Software Architect | Real-Time, Safety-Critical Software

Cirrus Selection Limited; Stevenage; On-site; GBP 48,000 - 80,000; Full time

Benefits offered by this job

Bonus up to 21%

Pension up to 14%

Hybrid work

Job summary

Cirrus Selection Limited in Bristol is seeking a Software Architect to own the architecture behind complex, real-time systems, ensuring performance, reliability and scalability end-to-end.

You’ll define structure and interfaces, turn requirements into robust designs, and work closely with engineers and specialists. The role offers hybrid working, with strong salary (£80,000) plus a 21% bonus and comprehensive benefits that support career growth.

Qualifications

• Proven experience designing and delivering robust software architectures.
• Background in complex or real-time systems and performance-critical apps.
• Ability to justify design choices and decisions.
• Experience with multiple programming languages or tech stacks.

Responsibilities

• Own end-to-end software architecture across high-integrity systems.
• Define structure, interfaces, and real-time behaviour.
• Translate requirements into robust, scalable designs.
• Collaborate with engineers and architects across teams.
• Influence tools, technologies and long-term strategy.

Skills

Software architecture

Real-time systems

Decision making

Multi-language stack

Cross-functional

Job description

Software Architect

Based inBristol

Salary up to £80,000 + 21% bonus + strong benefits

Not every architect role lets you shape something that actually matters.

This one does.

You’ll take ownership of the software architecture behind complex, real-world systems, defining how everything fits together, performs, and scales. Not just diagrams and theory, but architecture that drives delivery.

You might already be an Architect.

Or you might be the person everyone turns to when the design decisions get difficult.

Either way, this is your step up.

What you’ll be doing:

• Owning end-to-end software architecture across high-integrity systems
• Defining structure, interfaces, and real-time behaviour
• Turning requirements into robust, scalable designs
• Working closely with engineers, architects, and technical specialists
• Influencing tools, technologies, and long-term strategy

What you’ll bring:

• Strong software design and architecture experience
• A background in complex or real-time systems
• Confidence making technical decisions that others rely on
• Ability to explain the “why” behind design choices
• Experience across multiple languages or tech stacks

Why this role stands out:

• Bonus up to 21%
• Pension up to 14%
• Clear route into senior / strategic architecture
• Hybrid working, typically 3–4 days on site
• Work that genuinely has real-world impact

You’ll be working at the cutting edge of advanced engineering, building systems where performance, safety, and reliability are non-negotiable.

If you’re ready to move from contributing to architecture to owning it, this is the move.