Mid-project and short-handed
A teammate left, scope grew, or velocity stalled — you need experienced hands now, not in three months.
Developers
Extra developers · On your team in days
Need extra
developers?
Add them in days.
Short-handed mid-project, or facing a deadline you can’t hire for in time? Wistkey adds vetted engineers to your team — backend, frontend, mobile, QA, DevOps, data and AI — in as fast as 48 hours. Extend your own team or hire a dedicated dev team, with a project manager included. London HQ, delivering across the UK and Hong Kong.
Get developers →
No long lock-in.
One-month minimum.
One-month minimum.
How the engagement works
Project manager included
Every engagement ships with PM support to drive delivery.
One-month minimum
Scale headcount up or down month to month as demand shifts.
7–14 day replacement
A replacement window keeps delivery stable, by contract.
48 hrs
To deploy engineers
127+
Engineers ready to deploy
1 mo
Minimum engagement
2
Regions — UK & Hong Kong
When teams call us
When you need extra
developers, fast.
If any of these sound familiar, augmenting your team is usually quicker and lower-risk than opening a permanent role.
A deadline you can’t hire for
A fixed launch or contract date is approaching and the recruitment cycle simply won’t finish in time.
A skill you don’t have in-house
You need mobile, DevOps, data or AI expertise for one phase — without hiring a permanent specialist for it.
Scaling a team up or down
Demand is spiky. You want to add capacity for a push and scale back afterwards, without carrying permanent cost.
Ways to work with us
Three ways to add
engineering capacity.
Pick the model that fits your stage, timeline and risk profile — all delivered to one standard, with a PM included.
On-demand deployment
We assign the right engineers to your project fast, shortening recruitment cycles and reducing hiring risk while productivity ramps.
As fast as 48 hoursProject outsourcing
We take full, end-to-end ownership of development or operations, so you stay focused on your core business while we drive delivery.
End-to-end ownershipDedicated team
A long-term, stable team built exclusively for you — an extension of your organisation, embedded in your process and culture.
Long-term & embeddedMake the call
Staff augmentation vs
outsourcing vs hiring.
Three common ways to get more software built. Here is how they compare when you need capacity quickly.
| Staff augmentation (extend your team) |
Project outsourcing | Hiring in-house | |
|---|---|---|---|
| Time to start | As fast as 48 hours | 1–3 weeks to scope | 2–6 months to recruit |
| Who manages the work | You do — engineers join your team and process | Wistkey owns delivery end to end | You do |
| Commitment | One-month minimum, then month to month | Per project / scope | Permanent employment |
| Cost model | Flat monthly rate per engineer, no recruitment fees | Fixed or milestone-based | Salary + benefits + recruitment + overhead |
| Flexibility | Scale up or down month to month | Fixed to the agreed scope | Low — hiring and offboarding are slow |
| Best for | Adding capacity or skills fast while keeping control | Handing off a defined build or system | Long-term core roles you’ll always need |
Skills on the bench
The stacks our
engineers ship.
The technologies we run in production across web, mobile, data and AI — covering the vast majority of what our clients need. Need something not listed? Ask — chances are we’ve shipped it.
Frontend & UI
React, Next.js, Vue / Nuxt, Angular, TypeScript, JavaScript, Tailwind CSS, Material UI, Bootstrap.
Backend & APIs
Java / Spring Boot, Node.js (NestJS / Express), .NET / C#, PHP (Laravel / Yii2), Python, REST & GraphQL.
Mobile
React Native, Flutter, native iOS (Swift), native Android (Kotlin / Java).
Databases & data
MySQL, PostgreSQL, MongoDB, Redis, Oracle, SQL Server, ElasticSearch, BigQuery, Spark.
Cloud & DevOps
AWS, Azure, Firebase, Docker, CI/CD, GitLab.
AI, CMS & emerging
LLM integration & RAG, OCR / computer vision, WordPress / Magento / Shopify, IoT, AR & Unity, blockchain.
Proof, not promises
Teams we’ve added to,
work we’ve shipped.
A sample of platforms our embedded engineers have delivered across enterprise and government. See the full case studies.
Kowloon Motor Bus
Rebuilt the operator’s flagship mobile app with data migration and a new route-recommendation algorithm — 500K+ daily active users.
Mobile · 500K+ DAUSky Group
Data scrubbing and A/B testing across 100TB+ of UK-wide router data for a major British media and telecom group.
Data · 100TB+HK Government
Delivered 15+ public-sector platforms — public health lab results, smart-traffic IoT monitoring and 3D/AR weather visualisation.
Government · 15+ platformsWhere we deliver
Developers across the
UK and Hong Kong.
Headquartered in London and delivering across both the UK and Hong Kong, with engineering hubs in Shenzhen and Manila — so we staff fast, span overlapping time zones and keep cost competitive.
United Kingdom
London HQ and client partnerships, with engineers who work in your time zone, sprints and tooling. Trusted by UK enterprises including Sky.
Hong Kong
Client-facing delivery and public-sector engagement from Central, with 15+ Hong Kong government platforms delivered over 10+ years.
Shenzhen & Manila
Core engineering, QA and operations capacity that lets us assemble a full cross-functional team in days, not months.
Frequently asked
Hiring extra developers,
answered.
On-demand deployment can put the right engineers on your project in as fast as 48 hours, drawing on a bench of 127 engineers. Most engagements onboard within days rather than the months a direct hire takes.
Tell us the stack, seniority and timeline you need and we match engineers from our existing bench — there is no job posting, screening or notice period to wait through. A project manager is included to coordinate onboarding into your sprints and tooling.
Staff augmentation adds developers who work inside your team under your direction, so you keep control of the roadmap. Project outsourcing hands an entire scope of work to Wistkey to own end to end. Hiring in-house means recruiting permanent employees yourself — the slowest and least flexible option, but with the most long-term control. Augmentation is usually the fastest way to add capacity.
Pricing is a transparent monthly rate per engineer based on role and seniority, with no recruitment fees, benefits overhead or long lock-in. You scale headcount up or down month to month, so cost tracks the work. Contact us for a quote against your specific stack and team size.
Yes. Engagements run on a one-month minimum, after which you continue month to month and scale up or down as demand shifts. There is no multi-year commitment.
Backend (Java / Spring Boot, Node.js, .NET, PHP, Python), frontend (React, Next.js, Vue, Angular, TypeScript) and mobile (React Native, Flutter, native iOS & Android), plus QA, DevOps (AWS, Azure, Docker, CI/CD), data (MySQL, PostgreSQL, MongoDB) and AI (LLM integration, RAG, computer vision) engineers — along with project managers and solution architects. We match engineers to your existing stack.
Yes — that flexibility is the point. Add engineers as a project ramps and reduce headcount when it winds down, adjusting month to month rather than carrying permanent cost.
Both. You can take individual engineers to extend your existing team, or a long-term dedicated team built exclusively for you and embedded in your process and culture. A project manager is included on every engagement.
Yes. Engineers slot into your sprints, stand-ups and tooling from week one and follow your cadence. With hubs from London to Hong Kong, Shenzhen and Manila we cover overlapping time zones for UK and Asia-based teams.
Yes. Wistkey is headquartered in London and delivers across both the UK and Hong Kong, with additional engineering hubs in Shenzhen and Manila. We have delivered 15+ Hong Kong government platforms and worked with UK enterprises including Sky.
A 7–14 day engineer replacement window is available by contract, so if someone isn’t the right fit we swap them in without disrupting delivery.
Get in touch
Tell us what you’re
building.
Share your stack, the roles you need and your timeline. We reply within one business day — and can have engineers ready in as fast as 48 hours.