Software Engineer (Java)

Software Engineer (Java) (INSIDE IR35) – 14 month contract Remote with occasional travel to the Newport office

The Office for National Statistics (ONS) is the UK's largest producer of official statistics, covering a range of key economic, social and demographic topics. These include measuring changes in the value of the UK economy, estimating the size, geographic distribution and characteristics of the population, and providing indicators of price inflation, employment, earnings, crime and migration.

SC Clearance is an essential requirement for this role; as a minimum you must be willing and eligible to undergo checks. Due to the exceptional requirements of this position (short‑term nature of this role and speed at which we require a postholder in situ) preference may be given to candidates who meet all of the essential criteria and hold active security clearance.

Responsibilities

• Develop and maintain scalable, high‑quality applications using Java and Spring Boot
• Design and build RESTful APIs and web services using Flask and Python
• Work with PostgreSQL, including schema design, performance tuning, and database migrations
• Develop and deploy containerised applications using Docker, with exposure to Kubernetes environments
• Build and optimise cloud‑native solutions on GCP (e.g. Cloud Run, GKE, Pub/Sub, Cloud SQL)
• Collaborate within a cross‑functional team to deliver robust, secure, and maintainable systems

Essential Qualifications

• Proven experience with Spring / Spring Boot
• Solid experience with PostgreSQL (schema design, performance, migrations)
• Strong Python development skills, particularly with Flask (API/web services)
• Experience with Jinja templating or frontend integration
• Hands‑on experience with containerisation (Docker; Kubernetes advantageous)
• Experience working with GCP services (e.g. Cloud Run, GKE, Pub/Sub, Cloud SQL)

Desirable Qualifications

• Experience building and maintaining CI/CD pipelines (e.g. Concourse, GitHub Actions)
• Exposure to microservices architecture

Please be aware that this role can only be worked within the UK and not overseas.

Disability Confident

As a member of the Disability Confident Scheme, ONS guarantees to interview all candidates who have a disability and who meet all the essential criteria for the vacancy. In cases where we have a high volume of candidates who have a disability who meet all the essential criteria, we will interview the best candidates from within that group. We encourage candidates with a disability and/or neurodivergence to apply. In exceptional circumstances, we may also need to apply the desirable criteria in our shortlisting process which may include holding active security clearance.

Armed Forces Covenant

ONS guarantees to interview veterans or spouses / partners of military personnel who meet all the essential criteria for the vacancy. In cases where we have a high volume of ex‑military candidates or military spouses or partners who meet all of the essential criteria, we will interview the best candidates from within that group. In exceptional circumstances, we may also need to apply the desirable criteria in our shortlisting process which may include holding active security clearance.

In applying for this role, you acknowledge that this role falls in scope of the Off Payroll Working in the Public Sector legislation. Any rates of payment quoted will reflect the gross rate per day for the assignment and will be subject to appropriate taxes and statutory costs. As such, the payment to the intermediary and your income resulting from this contract will be different.

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