Data Migration Specialist​/Data Engineer - SQL, ETL & LegalTech

Position: Data Migration Specialist / Data Engineer - SQL, ETL & LegalTech
Location: Nechells

SQL | Data Migration | ETL | Legacy Systems | Cloud Technology | Actionstep
Complex Data. Critical Migrations. Real Ownership.
Know your way around a legacy database? Confident untangling complicated data structures and getting business-critical migrations over the line?
At Nexian, we're helping law firms move beyond outdated systems and embrace modern, cloud-based technology.
We're looking for an experienced, hands-on Data Migration Specialist / Data Engineer to join our growing team and take ownership of migration work streams across multiple client projects.
This is a role for someone who genuinely knows how to deliver migrations, enjoys solving difficult technical problems and can get up to speed quickly.
And if you've also helped improve migration processes, introduce better ways of working or guide other engineers, there's an opportunity to bring that experience to the table too.

The Role at a Glance
Data Migration Specialist / Data Engineer
Fully Remote, UK-Based
Competitive Salary DOE
Full-Time | Permanent

Working Hours:

Some evening and weekend flexibility required for client go-lives, with time off in lieu
About Nexian
Nexian has evolved from a UK managed service provider into a digital transformation partner specialising in technology solutions for law firms.
Our expertise spans digital consultancy, AI strategy, business analysis, data governance and Microsoft technologies.
As Actionstep Global Partner of the Year 2026, we're helping legal practices transition from legacy practice and case management systems to modern cloud-based platforms.
Demand for these projects is growing, and we're expanding our data migration capability to support more clients, deliver consistently excellent outcomes and build a scalable approach to future migrations.
The Opportunity
You'll join an established team of experienced data professionals, taking technical ownership of migrations from initial data analysis through to successful client go-live.
You'll be working across multiple projects, often dealing with unfamiliar databases, complex financial information and legacy systems that don't always behave as expected.
Your responsibilities will include:

• Analysing legacy databases, schemas, relationships and complex data structures.

• Extracting, transforming, mapping and migrating data into cloud-based platforms, primarily Actionstep.

• Developing, maintaining and improving SQL scripts, ETL routines and migration utilities.

• Profiling source data, identifying inconsistencies and defining cleansing requirements.

• Managing trial migrations, user acceptance testing (UAT) and final production cutovers.

• Validating migrated records and reconciling financial information and other critical datasets.

• Investigating migration defects, discrepancies and technical challenges through to resolution.

• Coordinating migration activity across concurrent client implementation projects.

• Working with project managers, consultants and technical colleagues to manage requirements, risks and timelines.

• Producing clear migration specifications, mapping documentation and validation reports.

• Contributing to improvements in migration processes, automation, tooling and documentation.

• You'll also need the flexibility to support occasional out-of-hours and weekend go-lives, with time off in lieu provided.
About You
We're looking for someone with proven technical migration experience who can take ownership of their work and deliver with confidence.
You'll bring:

• Strong, hands-on SQL skills and a solid understanding of relational databases.

• A proven track record of migrating data between business-critical systems.

• Experience extracting, transforming, cleansing and validating complex datasets.

• Confidence interpreting unfamiliar database schemas…