ApplySarthi

Staff Software Engineer, Runtime

ionq

Tailor my CV for this job, freeView job and applyYour CV rewritten for this role, from your real experience. Sign in with Google, nothing to install.

Got this interview? Our apps help you get the job.

Skills named in this job

Read from the description itself, not inferred.

This role on the market

11,815 open software roles across 782 companies are on ApplySarthi right now, most of them in Bengaluru (805), Hyderabad (313), Pune (177).

What software roles keep asking for: Python (27%), Java (26%), AWS (26%), System design (23%), C++ (19%), Observability (18%), Kubernetes (18%), CI/CD (16%) — counted across their open postings here.

Software Engineer jobs in Germany · Remote Software Engineer jobs · AWS jobs · Financial modelling jobs · Linux jobs · Rust jobs

ionq has 33 open roles listed here.

Counted across 14 company job boards, updated as roles open and close.

Preparing for this interview

Interviews for software roles keep coming back to Python, Java, AWS, System design. Practise those questions before you sit with ionq.

Questions you are likely to be asked

  1. Why do you want to join ionq?
  2. What is your experience with Rust? Tell me one thing you learned the hard way.
  3. Describe a time a deadline forced a trade-off in quality. What did you choose and why?
  4. How would you design an API for a feature you have worked on?
  5. What do you do when a production issue happens on your code?

Prep Sarthi gives you a free mock interview: an AI interviewer asks you questions like these out loud, from your own CV and this job, and shows your score and your weakest answer.

Practise the Staff Software Engineer, Runtime at ionq interview free →

About IonQ: 

IonQ, Inc. [NYSE: IONQ] is the world’s leading quantum platform and merchant supplier - delivering integrated quantum solutions across computing, networking, sensing, and security. IonQ’s newest generation of quantum computers, the IonQ Tempo, is the latest in a line of cutting-edge systems that have been helping customers and partners including Amazon Web Services, and AstraZeneca achieve 20x performance results and accelerate innovation in drug discovery, materials science, financial modeling, logistics, cybersecurity, and defense. In 2025, the company achieved 99.99% two-qubit gate fidelity, setting a world record in quantum computing performance.

Headquartered in College Park, Maryland, IonQ has operations in California, Colorado, Massachusetts, Tennessee, Washington, Italy, South Korea, Sweden, Switzerland, Canada, and the United Kingdom. Our quantum computing services are available through all major cloud providers, while we also meet the needs of networking and sensing customers across land, sea, air, and space. IonQ is making quantum platforms more accessible and impactful than ever before.  

Location: This role is based at our Oxford, England (UK) office, with the option to work a few days a week remotely.
Travel: Up to 5%
Job ID:
1830

The Role: 

We are looking for a senior Systems Software Engineer to join our Runtime Software team at Oxford Ionics / IonQ. In this role, you will be responsible for working directly with the experimental scientists to implement the real-time control system behaviours and provide abstractions they require for their experiments, contributing to the team’s mission of enabling our science teams to experiment and improve the primitive operations which allow compute, and building towards fault tolerant computation.

You’ll play an important part in shaping the core, Rust, libraries and the execution environment which take our system from a collection of hardware to a quantum computer, and support our work in building the world’s most advanced quantum systems.

 

Responsibilities:

In this position, you will work on developing abstractions over real-time control hardware, supporting the effective delivery of a control system capable of repeatedly and reproducibly driving our ions with nano-second level precision, with abstractions which are conducive to both fast iteration and system scaling.

You’ll have the opportunity to accelerate the science core to the development of our systems, and contribute to the core execution model of our quantum computers, contributing directly to the success of building utility-scale quantum computers.

Key responsibilities include: 

Requirements:

To be successful, you will need strong programming skills in a systems programming language, experience with software system design, and a desire to produce high quality code appropriate to a real-time environment. We’re looking for someone who can quickly iterate on low-level code in a collaborative, cross-disciplinary, environment and contribute effectively within a fast moving, highly technical team.

Compensation will vary based on individual factors such as education, qualifications, and experience of the final candidate(s), specific office location, and calibration against relevant market data and internal team equity. Posted base salary figures are subject to change as new market data becomes available. Our benefits include comprehensive medical, dental, and vision plans, matching 401(k), unlimited PTO and paid holidays, parental/adoption leave, legal insurance, and a home technology stipend. Details of participation in these benefit plans will be provided when a candidate receives an offer of employment. 

At IonQ, we believe in fair treatment, access, opportunity, and advancement for all while striving to identify and eliminate barriers. We empower employees to thrive by fostering a culture of autonomy, productivity, and respect. We are dedicated to creating an environment where individuals can feel welcomed, respected, supported, and valued.
 
We are committed to equity and justice. We welcome different voices and viewpoints and do not discriminate on the basis of race, religion, ancestry, physical and/or mental disability, medical condition, genetic information, marital status, sex, gender, gender identity, gender expression, transgender status, age, sexual orientation, military or veteran status, or any other basis protected by law. We are proud to be an Equal Employment Opportunity employer.

 

US Technical Jobs. The position you are applying for will require access to technology that is subject to U.S. export control and government contract restrictions.  Employment with IonQ is contingent on either verifying “U.S. Person” (e.g., U.S. citizen, U.S. national, U.S. permanent resident, or lawfully admitted into the U.S. as a refugee or granted asylum) status for export controls and government contracts work, obtaining any necessary license, and/or confirming the availability of a license exception under U.S. export controls.  Please note that in the absence of confirming you are a U.S. Person for export control and government contracts work purposes, IonQ may choose not to apply for a license or decline to use a license exception (if available) for you to access export-controlled technology that may require authorization, and similarly, you may not qualify for government contracts work that requires U.S. Persons, and IonQ may decline to proceed with your application on those bases alone.  Accordingly, we will have some additional questions regarding your immigration status that will be used for export control and compliance purposes, and the answers will be reviewed by compliance personnel to ensure compliance with federal law.  

US Non-Technical Jobs. Due to applicable export control laws and regulations, candidates must be a U.S. citizen or national, U.S. permanent resident (i.e., current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum. Accordingly, we will have some additional questions regarding your immigration status that will be used for export control and compliance purposes, and the answers will be reviewed by compliance personnel to ensure compliance with federal law.

 

If you are interested in being a part of our team and mission, we encourage you to apply! 

Find Jobs in United Kingdom on Arbeitnow

Match this job to your CV

ApplySarthi scores your CV against this role, shows the skills you are missing, and writes a tailored version for the application.

Check my match →

Similar open roles

Need answers during your interview? Try Live Sarthi.

Live Sarthi, an Interview Sarthi app, shows answer suggestions during the call.

Try Live Sarthi free →

A Windows app, from the same team as ApplySarthi.

Listed on arbeitnow · posted 2026-10-03. ApplySarthi collects openings and links to application pages; the role is advertised by ionq, not by us.