Django Modernization & Version Upgrades for UK Teams
Django modernization is upgrading a legacy Django app, from end-of-life versions like 2.x, 3.2, or 4.2 up to current 5.2 LTS, without a risky full rewrite. MicroPyramid audits, upgrades, and rescues Django codebases for UK SaaS, proptech, and agency teams.
Why UK Teams Work With Us
Two reasons UK engineering teams choose MicroPyramid over generic offshore Django shops
Audits Your Compliance Team Can Use
Every codebase audit we deliver for UK clients explicitly maps how personal data flows through your code, documentation your risk and compliance teams can review and act on.
London-Region Cloud by Default
We deploy to AWS eu-west-2 (London) by default for UK clients, keeping data residency within the UK without an extra architectural conversation.
What We Fix & Build for UK Teams
Six Django engineering services, each targeting a specific problem UK products face, with compliance context built in
Django Version Upgrade (LTS to LTS)
Move a legacy Django app off an end-of-life version (2.x, 3.2, or 4.2) up to current 5.2 LTS in safe LTS-to-LTS hops, resolving breaking changes and modernizing abandoned dependencies at each step.
- LTS-to-LTS upgrade path
- Breaking-change remediation
- Dependency modernization & replacement
Privacy-Aware Codebase Audit
A structured review of your Django codebase covering architecture, dependencies, performance, and security, with explicit attention to how personal data is stored, logged, and shared.
- Personal-data flow mapping
- Dependency & support-risk assessment
- Performance bottleneck analysis
Performance Optimization
Resolve the slow queries, N+1 ORM problems, and cache misconfigurations that make UK SaaS and proptech products unreliable during peak traffic, before they hit your NPS score or a regulatory review.
- Query optimization & indexing
- Redis caching strategy
- Async & background task tuning
Security Hardening
OWASP vulnerability remediation, authentication review, secrets management, and CSRF/injection fixes, with documentation your risk and compliance teams can use to demonstrate due diligence.
- OWASP top-10 remediation
- Auth & session security
- Audit trail documentation
Architecture Cleanup
Refactor the spaghetti code that slows every sprint. Improve separation of concerns, decouple business logic from view layers, and build a test suite your UK engineering team trusts before every release.
- Modular architecture redesign
- Characterization test coverage
- Dependency decoupling
Rescue & Recovery
Take over a struggling Django project (inherited from a departing agency, a burned-out freelancer, or an offshore team), stabilize it, document it, and hand your in-house team a clear path forward.
- Rapid triage & stabilization
- Technical debt mapping
- Handover & documentation pack
Which Django Versions Are Still Supported?
If your app runs on 2.x, 3.2, or 4.2, it is no longer receiving security patches. Here is where each release stands, and the target we upgrade UK apps to.
Django 2.x & 3.2
End of lifeNo longer receives security patches. Running these in production is an unpatched-vulnerability and data-protection risk.
Django 4.2 LTS
Support ended (April 2026)Extended support has lapsed, so security and data-loss fixes have stopped. Time to plan the move to 5.2 LTS.
Django 5.1
Feature release, supersededA non-LTS feature release. Fine to run short-term, but 5.2 LTS is the stable target for a multi-year horizon.
Django 5.2 LTS
Recommended targetThe current long-term-support release, with security and data-loss fixes through April 2028. This is where we land most UK upgrades.
Django support dates move every year. We track them so you don't have to, and plan your upgrade before a version goes dark, not after.
How We Upgrade Without Taking Production Down
The methodology behind a safe Django upgrade: staged, reversible, and verifiable at every step
LTS-to-LTS Hops
We upgrade one long-term-support release at a time (3.2 → 4.2 → 5.2) so each step has the smallest, best-documented set of breaking changes and third-party packages stay compatible along the way.
Strangler-Fig Migration
For larger modernizations we replace the system module by module behind the running product, so value lands early, users stay served, and you can pause or adjust at any phase instead of betting on one big-bang cutover.
Dual-Version Compatibility
The app is made to run correctly on both the old and new Django version at once, so the upgrade can ship in stages and be verified in production-like conditions before the final switch.
Reversible, Staged Migrations
Database migrations are written to be backwards-compatible and applied in safe stages, with risky operations on large tables sequenced to avoid locking, and a rollback path kept at every step.
Best Fit For
- UK Django or Python SaaS products on older versions (2.x / 3.2 / 4.2) with fragile dependency chains
- proptech, SaaS, or agency platforms that need privacy-aware data handling in their code
- teams inheriting a messy codebase from a previous agency or contractor that is blocking feature work
- founders who need a clear audit and written roadmap before deciding between upgrade, cleanup, or rebuild
Not the Right Fit When
- greenfield products with no legacy Django constraints
- engagements looking only for junior ticket execution without architecture or cleanup ownership
- projects requiring a full cross-stack migration rather than Django-specific modernization
- teams unwilling to invest in testing, cleanup, or staged rollout before shipping more features
If the problem extends beyond Django alone, review Modernization & Upgrades or the global Django service page.
How a UK Engagement Works
Every engagement starts with a codebase audit, so you know exactly what you are dealing with, including data-handling risks and your version gap, before committing to any remediation
Codebase Audit
Systematic review of structure, dependencies, version gap, performance, personal-data handling gaps, and security, delivered as a written report your whole team can act on
Upgrade & Architecture Plan
Prioritized roadmap with the LTS-to-LTS upgrade path, estimated effort, risk level, compliance implications, and clear sequencing for each phase
Staged Sprint Execution
Fixed-scope sprints using dual-version compatibility and reversible migrations: clear deliverables, daily Slack visibility, and a rollback path at every step
Testing & Handover
Test coverage improvements, CI/CD setup, staged deployment to eu-west-2, monitoring hooks, and a documentation pack for your team
Django & Python Stack for UK Deployments
Deep expertise across the full Django ecosystem, deployed to AWS eu-west-2 (London) for UK data residency by default
Core Framework
Data & Storage
DevOps & Cloud
How to Get Started
We recommend starting with a Codebase Audit. You get a complete picture of your version gap and risks before committing to any remediation sprints
Codebase Audit Sprint
Recommended start
A complete picture of your Django codebase: version gap, technical risks, personal-data handling gaps, performance bottlenecks, and a prioritized improvement roadmap
- Architecture & security review
- Personal-data flow mapping
- Written report + upgrade roadmap
- Prioritized action items
Modernization Sprint
Fixed-scope implementation of the highest-priority improvements from your audit: the LTS upgrade and fixes shipped to eu-west-2 with proper test coverage
- LTS-to-LTS version upgrade
- Performance & security fixes
- Clear deliverables & timeline
Ongoing Engineering
Continued security releases, dependency upkeep, and feature development once your Django foundation is solid, retainer or T&M, invoiced in GBP
- Regular delivery sprints
- Security & dependency upkeep
- Retainer or time-and-material in GBP
Selected Work
Django products we have built and keep running in production
BottleCRM
Open-source, self-hosted CRM for startups and SMBs: CRM workflows, invoicing, support, and multi-tenant architecture on Django.
Read case study
CREDITABLE
Employee financial wellness platform covering savings, workplace loans, and repayment workflows tied to the employer relationship.
Read case study
NowFinance
Loan advisor portal with affiliate network management, dynamic dashboards, and workflow support for financial consultants.
Read case studyDjango Modernization FAQs
Straight answers to what UK founders and CTOs ask us before starting a Django upgrade or rescue engagement.
What is Django modernization?
Django modernization is upgrading a legacy Django application (bringing it from an end-of-life version such as 2.x, 3.2, or 4.2 up to a current long-term-support release, removing technical debt, and fixing performance and security issues) without rewriting the whole product. In practice it means a staged version upgrade (usually LTS to LTS), dependency cleanup, test-coverage improvements, and security hardening, done behind the running application so users see no downtime.
Is Django 4.2 still supported?
No. Django 4.2 LTS reached the end of its extended support in April 2026, so it no longer receives security patches. Running 4.2, or older 3.2 / 2.x, in production now means unpatched vulnerabilities, which is a real concern for any UK business handling personal data. We plan and execute the upgrade to 5.2 LTS without breaking production.
How long does a Django version upgrade take?
It depends on how many versions you are behind, the size of the codebase, and your existing test coverage. A single LTS hop on a well-tested app can take a few weeks; an app several majors behind with little test coverage takes longer because we add characterization tests first so the upgrade is verifiable. We always start with a fixed-scope audit so you get a concrete timeline and fixed estimate before committing.
What drives the cost of a Django upgrade or modernization?
The cost is driven by how many major versions you need to cross, the size and test coverage of the codebase, the number of out-of-date third-party dependencies, and whether security or performance work is in scope. We do not quote a number blind. After a short discovery sprint we give you a fixed estimate, billed in GBP via Stripe or GoCardless, so you know the scope and price before any build sprint starts.
Should I modernize my Django app or migrate to something like FastAPI?
Usually modernize. Django’s batteries-included admin, ORM, auth, and security defaults are a genuine asset, and a clean upgrade to current LTS is far cheaper and lower-risk than a rewrite. Migrating part of the system to FastAPI makes sense only for specific high-concurrency or async-heavy services, and even then we typically run it alongside Django rather than replacing it. We recommend the smallest change that fixes the actual problem, which we confirm in the audit.
Can you upgrade a Django app that is several major versions behind?
Yes. That is one of the most common engagements we take on. We upgrade in LTS-to-LTS hops (for example 2.2 → 3.2 → 4.2 → 5.2), resolving breaking changes and updating or replacing abandoned third-party packages at each step, and adding tests where coverage is thin so each hop is verifiable. Inherited, undocumented codebases from a departed agency or contractor are squarely in scope.
Can you host my Django app in the UK, and does an old version put data at risk?
We deploy to AWS eu-west-2 (London) by default so your data and backups stay in the UK, and every audit maps how personal data flows through your code so your compliance team has documentation to work from. An out-of-date Django version is itself a security risk: unpatched issues weaken the protection around your users’ data, so a version upgrade is often the first step toward a defensible security posture.
Do you offer ongoing Django maintenance and security support after the upgrade?
Yes. Once your Django foundation is current we can stay on a retainer or time-and-material basis to apply security releases, keep dependencies current, and continue feature work, invoiced in GBP. You keep full ownership of the code and IP throughout.
Ready to Fix Your UK Django Product?
Start with a free discovery call. We will assess your codebase, flag your version gap and any data-handling risks, and propose a concrete audit sprint to move forward, no vague estimates, no junior handoffs.