Full-Time

System Reliability Engineer

Quantum Computing

Posted on 11/26/2025

Quantinuum

Quantinuum

501-1,000 employees

Full-stack quantum hardware and software solutions

No salary listed

Cambridge, UK

Hybrid

Category
DevOps & Infrastructure (1)
Required Skills
Kubernetes
Python
opentelemetry
Docker
AWS
Terraform
Requirements
  • Experience with Kubernetes and Docker.
  • Experience collecting logs, traces and metrics for distributed systems.
  • Experience using tools such as AWS CloudWatch to locate bugs and performance issues.
  • Experience improving declarative Infrastructure as Code tools such as Terraform.
  • Experience working on cloud based systems where uptime and reliability are crucial.
  • Professional experience working with Python.
Responsibilities
  • Manage the architecture, performance, security and cost of the managed Kubernetes instance (such as Amazon Elastic Kubernetes Service).
  • Collect logs, traces and metrics using OpenTelemetry and make readings available through AWS products like X-Ray and CloudWatch.
  • Use readings to ensure that Nexus meets performance and reliability standards and direct improvements when needed.
  • Be active in reporting, monitoring and diagnosing outages or issues.
  • Read and understand production code to map it to monitoring readings and collaborate with the development team to resolve issues quickly.
Desired Qualifications
  • Experience with PostgreSQL.
  • Experience working in a continuous deployment environment.
  • Experience with triaging and debugging issues in code.
  • Familiarity with the OpenTelemetry standard and SDKs.

Quantinuum provides both quantum hardware and software. Its H1-1 processor runs any quantum program, and TKET is an architecture-independent stack that lets developers design circuits usable on different quantum devices. It adds quantum-secure protection by delivering encryption keys hardened for quantum threats at the device level. Its goal is to help real-world problems like fast drug development, new materials design, and supply-chain optimization, while keeping data safe from evolving cyber threats.

Company Size

501-1,000

Company Stage

Late Stage VC

Total Funding

$1.4B

Headquarters

Cambridge, United Kingdom

Founded

2021

Simplify Jobs

Simplify's Take

What believers are saying

  • DARPA selected Quantinuum for Stage B Quantum Benchmarking Initiative targeting 2033 utility-scale.
  • RIKEN upgraded Reimei-Fugaku platform with 56-qubit H2 system for pharmaceutical research acceleration.
  • Nitesh Sharan appointed CFO April 2026 to drive commercialization ahead of planned IPO.

What critics are saying

  • IonQ's 36-qubit system outperforms H1 on algorithmic qubits, eroding hardware leadership.
  • PsiQuantum's photonic approach targets 1M qubits by 2027, bypassing trapped-ion noise limits.
  • IPO delays from SEC scrutiny over Honeywell control and qubit fidelity claims risk valuation.

What makes Quantinuum unique

  • Only company combining trapped-ion hardware with universal software stack TKET across platforms.
  • H-Series systems achieved 33.5M quantum volume in September 2025, industry-leading benchmark.
  • Deployed Helios system with real-time GPU-accelerated decoding for fault-tolerant quantum computation.

Help us improve and share your feedback! Did you find this helpful?

Benefits

Health Insurance

Dental Insurance

Vision Insurance

401(k) Retirement Plan

401(k) Company Match

Flexible Work Hours

Paid Vacation

Paid Sick Leave

Parental Leave

Employee Discounts

Growth & Insights and Company News

Headcount

6 month growth

-1%

1 year growth

0%

2 year growth

-1%
PR Newswire
Mar 18th, 2026
Quantinuum appoints Nitesh Sharan as CFO to drive quantum computing commercialisation

Quantinuum has appointed Nitesh Sharan as chief financial officer, effective 6 April 2026. Sharan brings over 25 years of global finance experience across technology, consumer products and consulting. He joins from SoundHound AI, where he served as CFO for nearly five years, leading the company through its 2022 public listing and overseeing strategic financial planning, accounting and corporate strategy. Previously, Sharan spent more than five years at Nike in various leadership roles, including vice president of investor relations and treasurer, and held senior positions at Hewlett-Packard over 15 years. Quantinuum chief executive Rajeeb Hazra said Sharan's experience guiding companies through complex growth and capital market environments will be crucial as the quantum computing company accelerates commercialisation.

HPCwire
Jan 14th, 2026
Honeywell Says Quantinuum Files Confidential Draft Registration for Proposed IPO

Honeywell says Quantinuum files confidential draft registration for proposed IPO. CHARLOTTE, N.C., Jan. 14, 2026 - Honeywell (NASDAQ: HON) today announced that Quantinuum LLC, which is majority owned by Honeywell, plans to make a confidential submission of a draft registration statement on Form S-1 to the U.S. Securities and Exchange Commission (SEC) relating to the proposed initial public offering of Quantinuum's common stock. The number of shares to be offered and the price range for the proposed offering have not yet been determined. The offering is subject to market and other conditions and the completion of the SEC's review process. This press release is being made pursuant to, and in accordance with, Rule 135 under the Securities Act of 1933, as amended, and shall not constitute an offer to sell, or the solicitation of an offer to buy, any securities. Any offers, solicitations or offers to buy, or any sales of securities, will be made in accordance with the registration requirements of the Securities Act. About Honeywell Honeywell is an integrated operating company serving a broad range of industries and geographies around the world, with a portfolio that is underpinned by our Honeywell Accelerator operating system and Honeywell Forge platform. As a trusted partner, we help organizations solve the world's toughest, most complex challenges, providing actionable solutions and innovations for aerospace, building automation, industrial automation, process automation, and process technology, that help make the world smarter and safer as well as more secure and sustainable. About Quantinuum Quantinuum is the world leader in quantum computing. The company's quantum systems deliver the highest performance across all industry benchmarks. Quantinuum's over 630 employees, including 370+ scientists and engineers, across the US, UK, Germany, and Japan, are driving the quantum computing revolution. For more information, please visit www.quantinuum.com. BOZEMAN, Mont., Jan. 14, 2026 - QCORE, Montana State University's Quantum Collaborative Research and Education facility, has been... Jan. 14, 2026 - Toyota Systems Corporation (Toyota Systems) and Fujitsu Limited, in collaboration with... TORONTO and NEWTON, N.J., Jan. 13, 2026 - Xanadu Quantum Technologies Inc., a leading photonic... PALO ALTO, Calif., Jan. 13, 2026 - PsiQuantum announced today that the company is collaborating with... NEW YORK, Jan. 13, 2026 - Haiqu, an emerging quantum software company, today announced an... AUSTIN, Texas, Jan. 12, 2026 - Accelsius, a leader in two-phase, direct-to-chip liquid cooling for AI...

Cryptopolitan
Nov 8th, 2025
Quantum stocks rally ~2,000% on hype not revenue, as bulls and skeptics clash

Quantum stocks rally ~2,000% on hype not revenue, as bulls and skeptics clash. * By Jai Hamid * Updated: November 8 2025 8:00 PM UTC In this post: * Rigetti and D-Wave stocks have jumped over 1,900% despite minimal revenue and no near-term profitability. * Investors are betting on future breakthroughs in Quantum computing, even though real-world use is still theoretical. * Analysts are split, with bulls seeing huge upside and skeptics warning of a momentum-fueled bubble. Quantum stocks tied to Rigetti Computing Inc. and D-Wave Quantum Inc. have surged more than 1,900% in the past year on expectations that the technology they are building will become the next major computing breakthrough, according to Bloomberg. Both companies are valued above $10 billion each, even though they currently produce only a small fraction of the revenue generated by traditional firms of similar size. Their machines are still in development stages, most uses are experimental, and the firms are burning cash while generating limited commercial income. They are worth more than Campbell's Soup while making less than 1% of its revenue, according to Bloomberg, so this trading frenzy has turned one of the most experimental areas of advanced computing into a heated battleground for investors. Supporters insist that if quantum computing technology being developed eventually works at scale, it could solve problems that classical machines cannot, but skeptics argue the market is ignoring fundamentals and is chasing hype with no clear timeline. Bulls describe a future payoff. Quantum backers say the technology being developed is meant to build machines far more powerful than traditional systems by performing calculations in parallel instead of one at a time. Some investors reportedly believe this will one day help design new drugs, model complex climate systems, and handle data workloads that overwhelm today's best hardware. Troy Jensen from Cantor Fitzgerald allegedly told Bloomberg that:- "If it works, it's going to be huge and explosive. If not, it could go to zero." The trade has been compared to early biotechnology investing, where investors can wait years for progress that may or may not arrive. The uncertainty is significant. Many researchers and executives accept that the potential is huge, but the timeline is unclear. Earlier this year, Nvidia chief Jensen Huang said meaningful results could still be decades away. Even so, political and corporate interests have not slowed. The Trump administration has named Quantum computing development a strategic priority. Fidelity International took part in a new financing round for Quantinuum, valuing the startup at $10 billion. Google has reported progress as well. Last year, the company stated that a chip it developed completed a task in five minutes that would have taken a supercomputer 10 septillion years. Traders who watched AI-related stocks rise over the past two years have moved quickly, aiming to position themselves before another wave of technology adoption. Haim Israel from Bank of America Merrill Lynch said, "Capital markets don't want to miss this moment." Alphabet saw its shares move higher on Oct. 22 when research suggesting new advances in its Willow processor briefly added $30 billion in market value. Skeptics highlight valuations and downside risk. Meanwhile, Bruce Cox of the Harrington Alpha Fund is betting against Rigetti Computing, saying, "There are no earnings, nothing to go on. The froth is crazy." And the recent pullback supports his view, because both Rigetti and D-Wave Quantum have crashed more than 34% from last month's highs, wiping out about $12 billion combined, according to data from Yahoo Finance. Financial comparisons show how stretched the valuations are. Rigetti, based in Berkeley, is expected to make around $20 million in the next four quarters, mostly from development contracts and component sales. At today's prices, the stock trades at more than 500 times projected revenue. Palantir trades at 72 times forward revenue. The Nasdaq 100 trades at under six. For Rigetti to be valued similarly to Nvidia at 17 times forward sales, its annual revenue would need to exceed $600 million. Analysts expect about $40 million in 2027. Even with these issues, analysts remain mostly positive. Six of seven analysts tracking Rigetti rate it a buy, with one neutral. All ten covering D-Wave Quantum recommend buying. Benchmark analyst David Williams raised his price target from $20 to $50, which prompted what he described as the most hate mail he has received in more than fourteen years. Williams said retail traders and momentum seekers are heavily involved and that long timelines make price swings inevitable. "Quantum's not going to escape a broader market selloff," he said.

Bloomberg Law
Nov 5th, 2025
Fidelity Invests in $10 Billion Honeywell-Backed Quantinuum

Fidelity International is investing in Quantinuum for the first time, joining the latest funding round for the quantum computing company controlled by Honeywell International Inc.

AInvest
Sep 19th, 2025
NVIDIA invests $10B in Honeywell's Quantinuum

Honeywell's stock rose 0.6% after NVIDIA's venture capital arm invested $10 billion in Quantinuum, a quantum computing company controlled by Honeywell. This investment values Quantinuum at $10 billion and underscores the growing interest in quantum computing technologies. The partnership is expected to leverage NVIDIA's and Intel's technologies for AI data centers, potentially opening up new market opportunities worth $50 billion. This marks a significant milestone for Honeywell and the quantum computing industry.

INACTIVE