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Senior Software Engineer - UltraGrid

hypervolt.co.uk Logo

Hypervolt Limited

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Location:
United Kingdom, London

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

Not provided

Job Description:

This is an excellent opportunity for god-tier engineers to join a very experienced software team, building mission-critical infrastructure for a growing company. UltraGrid is the core engine behind Hypervolt's applications. It features a soft real-time mechanism for controlling and monitoring distributed energy assets, streaming over 100,000 events per day from each connected node on the grid—all at incredibly low operating costs. Designed for sub-second, multi-gigawatt grid-balancing, UltraGrid is built to be a critical component of a nation's energy security.

Job Responsibility:

Working on streaming, networking, storage, and other facets of the system, with an extreme focus on cost and performance

Requirements:

  • 10+ years of professional software development experience, with a strong focus on architecting, optimizing, and delivering performance-critical systems
  • Deep expertise in Java, Scala and the JDK, leveraging the Java ecosystem for high-performance applications. Proficiency in Rust is a bonus
  • Experience with NixOS is considered a huge plus
  • Proven ability to diagnose, profile, and optimize complex systems using advanced performance analysis tools and methodologies
  • Demonstrated experience in tuning multi-threaded and parallel computing environments, managing concurrency, and applying lock-free designs for efficient resource utilization
  • Familiarity with performance engineering technologies and low-cost always on profiling, metrics and observability
  • Extensive understanding of foundational computer science principles, data structures, and algorithms
  • Extensive understanding of networking and fundamental building blocks of the Internet
  • Firm grasp of distributed consensus algorithms and their practical applications in building scalable, reliable systems
  • Exceptional analytical skills to identify and resolve intricate performance bottlenecks in production-level systems
  • Experience driving technical excellence and fostering a culture of continuous improvement
  • Excellent communication skills with the ability to articulate complex technical concepts to technical and non-technical stakeholders
  • Proven success collaborating with cross-functional teams, including close partnerships with SREs and automation specialists in fast-paced, dynamic environments
  • A Bachelor's degree in Computer Science, Engineering, or a related field or equivalent industry experience. Advanced degrees or relevant certifications are a plus
  • A PhD in computer science or an interest in performance engineering and distributed consensus algorithms is a big bonus

Nice to have:

  • Previous experience contributing to a mainstream Apache project, preferably involving the JDK
  • Prior work in a performance engineering environment at leading tech companies like Netflix or Twitter
  • Strong experience working with resource right-sizing and developing deeply cost-optimized code
  • Previous experience working on a core database engine, such as building a database from the ground up
  • You enjoy reading and writing academic computer science papers and have a list of favourites if queried by the team
  • You're not worried about AI code completion taking your job anytime soon
What we offer:
  • Competitive Compensation
  • Stock options
  • Comprehensive Coverage: Health, dental, and vision plans, plus wellness and mental health support
  • Work-Life Flexibility
  • Additional Perks: We'll buy you a laptop. Whichever one you want
  • Innovative Environment: A culture like no other. Work with peers and people who truly value exceptionally good software

Additional Information:

Job Posted:
December 09, 2025

Work Type:
Hybrid work
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