Senior-only · Embedded · UK
Staff Augmentation

Staff Augmentation UK — Senior Engineers, Embedded in 2 Weeks

Tackxel offers senior engineer staff augmentation in the UK — pre-vetted AI, mobile, and web engineers embedded directly into your team in two weeks. Skip the six-month senior hiring cycle. The same senior engineers behind Lexa and 11+ shipped products.

Senior-only. No agency middle layer. No junior bench. Match a vetted senior to your stack in days; productive on your sprint cadence in two weeks.

NDA on request. Shortlist in 4 working days.
Senior engineers embedded in a team
Who this is for

Three reasons teams call us for staff aug

Same boutique team, different framing per use case.

Startup hiring slower than the roadmap

Skip the six-month senior hiring cycle.

You need senior engineering hands now, not in Q3. We embed proven builders into your team this month so the roadmap doesn't slip while you finish the search.

  • Match a candidate to your stack and seniority bar in days.
  • Senior-only profiles. No graduate bench masked behind senior interviews.
  • Monthly commitment. Extend, shrink, or close on a notice period that fits.
Scaleup with a specific skill gap

Plug the gap without a full-time hire.

You need a niche skill the team doesn't have yet — iOS, IoT, AI integration, ERP, Next.js — and you'd rather not hire permanently for it. We embed the right senior, your team owns the work.

  • Targeted skill match: iOS, Android, React Native, Next.js, AWS, AI, IoT.
  • Embeds with your standards, codebase, sprint cadence, and review process.
  • Knowledge transfer baked in so the skill stays after the engagement ends.
Bridge to a full-time hire

Ship while you hire. Don't trade off either.

You're hiring permanently but the role takes time to fill, and the work can't wait. We bridge the gap with a senior on the same level — and hand over cleanly when your hire lands.

  • Senior-level coverage on day one. No ramp tax.
  • Documented handover the day your full-time hire signs.
  • Notice-period flexibility so the bridge doesn't outstay its welcome.
What you get

Senior engineers, not agency theatre

Every line below is the standard, not the upsell. If something doesn't fit your shape, the scoping call is where we say so honestly.

Senior-only profiles

Every engineer placed has shipped production systems for 5+ years. We don't place juniors against senior briefs. Ever.

Embedded, not outsourced

Your team's standup. Your codebase. Your sprint cadence. Your review process. They're a team member with a notice period, not a remote vendor.

Match in days, not months

Brief on Monday. Shortlist by Thursday. Interview the week after. Productive sprints inside two weeks of close.

Vetted on craft, not CVs

Every candidate is screened by the founder against your stack, your seniority bar, and the actual problem they'll work on. No agency churn.

Full-stack range

iOS, Android, React Native, Next.js, Node, Rails, AWS, AI integration, IoT, ERP. If it's in our 6 services, we can place for it.

Clean contracts, clean exits

MSA + SOW. Monthly commitment, transparent notice period. Knowledge transfer documented. Hand over the day your full-time hire lands.

How we deliver

Match. Interview. Onboard. Operate.

Brief on Monday. Productive sprints by week two. No agency project manager standing between you and the work.

01
Days 1–4

Match

Brief us on the role, stack, seniority, and the actual problem. We shortlist senior profiles from our network — no résumé spray.

  • Role brief
  • Vetted shortlist
  • Engineer profiles with shipped-work links
02
Days 5–10

Interview

You interview the shortlist on craft, fit, and the work they'll actually do. We coordinate scheduling, brief the candidate, and gather feedback.

  • Direct interviews with shortlist
  • Reference checks
  • Final candidate decision
03
Days 10–14

Onboard

Equipment, access, your standards, your codebase. Senior engineers ramp in days, not months. Productive sprints from week two.

  • Equipment + access
  • Codebase walkthrough
  • First sprint plan
04
Ongoing

Operate

They're on your standups, your retros, your sprints. We stay in the background for engagement health checks, no project management overhead.

  • Embedded contributor
  • Monthly engagement check-in
  • Notice-period flexibility
Profiles we place

Senior roles, across the six services

If it's in our service mix, we can place for it. Brief us on the role and we'll come back with a shortlist.

Senior mobile

iOS (Swift), Android (Kotlin), React Native, Flutter. App Store and Play Store releases handled.

Senior full-stack

Next.js, React, Node, Rails. Production AWS deployments and CI/CD.

Senior AI engineer

GPT, LLMs, RAG, agents. Eval pipelines and cost-aware production deployment.

Senior IoT

BLE, NFC, cellular IoT. AWS IoT Core, MQTT, device telemetry pipelines.

Senior backend

AWS ECS / RDS / Lambda. Node, Python, Go. EDI integrations, API platforms.

Product designer

UX research, design systems, production UI, developer handover.

Related insights
FAQ

Frequently asked questions

Quick answers to the questions buyers ask before a discovery call.

How fast can you embed engineers in our team?+
Two weeks is the typical timeline from brief to productive in your standups. We can usually shortlist matches in 2–3 days, run technical interviews with you the following week, and have the chosen engineer onboarded into your repos, tooling, and rituals by the end of week two. For urgent gaps we've moved faster — just say so up front.
What's the difference between staff augmentation and hiring an agency?+
An agency owns the project and delivers an outcome; you describe what you want, they go away and ship it. Staff augmentation embeds engineers into your team — they work on your sprint, your code review, your standup, with your engineering leadership in command. You don't outsource the outcome; you extend the team. Both are valid; staff aug is the right call when you want the work owned in-house, not handed back.
What seniority do your engineers have?+
Senior only — typically 7+ years of professional experience, with a body of shipped production work. No junior bench, no "senior" mislabelled middle-weights. The same calibre of engineer who builds our own products (including Lexa, LuxeLocker, ShiftERP and others). We turn down engagements where senior isn't actually what's needed.
Do they work in our timezone?+
Yes — we match on time-zone overlap as a first-class criterion. Most engagements have full UK / EU overlap (4+ hours minimum); for clients further afield we set up a clear async rhythm with sufficient overlap for standups, pairing, and code review. We won't propose an engineer whose hours don't actually fit how your team works.
What does staff augmentation cost?+
Senior engineering staff augmentation in the UK typically runs £8k–£14k per engineer per month depending on seniority, specialism (AI / mobile / web), and engagement length. Shorter and AI-specialist engagements are at the higher end; longer commitments and standard stacks at the lower end. A discovery call gets you a rate sheet for your specific role — no obligation.
Can we hire them full-time later?+
Yes. If an embedded engineer becomes someone you want full-time, we have a clean conversion path — usually a small conversion fee, no surprise lockouts. We'd rather lose a long-running engagement to a happy permanent hire than create the kind of friction that makes great engineers want to leave the arrangement.
Do you sign NDAs and IP agreements?+
Yes — standard practice. Mutual NDA before any detailed brief, then a clean IP assignment in the engagement contract: everything our embedded engineer writes is yours, in your repos, under your accounts. No background IP claims, no clawbacks, no lock-in.
Ready when you are

Got a role you can't wait six months to fill?

Brief us on Monday. Shortlist by Thursday. Productive sprints inside two weeks.

Brief us on the roleGet a rate sheet