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Senior Data Migration Engineer (Contract) We are seeking an experienced Python/Django Data Migration Engineer to design and build a scalable migration framework for our legal case management platform. You will develop ETL pipelines, data mapping tools, validation, reconciliation and import connectors for systems such as Clio, LEAP, Actionstep, ProClaim and CSV/Excel. Strong experience with Python, Django, PostgreSQL, APIs, Celery/background jobs and large-scale data migrations is essential. Experience building migration tooling for SaaS or LegalTech products is highly desirable. The solution must be robust, auditable, scalable and reusable for future migration connectors. You will be required to build tool and once built you will be instructed to do the migration if capable, therefore you will get paid for further jobs as well
Project ID: 40545837
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207 freelancers are bidding on average £483 GBP for this job

⭐⭐⭐⭐⭐ Build Scalable Data Migration Framework with Python/Django ❇️ Hi My Friend, I hope you are doing well. I've reviewed your project requirements and see you are looking for a Senior Data Migration Engineer. Look no further; Zohaib is here to help you! My team has completed 50+ similar projects focused on data migration for legal platforms. I will design and build a robust migration framework, ensuring it is scalable, auditable, and reusable for future needs. I will develop ETL pipelines, data mapping tools, and import connectors for systems like Clio and LEAP. My approach will include thorough validation and reconciliation to guarantee data integrity, all within your budget. ➡️ Why Me? I bring 5 years of experience in Python and Django, specializing in data migration projects. My skills include building ETL processes, designing APIs, and working with PostgreSQL. Additionally, I have a strong grip on Celery and handling large-scale migrations, ensuring a smooth transition for your data. ➡️ Let's have a quick chat to discuss your project in detail and I can provide you with samples of my previous work. Looking forward to chatting with you soon. ➡️ Skills & Experience: ✅ Python ✅ Django ✅ ETL Development ✅ Data Mapping ✅ PostgreSQL ✅ API Integration ✅ Celery ✅ Data Validation ✅ Data Reconciliation ✅ Large-scale Migrations ✅ SaaS Solutions ✅ LegalTech Experience Waiting for your response! Best Regards, Zohaib
£350 GBP in 2 days
8.1
8.1

Hi, this project aligns very well with my background. I have 10+ years of experience building large-scale Python/Django applications, ETL pipelines, PostgreSQL systems, Celery workers, and API integrations. I’ve designed migration frameworks that prioritize data integrity, validation, reconciliation, resumable imports, detailed audit logs, and performance when processing large datasets. My approach is to build a reusable migration engine rather than a one-off script, making future connectors significantly easier to add. I’m confident I can deliver a clean, scalable migration framework first and then execute the actual migrations with minimal downtime and full traceability. I can start immediately and am looking for a long term collaboration beyond the initial migration tool.
£500 GBP in 7 days
7.9
7.9

As a highly experienced and skilled Python/Django developer with a primary focus on tailored web automation, data mining, and AI solutions for over 13 years, I am uniquely suited for your migration project. Indubitably, the expertise that I possess in building ETL pipelines, designing mapping tools, data validation, reconciliation, among others guarantees that I can develop a robust and scalable migration framework for your legal case management platform. The fact that I have effectively tackled related projects in the past including large-scale data migrations implies my profound understanding of the domain and uniquely qualifies me for this role. Choosing me wouldn't just mean receiving a top-tier solution to your current problem but it will also guarantee long-term value. I'm excited about rolling up my sleeves to work on your project and I am resolute in transforming data migration to be both a painless yet consequential part of your platform's evolution. Specialty in Web Automation & Scraping(Nike Splash), Blockchain Development (Solidity), HTML5 Game Development and OpenClaw AI bot install on MacOS And Windows OS
£250 GBP in 1 day
7.2
7.2

Hi! This is right in our wheelhouse — Django, PostgreSQL, Celery, ETL pipelines, we do this kind of work regularly. A few things worth clarifying before diving in: do you have existing data models documented, or would mapping need to be reverse-engineered from the source systems? And for the connectors (Clio, LEAP, etc.) — are these via their official APIs or raw DB exports? That changes the complexity quite a bit. The framework itself I'd design to be connector-agnostic: a core ETL base with pluggable adapters per source, validation/reconciliation layer, audit logging per record, and Celery for async processing with retry logic. Built to add future connectors without touching the core. The budget range feels tight for the full scope described, but happy to talk through what a solid v1 looks like vs. what can be phased — especially if there's ongoing migration work after the tooling is done. Gustavo & the DoTheCode team
£750 GBP in 15 days
7.0
7.0

**LET'S BUILD A SCALABLE DATA MIGRATION FRAMEWORK THAT MAKES EVERY FUTURE MIGRATION FAST, SECURE, AND REUSABLE.** With 12+ years of experience in Python, Django, PostgreSQL, ETL pipelines, API integrations, and enterprise SaaS solutions, I can develop a robust migration framework designed for accuracy, scalability, and long-term use. I'll build reusable ETL pipelines, data mapping and transformation tools, validation and reconciliation processes, background jobs with Celery, audit logging, and import connectors for Clio, LEAP, Actionstep, ProClaim, and CSV/Excel. The framework will feature clean architecture, detailed documentation, and extensible connectors to simplify future migrations. I've successfully delivered complex data migration, automation, and enterprise integration projects, ensuring data integrity and high performance. I'm confident I can also support the actual migration phases once the framework is complete. Let's discuss your architecture, migration requirements, and the best approach to build a reliable long-term solution.
£500 GBP in 7 days
7.0
7.0

Hello, nice to meet you. I can help you build a scalable Python/Django data migration framework for your legal case management platform so that migrations from Clio, LEAP, Actionstep, ProClaim, and CSV/Excel are reliable, auditable, and reusable for future projects. I have worked on similar ETL, API integration, and data migration projects before, so I can start quickly and focus on delivering a robust solution. For this project, I will design and implement a modular migration framework using Python, Django, PostgreSQL, Celery, and REST APIs, including ETL pipelines, data mapping, validation, reconciliation, and import connectors for each supported source. I will also build comprehensive logging, error handling, audit trails, background job processing, and automated validation to ensure data integrity, scalability, and smooth execution of large migrations. One quick question before starting: Which migration source would you like to prioritize first—Clio, LEAP, Actionstep, ProClaim, or CSV/Excel—and do you already have sandbox API access for those platforms? I’m ready to start immediately and can share progress clearly during the work. If you want, we can discuss the framework architecture and begin building the first migration connector today. Thank you, Cuzmuc
£250 GBP in 7 days
6.2
6.2

Hi. Your project's emphasis on LLM integrations and the need for a comprehensive migration solution aligns perfectly with my team’s capabilities. We've built our reputation in AI-powered automation and LLM integrations specifically, which has given us direct hands-on experience dealing with systems like Clio, LEAP, Actionstep ProClaim, CSV/Excel. Our deep understanding of SaaS products coupled with our commitment to performance, security, and scalability makes us the ideal choice for your project in the LegalTech space. By selecting us as your technology partner, not only would you get an exceptional solution for this project but also gain access to a reliable long-term partner capable of managing future migration connectors as we have with some international law firms. Our diligent approach to projects ensures that we manage everything from concept and design to deployment and ongoing optimization while maintaining transparent communication throughout. Let's connect and discuss how we can bring your vision to life.
£500 GBP in 7 days
5.9
5.9

With over X years of experience in Python and Software Architecture, I possess the necessary skills needed to design and build your legal case management platform's data migration framework. My knowledge of Python, Django, PostgreSQL, APIs, Celery, and background jobs will ensure that I can create robust ETL pipelines, effective data mapping tools, as well as conduct validation and reconciliation processes proficiently. What sets me apart is my track record of not just finishing projects on time but delivering high-quality work that meets business needs. My experience in large-scale data migrations also prepares me to handle any challenges that may arise during the process. With my tool implementation, you could trust that your system migration will be efficient and error-free. Recognizing that your migration requirements may change over time, I always aim to future-proof my solutions. Furthermore, I stand in the top 1% among my freelancer peers which is the result of years of exceptional service delivery and client satisfaction. In essence, choosing me would not only mean significant savings for your company's budget but also a long-term reliable partner for all your technical needs including future migrations.
£1,200 GBP in 7 days
6.0
6.0

Hi, I can help design and build a reusable Python/Django migration framework for your legal case management platform, then support actual client migrations once the tooling is ready. I’d structure the system around repeatable ETL pipelines: source connectors for Clio, LEAP, Actionstep, ProClaim, CSV/Excel, mapping rules, validation, transformation, background processing with Celery, import connectors, audit logs, reconciliation reports, and retry/error handling. The goal would be a framework you can reuse for future migrations instead of writing one-off scripts each time. For LegalTech data, I’d pay close attention to relationships between matters, contacts, documents, notes, tasks, billing records, custom fields, and permissions. I’d also include dry-run mode, row-level error reporting, import summaries, and checks so migrated data can be verified before final cutover. I’m comfortable with Python, Django, PostgreSQL, APIs, Excel/CSV processing, background jobs, and building clean admin/operator tools for technical teams. Question 1: Which source system should the first connector support: Clio, LEAP, Actionstep, ProClaim, or CSV/Excel? Question 2: Do you already have a target data model in Django/PostgreSQL, or should mapping/design be part of the first phase? Regards, Houssame
£500 GBP in 7 days
6.5
6.5

Python/Django Expert is here to achieve your goals----->>>> I will build a scalable, secure, and reusable data migration framework with robust ETL pipelines, validation, reconciliation, and API integrations. Strong experience with Python, Django, PostgreSQL, Celery, and large-scale data migrations. Please ping me to get started and provide you with great results. Thanks!!
£540 GBP in 7 days
6.1
6.1

Hi, I can design and build a scalable, auditable data migration framework for your legal case management platform using Python, Django, and PostgreSQL. I will develop robust ETL pipelines and validation connectors specifically tailored for Clio, LEAP, Actionstep, ProClaim, and CSV/Excel sources, leveraging Celery for reliable background processing of large-scale datasets. The solution will be architected as a reusable tool with comprehensive reconciliation logic, ensuring zero data loss and full audit trails for future migrations. You will receive the complete migration framework, documented API connectors, and validation reports. I have extensive experience building LegalTech SaaS migration tools and handling complex case management data transfers, ensuring accuracy and compliance throughout the process. I also offer FREE post-delivery support to monitor initial migration runs, troubleshoot any connector or mapping issues, and assist with minor pipeline adjustments during the first month. Let's discuss the project in more details.
£350 GBP in 7 days
5.9
5.9

How do you want migration auditability handled: full row-level change logs with source-to-target IDs, or summary reconciliation reports per entity? Also, which connector should be prioritized first: Clio, LEAP, Actionstep, ProClaim, or CSV/Excel? I’m Haroon Z, and I can design and build your reusable Python/Django migration framework for a legal case management platform, including ETL pipelines, mapping tools, validation, reconciliation, Celery background jobs, PostgreSQL imports, and API-based connectors. I’m ready to handle scalable, auditable, reusable migration tooling and can also support the actual client migrations afterward. I’m young, a fast learner, and available 24/7 for contract work and follow-up migration jobs. Let’s chat to discuss the answers and define the first connector/workflow. Kind regards, Haroon Z.
£500 GBP in 1 day
5.5
5.5

Hi there, Your legal case migration work needs a reusable framework for Clio, LEAP, Actionstep, ProClaim, and spreadsheet imports, not a one-off script. I have spent the last 4 years solving exactly this type of problem, building Python/Django ETL systems with PostgreSQL validation, Celery-driven imports, mapping layers, and audit trails that made migrations repeatable and safe. The real risk here is silent data loss across entities, relations, and edge cases like matter histories, contacts, notes, and document links. A junior engineer often focuses on ingestion only; I’ll build reconciliation and exception handling so every imported record is traceable back to source. I’ll design the framework in Django, separate source adapters from mapping rules, add row-level validation, and create clear reconciliation reports. I’ll also make the connectors reusable so future legal platforms can be added without rewriting the pipeline. Thanks, John allen.
£555 GBP in 1 day
5.7
5.7

I am excited to help with your data migration needs. With my strong experience in Python and Django, I can design a scalable migration framework tailored for your legal case management platform. I will create robust ETL pipelines and data mapping tools, ensuring every detail is validated and reconciled correctly. Using PostgreSQL and Celery, I will ensure the solution is efficient and can handle large-scale data migrations. I understand the importance of building reusable migration connectors. This will save time and effort for future migrations. I am ready to tackle the migration once the tools are in place. How soon do you need the migration framework ready? What systems do you prioritize for the initial migration? Are there any specific compliance requirements for the legal data? Looking forward to discussing this further!
£250 GBP in 11 days
5.7
5.7

The single biggest risk for a legal case migration is silent data loss or mismapped matter/client relationships that create exposure for lawyers. If the mapping, idempotency and audit trail are not nailed up front, every migrated file becomes a liability. I have built data normalization and ETL pipelines for multi-source SaaS systems and would take a defensive, auditable approach focused on those exact risks. My approach - Deliver a Django-based, pluggable migration framework with connector adapters for Clio, LEAP, Actionstep, ProClaim and CSV/Excel. Each adapter runs as a discrete import job under Celery with chunked processing, rate limiting and retry logic. - Use a staging schema in PostgreSQL to normalize source objects (clients, matters, contacts, documents, time entries). Provide a mapping UI or JSON mapping config, validation rules, and a dry-run mode that produces reconciliation reports and a full audit trail before any writes. - Ensure idempotent upserts, transactional batching, and reconciliation exports that show source vs imported record links, plus automatic checksum and row-level change logging for legal auditability. - Deliver test suites and a rollout plan: sample dry-run, small pilot, then staged production loads with rollback checkpoints. Relevant project On CrowdAxis I built weekly ETL jobs that pulled from 10 external sources, normalized data into a unified schema, and ran background scoring. That work mirrors your need to map heterogeneous source APIs into one case model and to run reliable background processing at scale. Assumptions and estimate - Fee: 500 GBP for the migration framework MVP covering CSV/Excel plus one API connector and the mapping/validation UI. - Timeline: 3–5 weeks depending on connector complexity and sample data availability. - Stack: Python, Django, PostgreSQL, Celery, REST/OAuth connectors. Do you want me to both build the tool and perform the migrations? If yes, please share sample CSV exports and sandbox API credentials or your current DB schema/ERD so I can firm the timeline and test plan.
£500 GBP in 7 days
5.3
5.3

✋ Hi there. I can build a robust, scalable data migration framework for your legal platform with connectors for Clio, LEAP, and other legal systems. ✔️ I have rich experience building ETL pipelines and data migration tools, and recently delivered a similar SaaS data migration framework that migrated 1 million+ case records with validation and reconciliation. I will develop this by designing a Django-based architecture with reusable connectors for external systems, implementing ETL pipelines with Celery for background processing to handle large datasets asynchronously, building a data mapping UI for field-level transformations, adding comprehensive validation and reconciliation checks, ensuring audit logging for every record, and creating a data import schema that can be extended for new systems. Please click the 'Chat' button to start our valuable conversation. Looking forward to collaborating with you! Best regards, Mykhaylo
£500 GBP in 7 days
5.3
5.3

Hi, I can help you with this. I am a developer with extensive experience with automations and integrations. I've helped clients with similar projects. Let me know your interest, Sincerely, Nicolas
£500 GBP in 7 days
5.3
5.3

Hi, I don't just write code—I build reliable solutions that solve real business problems. Whether it's automation, APIs, web applications, AI, or backend development, I can deliver exactly what you're looking for. Looking forward to working with you. Thanks, Deva
£500 GBP in 7 days
5.2
5.2

Hello, I've worked on Python-based backend systems involving ETL workflows, PostgreSQL, REST API integrations, background processing, and data transformation pipelines. I understand that the objective is to build a reusable migration framework that can reliably import, validate, reconcile, and audit data from multiple legal case management systems—not just perform a one-time migration. One question: do you already have field mapping specifications for platforms like Clio, LEAP, Actionstep, and ProClaim, or would creating and maintaining those mapping definitions also be part of this project? Estimated timeline: 14–21 days for the initial migration framework, depending on the number of connectors required. Once the framework is in place, additional migration projects can be completed much more efficiently.
£500 GBP in 15 days
5.1
5.1

Hi! The key to a migration framework you can reuse across Clio, LEAP, Actionstep, ProClaim and CSV/Excel is keeping each source behind a common connector interface, so adding the next system later is a new plug-in — not a rewrite. That's exactly how I'd architect it. My approach: A pluggable connector layer (one class per source: API-based like Clio/LEAP, file-based like CSV/Excel) feeding a shared ETL pipeline: extract → map → validate → reconcile → load. Configurable field-mapping so non-developers can adjust mappings without touching code. Celery for large/background jobs — chunked, idempotent and resumable, so a failed run picks up where it stopped instead of duplicating records. Auditability built in: every record gets a migration status + log, with a reconciliation report (source count vs migrated vs flagged) you can hand to the client as proof of a clean migration. PostgreSQL throughout, structured so future connectors reuse the same validation and reconciliation core. One question to prioritise: which source system is the first migration target, and do you have API credentials/sample exports for it so I can validate the mapping early? I'm a Python/Django + PostgreSQL developer (5.0 rating) and this kind of robust, auditable tooling is squarely my area. I'll deliver in milestones, and I'm glad to continue with the migrations themselves once the framework is proven. — Albert
£450 GBP in 7 days
4.6
4.6

Oldham, United Kingdom
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