Nuclear data systems engineerSalary, qualifications, licensing and career path, 2026 edition
A nuclear data systems engineer builds the systems that remember: the historians recording every plant parameter, the architectures that turn decades of readings into something usable, and the archives that must still be readable long after the technology used to create them has disappeared. It is the data discipline of nuclear, and it carries a requirement almost no other industry faces, because some nuclear records must outlive the organisations that produced them.
Nuclear data systems engineers earn a median of around $131,000 in the United States and roughly £51,000–£67,000 at mid to senior level in the UK, rising past £105,000 for a principal. Records-integrity and analytics specialists sit at the top of the range.
No single licence is required. What gates the work is data competence in a regulated setting: security clearance, internal data and change authority, and the ability to build systems whose records will satisfy a regulator decades from now.
The role at a glance
Everything an employer will ask about in the first fifteen minutes of a screening call.
- Also called
- Data engineer (nuclear) · plant data systems engineer · historian engineer · data architect · records systems engineer
- Entry qualification
- BEng/BSc in computer science, software engineering, data engineering or a numerate engineering discipline. Data modelling and software fundamentals are screened for.
- Typical entry pay
- $79,000–$109,000 (US) · £31,000–£38,000 (UK graduate)
- Senior / principal pay
- $151,000–$206,000 (US) · £76,000–£105,000 (UK principal)
- Contract day rates
- £560–£750 for nuclear data systems engineering; £680–£900 for records-integrity and long-term archive work outside IR35; $105–$165/hr on US data support
- Professional gate
- No licence. UK: SQEP designation for defined scopes at senior grades. Data and change authority over controlled records is the practical gate.
- Security
- UK BPSS minimum, SC common. US: unescorted access authorisation where systems connect to plant equipment.
- Where the work sits
- Waste and decommissioning operators, operating utilities, fuel-cycle facilities, and specialist data or systems consultancies. Among the most hybrid-friendly roles in the cluster.
- Travel
- Low. Data work is largely office-based, with occasional site visits for system integration and stakeholder workshops.
- TRX segments
- Radioactive waste management · Decommissioning & dismantling · Operating fleet · Fuel handling & fuel cycle · Large new build · Fusion
Six versions of the same job title
"Data systems engineer" changes with the time horizon: plant analytics measured in months, operational records measured in decades, and disposal records measured in centuries. Note the top segment: waste management leads because its records requirements are the most extreme in the sector. Bar shows relative hiring volume across TRX's 2026 desk activity.
Radioactive waste management
Data systems for waste inventory, packaging and disposal: what is in each package, where it came from, where it is, and records that must remain retrievable and trustworthy far beyond the life of any current system. GDF programmes, waste operators.
Decommissioning & dismantling
Data across a decommissioning estate: characterisation results, material tracking, and consolidating decades of records from facilities being retired, often held in formats and systems nobody supports any more. Sellafield, Magnox fleet.
Operating fleet
Plant historians and analytics on operating stations: capturing plant data reliably, making it available for engineering analysis, and supporting condition monitoring and performance work.
Fuel handling & fuel cycle
Data systems for fuel-cycle facilities, including material accountancy and safeguards records where accuracy carries international obligations.
Large new build
Data architecture for a new plant: the historian, the plant information model, and the digital record of an asset intended to run for sixty years or more. Hinkley Point C, Sizewell C.
Fusion
Research and machine data for fusion, where experimental campaigns generate very large volumes that must be captured, catalogued and analysed. UKAEA, ITER.
What the week actually looks like
A composite day for a mid-level data systems engineer at a waste operator, decommissioning site or utility, owning data systems. Strongly hybrid, with occasional site and stakeholder time. Migration projects and regulatory submissions shape the rhythm — noted below.
What nuclear data systems engineers are paid in 2026
Bars show the 25th to 90th percentile of base salary. The marker is the median. Switch currency to move between the US and UK markets, which behave differently.
How nuclear data systems compares to adjacent roles
US figures. The nuclear engineer and software developer medians are BLS OEWS May 2025; the specialism ranges are TRX market analysis, because these are not separately coded by BLS.
| Occupation | Median | P10 | P90 | What moves the number |
|---|---|---|---|---|
| Nuclear data systems engineer | $131,000 | $86,000 | $206,000 | Records integrity, long-term architecture, analytics, clearance |
| Software developers (all industries) | $132,270 | $79,000 | $215,000+ | Technology-sector competition, which nuclear must match rather than beat |
| Nuclear SCADA engineer | $127,000 | $84,000 | $198,000 | Real-time supervisory systems, HMI, data acquisition |
| Nuclear software assurance engineer | $134,000 | $89,000 | $212,000 | Independent V&V of safety-classified software |
Sources: US BLS OEWS May 2025 for the coded occupations; TRX market analysis Q3 2026 for the specialism ranges. This role is a deliberate exception to the pattern elsewhere in this cluster: it sits roughly level with the general software market rather than above it, because data engineering skills are highly portable and nuclear competes directly with the technology sector for the same people rather than commanding a premium over them.
Long-term records architecture
Designing systems whose records will remain trustworthy and retrievable across generations is a genuinely unusual requirement, and very few engineers have done it.
Regulatory data integrity
Data that must satisfy a regulator, or support a safety case decades later, demands rigour beyond ordinary data engineering and is priced accordingly.
Legacy data migration
Recovering and reconciling decades of records from obsolete systems is unglamorous, difficult and consistently short of people across the decommissioning estate.
Three ways in, and only one of them starts with a nuclear degree
Data systems is the most portable discipline in this cluster, which cuts both ways: entering nuclear from the technology sector is straightforward, but nuclear must compete on more than pay to attract and keep people.
Graduate, United Kingdom
Three to six years to senior.
Graduate, United States
Three to seven years to senior.
Career changer
Three to twelve months, the most portable crossover in the cluster.
Are you actually ready to compete for a nuclear data role?
Everything above tells you what the market pays and what it asks for. It does not tell you how your CV reads against the other engineers applying for the same data post, and in a field where domain understanding separates otherwise similar candidates, that is the part that costs candidates the job.
Free resume scoring on avua, TRX's job search and application platform. Your score is yours; it is not shared with employers.A strong technology-sector data CV can still miss the shortlist if it does not show regulated records or domain understanding. The gap is the part you can fix.
Illustrative figures based on TRX shortlisting patterns across nuclear data systems vacancies. Your own score is generated by avua from your CV and the role you are targeting.
The credentials that actually gate the work
Data systems is the least credential-gated discipline in this cluster. What controls the work is authority over controlled records and, where systems touch plant equipment, site access.
| Credential | Jurisdiction | Required for | Time | Notes |
|---|---|---|---|---|
| Data / records change authority | US / UK | Modifying controlled records systems | Role-specific | Internal; controlled records are subject to formal change control. |
| BPSS / SC clearance | UK | Site access and sensitive data | 2–20 wk | SC is common; sensitive material data can require more. |
| Unescorted access authorisation | United States | Systems interfacing with plant equipment | 4–10 wk | 10 CFR 73 background check; not needed for purely corporate data work. |
| Records management standards | All | Long-term records and archive work | Ongoing | Not a licence, but expected where retention obligations are long. |
| SQEP designation | UK | Signing or approving data deliverables at senior grades | Role-specific | Employer-assessed against a defined scope; not portable without reassessment. |
| Platform certifications | International | Vendor-specific historian and data platforms | Days–weeks | Employer-funded; a practical differentiator between candidates. |
| CEng or chartered IT professional | UK / Commonwealth | Optional; senior grades | 4–7 yrs | Via the IET or BCS; less universal than in engineering disciplines. |
| Safeguards awareness | International | Material accountancy data work | Varies | Relevant where data supports international obligations. |
Requirements change with programme and site. Confirm the specific scope with the employer before assuming a credential transfers.
What appears on a 2026 nuclear data systems engineering shortlist
Drawn from the nuclear data systems requirement specifications TRX has worked in the last twelve months, ordered by how often each is a hard filter.
Named on the specification
- Data architecture and modelling — Structuring data so it stays meaningful over time
- Databases — Relational and time-series, including plant historians
- Data pipelines — Ingesting and reconciling data from disparate sources
- Data quality and validation — Detecting and correcting what is wrong or missing
- Programming — Python, SQL and the tooling of modern data engineering
- Records and retention — The obligations that govern nuclear data
What decides between two shortlisted candidates
- Long-term records design — Architecture intended to survive technology generations
- Regulatory data integrity — Data that will withstand regulatory scrutiny
- Legacy migration — Recovering records from obsolete and undocumented systems
- Plant analytics — Turning historian data into engineering insight
- Domain understanding — Knowing what the data represents, not just its schema
- Writing — The data model and its documentation are what make records usable later
The 2026 demand map
Data demand concentrates where records obligations are heaviest and where legacy information must be recovered. This is among the most location-flexible work in the sector.
| Programme | Location | Phase in 2026 | Engineering demand |
|---|---|---|---|
| GDF & disposal programmes | UK & global | Design and development | Very high; century-scale records architecture |
| Sellafield & NDA estate | Cumbria, UK | Decommissioning | Very high; legacy migration and characterisation data |
| Waste operators | UK & global | Operations | Inventory, packaging and tracking systems |
| US operating fleet | Nationwide | Operations | Historian, analytics and condition-monitoring data |
| DOE site programmes (Hanford, SRS) | US | Cleanup | Legacy records recovery and characterisation data |
| Data & systems consultancies | Global | Cross-programme | Data engineers supplied across every programme above |
| Fuel-cycle facilities | Global | Operations | Material accountancy and safeguards data |
| Hinkley Point C / Sizewell C | UK | Design and commissioning | Plant information model and historian architecture |
| UKAEA / fusion | UK | Research campaigns | Large-volume experimental data systems |
| SMR developers | US, UK & Canada | Design | Fleet-wide data and monitoring concepts |
Programme phases move. Confirm current status before making a relocation decision; TRX tracks these weekly.
A portable skill with an unusual domain problem.
Nuclear needs data engineers for the same reasons every industry does, plus one it shares with almost nobody: records that must remain trustworthy across generations. That gives the sector a distinctive and durable demand, particularly in waste and decommissioning. The trade-off is that these skills are portable, so nuclear competes directly with the technology sector on pay rather than commanding a premium, and retention depends heavily on how interesting the domain problem is.
Why experienced nuclear data engineers have leverage.
The scarcity here is not data engineering itself but data engineers who understand nuclear records obligations and what plant data actually represents. Meanwhile the decommissioning estate depends on records created by people now retiring, making legacy recovery increasingly urgent. Data engineers who combine modern platform skills with genuine domain understanding are consistently harder to find than headcount figures suggest.
Adjacent and onward roles
Data systems sits alongside the supervisory systems that generate data and the disciplines that consume it. These are the moves TRX sees most often.
Questions we get asked every week
How much does a nuclear data systems engineer earn in 2026?
In the United States the market runs from about $79,000 for a graduate to $131,000 at the median, with principals past $206,000. In the UK it runs from £31,000–£38,000 for a graduate to £81,000–£105,000 for a principal. Unusually for this cluster, that sits roughly level with the general software market rather than above it, because data skills are portable and nuclear competes directly with the technology sector. Records-integrity specialists sit at the top of the range.
Do you need a licence to work as a nuclear data systems engineer?
No licence exists, and this is the least credential-gated role in the cluster. What gates the work is internal data and records change authority, security clearance for sensitive data, and, where systems interface with plant equipment, unescorted access authorisation.
Can you become a nuclear data systems engineer without a nuclear degree?
Yes, and most people in these roles do not have one. Data engineers from any sector transfer almost directly, because the platforms and techniques are the same. The nuclear-specific part is the records and retention obligations, regulatory data expectations, and enough domain understanding to model plant or waste data meaningfully, which is what separates a good nuclear data engineer from a general one.
Is nuclear data systems a good career in 2026?
It is steady and intellectually distinctive, with strong demand across waste, decommissioning and the operating fleet, and a genuinely unusual problem at its centre in long-horizon records. The honest caveat: because the skills are portable, pay tracks the wider technology market rather than carrying a nuclear premium, so the case for staying rests more on the interest of the work than on compensation.
What is the difference between a nuclear data systems engineer and a SCADA engineer?
A SCADA engineer builds the real-time supervisory system: acquiring data from controllers, displaying it, alarming on it, so operators can supervise the plant now. A data systems engineer works on what happens to that data afterwards: how it is stored, structured, reconciled with other sources, analysed, and kept retrievable for as long as obligations require. Put simply, SCADA is concerned with the present and data systems with the record. They meet at the historian, which SCADA feeds and data systems architects, and engineers do move between them, but one is operational and real-time while the other is architectural and long-horizon.
Which nuclear data skills are most in demand in 2026?
Long-term records architecture leads, because it is the requirement nuclear has and other industries largely do not. Close behind is legacy data migration across the decommissioning estate and regulatory data integrity. Data architecture, databases and historians, pipelines and data quality are the near-universal hard filters.
We only recruit in nuclear. That is the whole point.
TRX works across large new build, fusion, new technology development, decommissioning, radioactive waste management and nuclear medicine, in 14+ countries. Send us your CV and we will tell you honestly which data path your experience actually fits, and what it is worth.