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BigTree108

HR and recruiting software development services

HR and recruiting software development for HR tech companies, recruitment agencies, staffing firms and HR teams: applicant tracking systems, career sites, HR information systems, onboarding, time, attendance and payroll integrations, staffing agency platforms and AI in hiring, integrated with Workday, SAP SuccessFactors, BambooHR, Personio and other HR systems, with dedicated HR tech developers for your team or a product delivered end to end.

What we build for HR and recruiting

  • Applicant tracking

    Requisitions, job postings, candidate pipelines, interviews, scorecards and offers, with job distribution and sourcing integrations.

  • Career sites

    Fast, accessible career sites with job search, structured job data for search engines and short application forms.

  • HR information systems

    Employee records, org charts, absences and documents, built for you or integrated with Workday, SAP SuccessFactors, BambooHR, HiBob or Personio.

  • Onboarding and offboarding

    Contracts, e-signature, equipment, accounts and training started from one hire, and everything revoked on the last day.

  • Time, attendance and payroll

    Time tracking, shifts and leave feeding payroll providers such as ADP and Deel or local payroll, with approvals and an audit trail.

  • Staffing agency platforms

    Candidate and client CRMs, placements, timesheets and invoicing for recruitment and staffing firms, integrated with Bullhorn or built for your process.

  • AI in hiring

    CV parsing, matching and interview scheduling assistants, with a person making every hiring decision and the EU AI Act’s rules for recruitment built in.

Hire HR tech developers

  • Dedicated HR tech developers

    HR tech developers who join your team full time, work in your tools and process, and report to your lead. You interview them; we carry the Ukrainian contract, payroll, invoicing and leave.

  • HR software development projects

    A defined piece of HR software development with a scope, a fixed plan and a named lead on our side who owns the result and reports progress in your channels.

  • Ongoing HR software development

    HR software development as a continuing service: the same people every month, a backlog you prioritise, and hours you can see in our portal and on the invoice.

The dedicated team page explains how specialists join your team, and the outsourcing page covers project delivery, take-overs and how we charge.

Who works on your HR software development

  • Full-stack engineers

    HR platforms in .NET, Python, Node.js or PHP

  • Integration engineers

    HR system, payroll and identity integrations

  • Front-end engineers

    Career sites and employee portals

  • Business analysts

    Hiring, onboarding and payroll processes

  • QA engineers

    Permission, payroll and accessibility tests

Personal data treated as personal

HR systems hold some of the most sensitive data a company has, so salary, health and identity fields are encrypted, visible only to the roles that need them, and logged on every access, with retention and deletion rules applied automatically.

We run our own company on an HR platform we built, covering hiring, onboarding, contracts, time tracking, leave, compensation and invoicing, so the problems of HR software are ones we solve every month.

Other industries we build for

Industries overview

Questions about HR software development

Can you integrate with Workday, BambooHR or Personio?

Yes, through their APIs or a unified HR API such as Merge or Finch, so employee, absence and payroll data flows between systems without re-keying.

Can AI screen candidates?

It can help a recruiter, not replace one. Under the EU AI Act, AI that ranks or filters candidates is high-risk, so we build it with a person reviewing every decision, bias testing, logging and the documentation the Act requires.

How quickly can HR tech developers start?

When the right HR tech developer is available, the start is gated only by your interview and the NDA and IP assignment. Otherwise we run a search, which typically produces candidate profiles within two to three weeks, and nobody starts until you have said yes.

How do we hire HR tech developers through BigTree108?

Tell us the work, the seniority and the hours you need. We propose one or two people with their profiles, you interview them the way you would interview your own hire, and you sign one agreement with BIG TREE 108 LLC and receive one invoice a month.

Who owns the work they produce?

You do. Every specialist has a signed contract with BigTree108 that assigns all work product to the company, and our agreement with you assigns it onward. Code, designs and documents are delivered into your own repositories and tools, not kept where only we can change them.

Building HR or recruiting software?

Tell us the product, the HR systems it connects to and the work. You get an answer within one business day: candidate profiles or a plan for the work.

Email hello@bigtree108.com How we respond