{"id":3643746,"url":"https://alion.io/job/kaluza-principal-software-engineer","title":"Principal Software Engineer","company":{"id":51455,"name":"Kaluza","domain":"kaluza.com","url":"https://alion.io/company/kaluza","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":75,"open_postings":5,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":30,"computed_at":"2026-11-04T06:34:25Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom","Bristol, United Kingdom","Edinburgh, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":120000,"max":160000,"currency":"GBP","period":"year","gross":null,"usd_annual":214642},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"CI/CD","optional":false}],"status":"live","first_seen_at":"2026-10-13T12:52:22Z","employer_posted_date":"2026-10-13","last_verified_at":"2026-11-04T07:13:44Z","board_verified":true,"closed_at":null,"days_open":21,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":21},"description":"Location: London, Bristol or Edinburgh (hybrid, three days a week in the office)\nLevel: Principal Engineer TL2 / TL3\nTeam: Enterprise Architecture\nSalary: £120,000 - £160,000 + discretionary bonus\nContract: Permanent\nReporting to: Director of Enterprise Architecture\nPlease note: This role requires an existing right to work in the UK. We can’t offer visa sponsorship, but we review sponsorship role by role, so keep an eye on our careers site for future opportunities.\nAbout Kaluza\nKaluza is the Energy Intelligence Platform, turning energy complexity into seamless coordination. We help energy companies overcome today’s challenges while accelerating the shift to a clean, electrified future.\nOur platform orchestrates millions of real-time decisions across homes, devices, markets and grids. By combining predictive algorithms with human-centred design, Kaluza makes clean energy dependable, affordable and adaptive to everyday life.\nWith teams across Europe, Asia and Australia, and a joint venture with Mitsubishi Corporation in Japan, we power leading companies including OVO, AGL and ENGIE, as well as innovators like Volvo and Volkswagen.\n\nWhat you’ll do\n\nAs a Principal Software Engineer at Kaluza, you will be the leading technical authority for a major global product area comprising multiple modules. You will lead innovation on some of the most complex, ambiguous, and large-scale solutions, aligning them with target architecture standards and contributing to the creation of a scalable platform.\nYou’ll have a broad sphere of influence, enabling multiple teams and serving as a strategic partner to our architecture leadership team and our community of principal and staff engineers.\nYour impact will come mostly from 'hands-off' work; you’ll not be expected to write code day-to-day. But for some challenges, you may need to dive into code-level design or help build a proof-of-concept.\n\nWhat you’ll bring \n Ideally, you’ll have:\nArchitect modern distributed, cloud-based systems applying modern architecture and engineering practices in an enterprise software environment.\n\nShape and influence technical vision and product roadmaps to align with business goals.\n\nProvide hands-on leadership, making appropriate technical choices to satisfy requirements.\n\nMentor and guide engineers in delivering autonomous, loosely coupled distributed systems with proven architectural principles and patterns.\n\nLead technical due diligence and make high-stakes decisions with confidence.\n\nDeliver results, influence diverse audiences, and orchestrate cross-functional solutions spanning multiple product features.\n\nEngage effectively with both technical teams and executive leaders.\n\nWork independently and collaboratively, bringing strong opinions while respecting others, communicating openly, and maintaining self-awareness with a continuous growth mindset.\n\nWhat will set you apart\nExperience enabling engineering teams to use AI and delivering AI/ML powered solutions.\n\nDemonstrable experience in architecting solutions in complex business domains, particularly interface design and data modelling, ideally with experience in AWS and API design.\n\nProven track record delivering global B2B2C SaaS (energy or other mission-critical industries).\n\nSuccess driving adoption of modern engineering practices (e.g. DevOps, CI/CD).\n\nExperience leading teams through significant changes in ways of working.\n\nAbility to ramp up rapidly in new domains and technologies.\n\nOur Values\nFive values guide how we work at Kaluza\nPlay to win: Collective pride in decarbonising energy at scale.\n\nSolve the real problem: Cutting through complexity to focus on real-world outcomes.\n\nBuild trust every day: Consistency, transparency and doing what we say.\n\nOwn the outcome: Full accountability, wins and setbacks, without ego.\n\nGo further together: Collaboration, respect and different perspectives.\n\nOur Perks\nTime off and family: 26 days’ holiday, plus 26 weeks’ full pay for new parents with no qualifying service period\n\nHealth and security: Private medical insurance with virtual GP, life assurance, pension scheme, free mortgage advice and eye tests\n\nPay and flexibility: Discretionary bonus, a Flex Fund of 5% [of salary] to spend on the benefits you want most, retail discounts through Perks at Work\n\nGrowth and setup: Personal learning budget, home office budget\n\nClimate: Furthr, our climate action app\n\nCome as you are\nWe want to meet people from all walks of life. The more inclusive we are, the better our work will be, and we recognise talent on merit and potential. If you’re excited about the role but don’t tick every box, we’d still love to hear from you.\nFind out more on ourcareers page andLinkedIn. 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