains an innovative work and case management platform used across legal, energy, telecoms, and property management sectors. Our team works on a wide variety of challenges — from large-scale data management to real-time business workflows — and thrives on collaboration and continuous learning.

Who you are

You are an experienced engineer who enjoys solving complex problems and delivering high-quality software. You value collaboration, curiosity, and learning as much as coding. You understand the importance of clean code, maintainable architecture, and system performance, and you want to work in a culture where your contributions matter and your growth is supported.

What you’ll work on:

Writing and optimizing hand-crafted SQL queries to ensure high performance.

Designing and implementing event-driven workflows using Event Store.

Enhancing search and data projections with ElasticSearch .

Modernizing components of the platform to .NET 8+ and Svelte.js , including containerized deployments.

Automating infrastructure with Pulumi and Azure DevOps .

Participating in architecture discussions, code reviews, and maintaining engineering best practices.

What you may have:

Strong experience with C#/.NET , including async/await, memory management, and resource handling.

Deep knowledge of SQL Server , including query optimization, indexing, execution plans, and performance tuning.

Solid understanding of HTML5, CSS3, Flexbox, and CSS Grid .

5+ years of varied software engineering experience, ideally including scalable systems.

Experience with distributed systems, monoliths, or microservices.

Demonstrate a keen interest in improving your craft by using AI

Serious bonus points if you have:

Exposure to ElasticSearch, Event Store, Neo4j, InfluxDB, Seq, Power BI .

Experience with micro-ORMs such as PetaPoco.

Contributions to open-source projects or personal coding projects.

Cloud infrastructure experience, especially Azure .

Strong grasp of clean code principles, OOP design, and software patterns.

What you will find here:

Compensation is one of the main components of Clio’s Total Rewards Program. We have developed a series of programs and processes to ensure we are creating fair and competitive pay practices that form the foundation of our human and high-performing culture.
Some highlights of our Total Rewards program include:

Clio offers a flexible hybrid work environment

25 days holiday + bank holidays

Private Healthcare with Life Insurance & Critical Illness cover

Pension contribution

Professional development and growth options

Clioversary recognition program with special acknowledgement at 3, 5, 7, and 10 years

Clio is the global leader in legal AI technology, empowering legal professionals and law firms of every size to work smarter, faster, and more securely.

We are transforming the legal experience for all by buttering the lives of legal professionals while increasing access to justice.

Summary:

What your team does

The Clio operate team builds and maintains an innovative work and case management platform used across legal, energy, telecoms, and property management sectors. Our team works on a wide variety of challenges — from large-scale data management to real-time business workflows — and thrives on collaboration and continuous learning.

Who you are

You are an experienced engineer who enjoys solving complex problems and delivering high-quality software. You value collaboration, curiosity, and learning as much as coding. You understand the importance of clean code, maintainable architecture, and system performance, and you want to work in a culture where your contributions matter and your growth is supported.

What you’ll work on:

• Developing full-stack features using C#, .NET, HTML, CSS, JavaScript, and SQL .
  

• Writing and optimizing hand-crafted SQL queries to ensure high performance.
  

• Designing and implementing event-driven workflows using Event Store.
  

• Enhancing search and data projections with ElasticSearch .
  

• Modernizing components of the platform to .NET 8+ and Svelte.js , including containerized deployments.
  

• Automating infrastructure with Pulumi and Azure DevOps .
  

• Participating in architecture discussions, code reviews, and maintaining engineering best practices.
  

What you may have:

• Strong experience with C#/.NET , including async/await, memory management, and resource handling.
  

• Deep knowledge of SQL Server , including query optimization, indexing, execution plans, and performance tuning.
  

• Solid understanding of HTML5, CSS3, Flexbox, and CSS Grid .
  

• 5+ years of varied software engineering experience, ideally including scalable systems.
  

• Experience with distributed systems, monoliths, or microservices.

• Demonstrate a keen interest in improving your craft by using AI

Serious bonus points if you have:

• Exposure to ElasticSearch, Event Store, Neo4j, InfluxDB, Seq, Power BI .
  

• Experience with micro-ORMs such as PetaPoco.
  

• Contributions to open-source projects or personal coding projects.
  

• Cloud infrastructure experience, especially Azure .
  

• Strong grasp of clean code principles, OOP design, and software patterns.
  

What you will find here:

Compensation is one of the main components of Clio’s Total Rewards Program. We have developed a series of programs and processes to ensure we are creating fair and competitive pay practices that form the foundation of our human and high-performing culture.
Some highlights of our Total Rewards program include:

• Competitive, equitable salary

• Clio offers a flexible hybrid work environment

• 25 days holiday + bank holidays

• Private Healthcare with Life Insurance & Critical Illness cover

• Pension contribution

• Professional development and growth options

• Clioversary recognition program with special acknowledgement at 3, 5, 7, and 10 years

The expected salary range for this role is £63,800 to £86,200 GBP. Initial placement within the range is informed by geographic region, experience, and skillset, with room to progress as impact and tenure grow. Final offer amounts will vary based on candidate profile.

Diversity, Inclusion, Belonging and Equity (DIBE) & Accessibility

Our team shows up as their authentic selves, and are united by our mission. We are dedicated todiversity, equity and inclusion . We pride ourselves in building and fostering an environment where our teams feel included, valued, and enabled to do the best work of their careers, wherever they choose to log in from. We believe that different perspectives, skills, backgrounds, and experiences result in higher-performing teams and better innovation. We are committed to equal employment and we encourage candidates from all backgrounds to apply.

Clio provides accessibility accommodations during the recruitment process. Should you require any accommodation, please let us know and we will work with you to meet your needs.

Learn more about our culture at clio.com/careers

We're a Human and High Performing AI company, meaning we use artificial intelligence to improve all of our operations. In recruitment, AI helps us streamline the process for greater efficiency. However, we've built our systems to ensure that a human always reviews AI-generated output, and we never make automated hiring decisions.

Disclaimer: We only communicate with candidates through official @clio.com email addresses.

In-house performance coach, Katie, helps Clions accelerate their career development.

At Clio, we’re creating a human and high performing culture. That means you’ll be encouraged and supported to do your best work. Find out what keeps us grounded. Learn more.

Every day I am surrounded by a group that keeps me laughing, but also inspires me with their hard work and ingenuity. Everyone here goes out of their way to help each other learn and grow.