Senior Software Engineer (C# .NET) | London

TransPerfect; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

TransPerfect seeks a Senior Software Engineer to join the TechOps team in London. You will own the quality, development, and execution of software products, collaborating across product, QA, and design to deliver scalable backend services.

Responsibilities include building robust .NET/C# APIs, optimizing performance and security, mentoring junior engineers, and staying current with industry trends. Strong communication and agile practices are essential.

Qualifications

• 8+ years of software development experience building scalable systems.
• Extensive knowledge of DotNet C#, LINQ, MS SQL, Entity Framework.
• Experience with REST APIs, agile methodologies, and security best practices.
• Familiarity with cloud platforms (Azure/AWS).
• Strong communication and collaboration skills.

Responsibilities

• Engage in all phases of application development with security emphasis.
• Design, build, and maintain scalable backend code and APIs.
• Collaborate with cross-functional teams to translate requirements into technical solutions.
• Integrate frontend with server-side logic and optimize performance.
• Identify bottlenecks, bugs, and security risks; propose fixes.
• Mentor junior engineers and contribute to code quality and best practices.
• Develop automation tests and support regression testing.
• Document procedures and stay updated on industry trends.

Skills

DotNet C#

LINQ

MS SQL

Entity Framework

GIT

SOLID principles

Clean code practices

REST API

Agile methodologies

Docker

Azure

AWS

RabbitMQ

Quartz

NoSQL databases

SQL Server

Education

Bachelor's or Master's degree in computer science, engineering, or related field

Tools

Docker

Job description

We're looking for a Software Engineer to join our global team to be responsible for the quality, development, and execution of our software products.

You will be part of a technology department that is comprised of a successful and multidisciplinary group of professionals located across the globe - Barcelona, New York, London, Manchester, Bucharest and India. If you're ready to join a growing company and make an immediate impact, we want to hear from you!

You will be joining at TransPerfect - TechOps:

The TransPerfect TechOps team has been a vital part of the company's success since its formation over 10 years ago - delivering technology and services that have drastically simplified the lives of our clients and colleagues - from workflow improvements for colleagues to core services that form the basis of the company's GlobalLink platform, to creating scalable client interfaces that allow novice users to navigate complex ecosystems.

Your responsibilities and tasks will include:

• Engage in all phases of application development, with a focus on coding and debugging in alignment with security standards throughout the entire lifecycle
• Design, build, and maintain efficient, reusable, and reliable code/APIs to support applications both for web and mobile
• Collaborate regularly in a cross-functional team made up of product managers, quality assurance teams, designers and other developers to translate business requirements into technical solutions
• Collaborate with Front-end developers to integrate user-facing elements with server-side logic
• Identify bottlenecks and bugs, and devise solutions to mitigate and address issues
• Optimize web applications for performance, scalability and security
• Implement security best practices to safeguard sensitive data and protect against potential threats
• Develop automation tests/ collaborate with automation engineers to ensure business needs are met, and allow for regression testing
• Work closely with users to provide personalized software support as needed
• Stay updated on emerging technologies and industry trends to continuously improve our backend infrastructure
• Document application support and operational procedures
• Mentor junior engineers and provide technical guidance to foster their growth and development

The minimum we're looking for (show us what you got if you aren't a perfect fit):

• Bachelor's or Master's degree in computer science, engineering, or related field
• 8+ years of experience in software development, with a focus on building scalable and reliable systems
• Extensive knowledge of DotNet C#, LINQ, MS SQL, Entity Framework and related technologies
• Capable to use version control software such as GIT
• Knowledge of SOLID principles
• Knowledge of clean code practices
• Experience using web service protocols such as Rest, API design for extensibility and integration
• Experience debugging complex applications
• Experience with Agile development project management methodologies
• Database Development in SQL Server or NoSQL Databases
• Some familiarity of Docker
• Experience debugging complex applications
• Excellent communication and collaboration skills with a proven ability to work effectively in a team environment
• Azure, AWS, RabbitMQ and Quartz experience is a plus