Lead Backend Engineer - Technologist

Client Server Limited; Newcastle upon Tyne; On-site; GBP 78,000 - 130,000; Full time

Benefits offered by this job

25 days holiday

Bupa healthcare

Generous pension contribution

Career development opportunities

Social team atmosphere with events &早

Relocation assistance (within the UK)

Job summary

Client Server Limited is seeking a Lead Backend Engineer in Newcastle to design and implement APIs and microservices, manage secure server environments, and guide the team with architectural leadership. You will liaise with clients, gather requirements, and shape the product roadmap while remaining hands-on with design.

The role requires broad tech experience (C#, .NET, Python, TypeScript, REST APIs) and strong communication in a consultancy context.

Qualifications

• 2.1 BSc in Computer Science or similar technical discipline from a top tier university.
• Strong software engineering experience across C#, .Net, Python, TypeScript, C++, Rust, RESTful APIs, Vue.js, React, PostgreSQL, CI/CD, Cloud (AWS, Azure, GCP), DevOps.
• Advanced communication and client relationship skills gained within a consultancy.
• Strong business acumen.
• Technologist who collaborates and solves problems.
• Good knowledge of modern software engineering practices across the full SDLC.
• Understanding of CS fundamentals (OOP, data structures, design patterns, algorithms).
• Excited to join a startup in a role you can shape and influence.

Responsibilities

• Design and implement logic behind core applications, APIs and microservices.
• Oversee configuration and upkeep of secure, reliable server environments.
• Collaborate with internal teams and clients to gather requirements and shape product roadmap.
• Lead architecture and design hands-on; conduct code reviews and mentoring.
• Help the team remove blockers and deliver high-quality software.

Skills

C#

.NET

Python

TypeScript

C++

Rust

REST APIs

Vue.js

React

PostgreSQL

CI/CD

Cloud

Education

2.1 BSc Computer Science

Tools

CI/CD

AWS

Azure

GCP

Job description

Lead Backend Engineer / Developer (Python TypeScript API) Newcastle onsite to £130k

Are you a technologist who enjoys working with a range of programming languages and liaising with clients?

You could be joining a scaling FinTech within the consulting division of the Newcastle office.

What's in it for you:

• Salary to £130k + Bonus
• 25 days holiday
• Bupa healthcare
• Generous pension contribution
• Continuous career development opportunities
• Social team atmosphere with a range of events and early finish for drinks on Fridays
• Relocation assistance (within the UK)

Your role:

As a Lead Backend Engineer you'll design and implement the logic behind core applications, build APIs and microservices that handle data processing, business rules and third‑party integrations and oversee the configuration and upkeep of secure, reliable server environments, working with a range of programming languages and technologies, dependant on the client environment.

You’ll work closely with internal teams and customers to gather detailed requirements through meetings and workshops and help shape the product vision and roadmap by offering technical insight and feasibility guidance, remaining hands‑on with architecture and design.

You will be a technical leader, instilling best practices, conducting code reviews, mentoring and collaboratively problem solving to help your team remove any blockers and delivery high quality software.

Location:

You’ll join colleagues in brand new Central Newcastle offices on a full‑time basis (Monday to Friday), working hours 0900-1800 with some flexibility. The offices are well equipped and offer fantastic views across the City and the local countryside, many employees walk or cycle in (onsite showers available!).

About you:

• You have achieved a minimum 2.1 BSc in Computer Science or similar technical discipline from a top tier / Russel Group university, backed by A's at A-level
• You have strong software engineering experience with a range of technology e.g. C#, .Net, Python, TypeScript, C++, Rust, RESTful APIs, Vue.js, React, PostgreSQL, CI/CD, Cloud (AWS, Azure, GCP), DevOps
• You have advanced communication and client relationship building skills gained within a consultancy environment
• You have strong business acumen
• You're a technologist who enjoys collaborating and problem solving
• You have a good knowledge of modern software engineering best practices across the full software development lifecycle
• You have a thorough understanding of Computer Science fundamentals such as OOP, Data Structures, Design Patterns, Algorithms
• You're excited to join a start‑up in a role that you can shape and influence