Senior Product Engineer

Consortia; Greater London; On-site; GBP 80,000 - 110,000; Full time

Job summary

Consortia is seeking an experienced Senior Product Engineer with a strong backend background to join a collaborative product engineering team building complex software for heavily regulated industries. You will own backend systems across the stack, contribute to architecture decisions, and partner with Product and DevOps to deliver scalable, secure software at enterprise scale.

The role emphasizes clean architecture, performance, testing, and thoughtful design, with opportunities to influence

Qualifications

• Experience designing scalable backend systems.
• Strong understanding of software architecture and system design.
• Experience designing APIs and relational databases.
• Familiarity with modern architectural approaches (DDD/CQRS).

Responsibilities

• Design and build scalable backend systems across the stack.
• Take ownership of key product areas across the full software lifecycle.
• Collaborate with Product and DevOps to shape technical direction.
• Write clean, maintainable, well-tested code and balance quality with delivery.

Skills

Backend engineering

System architecture

APIs design

DDD or CQRS

Product-focused mindset

Cross-stack contribution

Stakeholder communication

Job description

You’re the kind of engineer who enjoys solving difficult technical problems, not just delivering tickets.

This opportunity is suited to someone who thinks deeply about systems, scalability, and software design, but also understands the bigger picture of building great products. Someone who cares about how applications evolve, how they perform under pressure, and how engineering decisions impact both the product and its users.

You’ll join a highly collaborative product engineering team building complex software used within heavily regulated industries. The systems need to be secure, reliable, scalable, and designed with long-term maintainability in mind.

We're looking for a Senior Product Engineer with a strong backend engineering background who is comfortable taking ownership across the stack when needed.

The engineering challenges are predominantly backend focused, spanning architecture, APIs, data modelling, system performance, and platform reliability. However, this isn't a role where you'll be confined to one part of the application. You'll have the flexibility to work across different areas of the product, contributing wherever your expertise can make the biggest impact.

You'll work closely with Product, Engineering, and DevOps teams to design and deliver software that operates at enterprise scale while maintaining the speed and agility of a smaller team.

This is a position where engineering quality genuinely matters. Clean architecture, performance, testing, and thoughtful design are all highly valued, alongside the ability to understand product requirements and turn complex challenges into effective solutions.

What You'll Be Doing

• Designing and building scalable, reliable backend systems
• Taking ownership of key product areas across the full software lifecycle
• Working across the stack where needed to deliver complete product solutions
• Solving complex challenges around performance, scalability, and security
• Collaborating closely with Product and DevOps to shape technical direction
• Contributing to architecture and system design decisions
• Improving and modernising existing systems and functionality
• Writing clean, maintainable, well-tested code
• Balancing engineering quality with practical product delivery
• Helping shape a sustainable, high-performing engineering environment

What We’re Looking For

• Strong commercial experience in backend software engineering
• A track record of building and maintaining complex applications at scale
• Solid understanding of software architecture, system design, and engineering best practices
• Experience designing APIs, working with relational databases, and building reliable services
• An understanding of modern architectural approaches such as DDD or CQRS
• A product-focused mindset, with the ability to think beyond individual technical tasks
• The flexibility and willingness to contribute across the stack when required
• Confidence working with unfamiliar technologies and adapting to different technical environments
• Strong communication skills and the ability to collaborate with both technical and non-technical stakeholders
• Experience working in product-led engineering environments

Engineers who have experienced both fast-moving startups or scaleups and more structured enterprise environments are likely to thrive here, as the role combines elements of both.

We're particularly interested in engineers who have developed deep backend expertise but enjoy the variety, ownership, and broader perspective that comes with product engineering.

• Collaborative engineering culture with fast decision-making
• Small, high-performing team with a strong ownership mentality
• Opportunity to influence technical direction and product development
• Challenging engineering problems with real-world impact
• An environment that values technical excellence, autonomy, and continuous improvement
• The freedom to contribute across different areas of the product rather than being limited to a single specialism

This is an opportunity for an experienced engineer who wants to do more than simply write code. You'll have genuine ownership, influence over engineering decisions, and the opportunity to help shape a complex, evolving product.