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"Principal Software Engineer - Java" Jobs in United Kingdom
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Principal Systems Software Engineer
Honeywell Aerospace · Bristol
SeniorFull-timeHybrid
This posting is for an Application Software Engineer reporting directly to the Sr. Director of the Propulsion Control System within Engine and Power Systems Strategic Business Unit (SBU). You will work closely with produ
Skills
DO178CARP4754
Discovered 1 weeks ago
ApplyPrincipal Software Engineer (Platforms)
Rowden Technologies · Bristol
SeniorHybrid
Key areas of responsibility Build the Internal Developer Platform: design, build, and run the platform that Rowden's software teams and their coding agents depend on to write, test, ship, and operate code. Own software e
Skills
We don't expect anyone to be a 10/10 in every area, and you don't need to tick every single bullet point to apply. What follows is a list of the skills and experience that we think matter most for this role. Different strengths are welcome. - Substantial experience as a principal or staff software engineer. - Demonstrable experience building developer platforms, internal tooling, and paved paths used by engineering team. - Hands-on experience implementing agentic AI in real engineering workflows (beyond individual experimentation). - Experience designing the guardrails around agentic AI: sandboxing, permissioning, audit logging, or observability for tools operating with elevated access. - Deep, hands-on experience of CI/CD, infrastructure as code, containers, and Kubernetes. - Experience of building and deploying reproducible development environments. - A track record of driving adoption by persuasion and good product decisions, not mandate. - Clear written communication, including documentation that engineers actually read. About you - You treat the platform as a product and your colleagues as customers, and you measure yourself on their throughput rather than your own. - You notice friction that everyone else has learned to live with, and you fix it. - You're a genuine advocate for agentic engineering. You make the case for it with evidence, help teams adopt it well, and are honest about where it isn't the right tool. - You are opinionated about tooling and you change your mind when the evidence changes. - You are comfortable owning something long-lived rather than moving between projects. - You can tell the difference between a genuinely better tool and a fashionable one. - You are honest about trade-offs, including the ones in your own work. No prior defence experience is required. We're interested in people who've built and run developer platforms in demanding environments, wherever that was.
Discovered 1 weeks ago
ApplyPrincipal Software Engineer
Leonardo · Basildon
SeniorFull-timeHybrid
Job Description: The Opportunity Are you a Software Engineer with C++ experience looking for your next challenge? Here at Leonardo, we are seeking an experienced Principal Software Engineer to take on pivotal technica
Skills
C++CTCP/IPUDP
Discovered 1 weeks ago
ApplyPrincipal Software Engineer
RTX (Raytheon UK) · Manchester
SeniorFull-timeHybrid
Date Posted: Country: Location: Position Role Type: Raytheon UK have a full time, permanent opportunity for a Principal Software Engineer to join our team on our Manchester or Gloucester sites within a hybrid working
Skills
ReactNextJSTypeScriptPython
Discovered 1 weeks ago
ApplyAssociate Principal Embedded Software Engineer
Dyson · Malmesbury
SeniorFull-timeOnsite
About Us The Electronic Systems Research Team is responsible for inventing and developing many of the key technologies that enable Dyson’s innovative new products. Our global team operates across the UK and Singapore, w
Skills
CC++ARMPython
Discovered 1 weeks ago
ApplyLet's begin! Principal Software Engineer-AI (14865)
Moody's Corporation · London
SeniorFull-timeOnsite
12+ years of software engineering experience, including 5+ years leading engineering teams and delivering complex, large-scale, multi-team initiatives with measurable business impact Experience leading multiple teams or
Skills
TypeScriptPythonC#AWS
Discovered 1 weeks ago
ApplyPrincipal Software Engineer-AI
Moody's · London
SeniorFull-timeOnsite
12+ years of software engineering experience, including 5+ years leading engineering teams and delivering complex, large-scale, multi-team initiatives with measurable business impact Experience leading multiple teams or
Skills
TypeScriptPythonC#AWS
Discovered 1 weeks ago
ApplySoftware Engineer, Principal
Infor ·
SeniorFull-timeOnsite
A Typical Day in the Life Includes: Defining the AI architecture, standards, and technical strategy for MES and the Manufacturing portfolio. Designing scalable, secure, and reliable AI-enabled product features using clou
Skills
Large Language Models (LLMs)Retrieval Augmented Generation (RAG)C#.NET
Discovered 1 weeks ago
ApplyPrincipal Platform Software Engineer (Database Platform)
Oracle ·
SeniorFull-timeOnsite
Join Oracle Cloud Infrastructure's Internal Oracle Database (IOD) team, a Tier-0 team responsible for the data platform that powers virtually every OCI service. IOD provides fully managed database services for mission-cr
Skills
Oracle Cloud Infrastructure (OCI)Oracle Database
Discovered 1 weeks ago
ApplyPrincipal Software Engineer
Cisco · London
EntryFull-timeHybrid
Meet the Team Cisco ThousandEyes is a Digital Experience Assurance platform that empowers organizations to deliver flawless digital experiences across every network - even the ones they don’t own. Powered by AI and an u
Skills
JavaKotlinC++Docker
Discovered 1 weeks ago
ApplyPrincipal Software Engineer
Rocket ·
SeniorFull-timeRemote
It's fun to work in a company where people truly BELIEVE in what they're doing! Job Description Summary: Essential Duties and Responsibilities : Architect, design, and implement Change Data Capture and data integration
Skills
CC++Db2 for z/OSDb2 LUW
Discovered 1 weeks ago
ApplyPrincipal Software Engineer, Linux Kernel - Isovalent
Isovalent ·
SeniorFull-timeRemote
Principal Software Engineer, Linux Kernel - Isovalent Isovalent, now part of Cisco, is the company founded by the creators of Cilium and eBPF. Cisco Isovalent builds open-source software and enterprise solutions solving
Skills
LinuxLinux kernelCBPF
Discovered 1 weeks ago
ApplyPrincipal .NET Software Engineer
Infor ·
SeniorFull-timeHybrid
A Typical Day in the Life Includes: Defining the AI architecture, standards, and technical strategy for MES and the Manufacturing portfolio. Designing scalable, secure, and reliable AI-enabled product features using clou
Skills
C#.NETLarge Language Models (LLMs)Retrieval Augmented Generation (RAG)
Discovered 1 weeks ago
ApplySenior Principal Software Engineer - TS/SCI
Rocket Lab Corporation · Stansted Mountfitchet
Senior
ABOUT ROCKET LAB Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move f
Skills
angularcplusplusfastapigit
Discovered 1 weeks ago
ApplyPrincipal Software Engineer
Freeform · Stansted Mountfitchet
USD 225000-400000 / yearSenior
PRINCIPAL SOFTWARE ENGINEER Freeform builds AI-native manufacturing systems that unify software, hardware, and physics to produce industrial-scale parts at the speed of human ideation. By treating manufacturing as a sing
Skills
cplusplusrust
Discovered 1 weeks ago
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