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Staff Software Engineer

Company:
Harness
Location:
Belfast, United Kingdom
Posted:
November 21, 2025
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Description:

Harness is a high-growth company that is disrupting the software delivery market. Our mission is to enable the 30 million software developers in the world to deliver code to their users reliably, efficiently, securely and quickly, increasing customers’ pace of innovation while improving the developer experience. We offer solutions for every step of the software delivery lifecycle to build, test, secure, deploy and manage reliability, feature flags and cloud costs. The Harness Software Delivery Platform includes modules for CI, CD, Cloud Cost Management, Feature Flags, Service Reliability Management, Security Testing Orchestration, Chaos Engineering, Software Engineering Insights and continues to expand at an incredibly fast pace.

Harness is led by technologist and entrepreneur Jyoti Bansal, who founded AppDynamics and sold it to Cisco for $3.7B. We’re backed with $425M in venture financing from top-tier VC and strategic firms, including J.P. Morgan, Capital One Ventures, Citi Ventures, ServiceNow, Splunk Ventures, Norwest Venture Partners, Adage Capital Partners, Balyasny Asset Management, Gaingels, Harmonic Growth Partners, Menlo Ventures, IVP, Unusual Ventures, GV (formerly Google Ventures), Alkeon Capital, Battery Ventures, Sorenson Capital, Thomvest Ventures and Silicon Valley Bank.

Position Summary

Harness IACM (Infrastructure as Code Management) empowers engineering teams to automate, govern, and optimize their infrastructure provisioning at scale. With deep integration into CI/CD workflows, IACM orchestrates cloud resources using best-practice templates, policy-driven controls, and intelligent lifecycle management—delivering secure, compliant infrastructure with speed and reliability. Join us to help build the future of DevOps automation and unlock infrastructure innovation for some of the world’s most ambitious software teams.

About The Role

Design, develops and maintain critical software of scalable platform in fast paced environment

Authors software functional specifications and design documents

Quickly understand complex systems/code and own key pieces of the system, including the delivered quality

Diagnose and troubleshoot complex problems in a distributed computing environment

Establishes the best practices in area of quality, performance & architecture inside the team

Mentors Software Engineers & Senior Software Engineers and provide technical leadership to them

Performs peer reviews of specifications, designs, and code

Identifies the technical debt & scaling issues in the basecode and drives the improvement

Works alongside Site Reliability Engineers and cross functional teams to diagnose/troubleshoot any production performance related issues

We work in Java, Golang, and Python. Our systems are built on top of Docker, Kubernetes, MongoDB, ELK, TimescaleDB, GCP - Stackdriver, GCS, Cloud composer, AI Platform

About You

A desire to build products that solve complex technical problems for end users

7+ years experience developing highly scalable, distributed applications, products and services in Java and Golang

Designing/developing REST, GRPC and GraphQL APIs

Working knowledge of SQL and No-SQL database technologies

Solid foundation in data structures, algorithms and software design with strong analytical and debugging skills

Experience in SAAS platform development with scale

Entrepreneurial spirit, priding yourself on getting things done with a high level of quality

Experience with AWS/Azure/GCP is a plus.

Bachelors in Computer Science, Advanced degree preferred, or equivalent professional experience

Joining the IACM team means you’ll work on a high-impact product at the heart of modern DevOps, solving complex engineering challenges at scale. You'll be surrounded by passionate technologists, move fast, and see your work directly improve the lives of developers around the world—all while growing your career in one of the most ambitious engineering environments in the industry.

Work Location

Hybrid - Belfast

What You Will Have at Harness

Competitive salary

Comprehensive healthcare benefits

Flexible Spending Account (FSA)

Employee Assistance Program (EAP)

Flexible Time Off and Parental Leave

Quarterly Harness TGIF-Off / 4 days

Monthly, quarterly, and annual social and team-building events

Recharge & Reset Program

Monthly internet reimbursement

Commuter benefits

Factors that may be used to determine your actual pay rate include your specific skills, experience, qualifications, location, and comparison to other employees already in this role. In addition to the base salary, certain roles may qualify for a performance-based incentive and/or equity, with eligibility depending on the position. These rewards are based on a combination of company performance and individual achievements.

Harness in the news:

Harness AI Tackles Software Development’s Real Bottleneck

After 'Vibe Coding' Comes 'Vibe Testing' (Almost)

Startup Within a Startup: Empowering Intrapreneurs for Scalable Innovation - Jyoti Bansal (Harness)

Jyoti Bansal, Harness theCUBEd Awards

Eight years after selling AppDynamics to Cisco, Jyoti Bansal is pursuing an unusual merger

Harness snags Split.io, as it goes all in on feature flags and experiments

Exclusive: Jyoti Bansal-led Harness has raised $150 million in debt financing

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex or national origin.

Note on Fraudulent Recruiting/Offers

We have become aware that there may be fraudulent recruiting attempts being made by people posing as representatives of Harness. These scams may involve fake job postings, unsolicited emails, or messages claiming to be from our recruiters or hiring managers.

Please note, we do not ask for sensitive or financial information via chat, text, or social media, and any email communications will come from the domain @harness.io. Additionally, Harness will never ask for any payment, fee to be paid, or purchases to be made by a job applicant. All applicants are encouraged to apply directly to our open jobs via our website. Interviews are generally conducted via Zoom video conference unless the candidate requests other accommodations.

If you believe that you have been the target of an interview/offer scam by someone posing as a representative of Harness, please do not provide any personal or financial information and contact us immediately at . You can also find additional information about this type of scam and report any fraudulent employment offers via the Federal Trade Commission’s website ( or you can contact your local law enforcement agency.

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