Job Advert
Looking for your next career move in a company that’s shaping the future of satellite communications?
At ETL Systems, we’ve been leading the way in RF design and manufacturing for over 35 years. Our technology powers critical satellite communications infrastructure used by the top 20 satellite operators and teleports worldwide, and 75% of NATO governments rely on our equipment to help protect their citizens.
We’re not just growing, we’re thriving. With three Queen’s Awards for Enterprise in International Trade, and recent acquisitions of Atlantic Microwave, SpacePath Communications, and IRT Technologies, we’ve expanded our capabilities across the full RF chain. This includes everything from antenna to modem, as well as high-power amplifiers and RF test equipment.
What truly sets us apart is our culture.
We are proudly recognised as a Great Place to Work (2024, 2025 & 2026) and named Best Workplace in Manufacturing, Production and Transportation (2025). Our success is built on strong values that shape how we work and grow together:
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Collaboration: We work as one team, united in purpose and committed to shared success.
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Innovation: We embrace curiosity and forward-thinking to drive meaningful progress.
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Excellence: We set ambitious standards and consistently deliver high-quality outcomes.
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Integrity: We act ethically, honestly and with professionalism in everything we do.
If you’re looking to join a company where your ideas are valued, your growth is supported, and your work makes a global impact, ETL Systems is the place for you.
ETL People benefits
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33 days’ holiday per year (including UK bank holidays), rising to 38 days over your first five years’ service.
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Company‑funded Health Cash Plan (helping with everyday healthcare costs).
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Annual Bonus & Salary Review.
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Company Pension.
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Career development and training for all roles.
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ETL Employee Wellbeing Support:, free eye tests, free Employee Assistance Programme, GP anytime.
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ETL People Perks: discounts on shopping, holidays, gym membership, days out, cinema and dining.
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Buy and Sell Holiday Scheme.
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Free on‑site Employee Gym (Hfd HQ) and subsidised Gym memberships via People Perks
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Subsidised on‑site employee Café (Hfd HQ), with free refreshments for all employees
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Free onsite parking, car share scheme and EV charging.
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Casual Business Dress.
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Flexible Hours available with core hours Monday-Friday 8am-4pm (no weekends/evening)
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Annual company events.
Role Overview
A fixed-term intern will support a targeted migration of the organisation’s main Power BI semantic model to a more efficient refresh and preparation pattern by moving existing transformation logic into Dataflows (Gen2 where available) and aligning the approach to Microsoft Fabric ways of working (capacity, OneLake, and governed workspaces). The aim is to achieve a like-for-like migration (not a redesign): reduce refresh time and failures, simplify supportability, and produce clear documentation and handover materials.
This opportunity is offered as a Fixed-Term Contract of 3 months
Objectives
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Migrate existing data preparation steps out of the semantic model and into governed dataflows,maintainingthe same business outcomes and KPI results.
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Adopt Fabric-aligned patterns where available (for example, using Dataflows Gen2 and consistent landing/curation conventions), improving operational support and lineage.
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Improve refresh reliability and performance by standardising refresh configuration, reducing duplicated transformations, and enabling clearer troubleshooting.
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Deliver a cutover-ready package: documentation, validation evidence, and a rollout plan the core team can execute safely.
Key responsibilities
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Baseline the current semantic model refresh process: sources, transformation steps, refresh duration, failure modes, and dependency mapping.
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Create a migration planidentifyingwhich queries/tables will move to dataflows first (staging then curated), including naming, folders, and ownership.
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Build andvalidateDataflows (Gen2 where available), including parameterisation, refresh schedules, and gateway configuration ifrequired; align workspaces to Fabric governance and capacity constraints.
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Update the existing semantic model to consume the dataflow outputs (like-for-like), avoiding unnecessary modelling changes; maintain KPI parity.
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Run validation and reconciliation: row counts, key measurespot-checks, andagreed acceptance tests versus the current production outputs.
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Support a safe cutover: propose release steps, rollback approach, and a communications checklist for affected report owners/users.
Produce runbooks and handover materials: refresh troubleshooting, lineage notes, and a backlog of further improvements (post-migration).
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Deliverables
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A set of governed dataflows (staging + curated) that reproduce the existing transformation logic for the main semantic model, with documented refresh configuration.
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An updated semantic model connected to the dataflow outputs withlike-for-likeresults (validated KPI parity) and improved refresh performance/stability where achievable.
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A validation pack: reconciliation checks, acceptance test results, and a record of any known differences/limitations.
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A cutover plan including release steps, rollback approach, and communications checklist for report owners.
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Runbook and handover pack: dataflow design notes, troubleshooting guide, and a prioritised backlog of post-migration enhancements.
Our ideal candidate
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Working knowledge of Power BI and Power Query (M); understanding of relational modelling and star schema basics.
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Previous experience (academic or practical) with data extraction and modelling—for example, pulling data from Dynamics 365/APIs/SQL and shaping it into analytical tables.
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Curiosity for performance tuning concepts (query folding, reducing transformations in the model, refresh patterns).
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Strong documentation habits and comfort working to standards and checklists.
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Bonus: familiarity with Dataflows (including Gen2), SQL basics, or a data engineering course/module.
Location: This role requires you to work on-site at our modern manufacturing facility in Hereford - Before applying, please make sure you can commute to Coldwell Radio Station, Madley, Herefordshire, HR2 9NE
Closing date: At ETL, we always prioritise efficiency in everything we do. With this in mind, we are looking to commence our interview process without delay and reserve the right to close the opening early should we receive suitable applications.
BPSS Compliant: Due to the nature of our work, all roles require candidates to be BPSS compliant.
VISA Sponsorship: Unfortunately, we are unable to offer sponsorship for this role.
Agency notice: We are looking to source suitable candidates for this role through our internal referral programme, direct marketing, and talent team.
Please note that we do not accept speculative CVs from external suppliers.
