Client Portfolio Manager

Aspire Systems; Cardiff; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

Aspire Systems is seeking an experienced Client Delivery Team Leader in Cardiff. This pivotal role combines client leadership, commercial accountability, and delivery excellence, ensuring high-quality outcomes while building long-term client relationships.

The successful candidate will manage client portfolios, driving growth and maintaining performance standards. Working hybrid, you'll balance time between home and our Cardiff office, fostering team collaboration.

Qualifications

• Proven track record in senior delivery or client services roles.
• Strong leadership skills to guide teams and projects.
• Ability to manage client relationships effectively.

Responsibilities

• Lead one of our high-performing software delivery teams.
• Drive growth across existing client accounts.
• Maintain oversight of revenue and margin.

Skills

Client leadership

Commercial accountability

Team leadership

Delivery excellence

Job description

Location: Hybrid (local to Cardiff an advantage)

Role Overview

Aspire Systems is a global technology services firm that partners with organisations to build future-ready digital capabilities. Founded in 1996, the company combines deep software engineering expertise with a customer-first approach.

We are seeking an experienced Client Delivery Team Leader to lead one of our high-performing software delivery teams. This role combines client leadership, commercial accountability, delivery excellence and people leadership — ensuring Aspire continues to deliver high-quality outcomes while building long-term client value.

It will suit a candidate with a strong track record in senior delivery, client services or consulting leadership roles, with the credibility to lead clients, support teams and contribute to commercial growth.

Why this role matters

This is a pivotal role in strengthening client relationships, sustaining delivery quality and supporting the continued growth of Aspire Systems in the UK. The successful candidate will play a key part in expanding our client base, strengthening team performance and reinforcing our reputation for engineering excellence.

Core Responsibilities

• Act as the senior owner for client relationships
• Build trusted, long-term relationships across client portfolio
• Provide confidence, clarity and direction on delivery and outcomes
• Identify opportunities to deepen relationships and expand client scope

Commercial performance

• Drive growth across existing client accounts
• Maintain strong oversight of revenue, margin and performance
• Support pricing, scoping and commercial decision‑making
• Contribute to proposals, pitches and new business activity

Delivery excellence

• Lead end-to-end delivery across multiple projects and client accounts, spanning bespoke software and cloud-based services
• Lead the team to deliver high-quality work on time and within budget, setting clear expectations, building accountability and supporting strong performance
• Maintain strong operational discipline, quality standards and effective delivery practices across teams of varying experience and expertise

Team leadership

• Lead, support and develop a high-performing delivery team
• Set clear expectations and build accountability
• Foster a collaborative, positive culture where people can do their best work

About Aspire Systems

Aspire supports clients across the UK, US, Europe, India and Asia Pacific, with global delivery centres and a strong nearshore presence.

With software engineering at its core, Aspire delivers end-to-end services across digital transformation, application modernisation, quality engineering and testing, and infrastructure and application support.

Aspire is recognised for combining disciplined delivery with a people-focused culture, investing in the capability, standards and frameworks that enable consistent client outcomes.

The Cardiff Centre

• Our secure Cardiff hub brings together engineering excellence, curiosity and problem-solving
• Our team includes highly accredited technologists trusted to solve complex, real-world challenges
• From Natural Resources Wales and Skills England to Education Scotland, we deliver technology where it matters most across the UK
• We create opportunities across South Wales, building high-value skills that compete at a UK-wide level

We operate a hybrid working model, with the flexibility to work from home, our Cardiff city centre office, or a blend of both. You should expect to spend 2–3 days a week in the office to support your team and strengthen collaboration.