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Java team extension

Hire Java Developers With the Expertise to Boost Your Systems

Senior Java developers for hire who work in your repositories, follow your process and stay for the long term. You interview them before anything is signed, and your leadership keeps the backlog, the architecture and the release decisions.

Discuss your requirementsSee how it works

Systems our engineers have built

1,000,000,000
financial transactions in under an hourFastPost accounting platform · developed for LegerityFastPost case study
300,000,000
travel queries a dayThe hotel metasearch platform we helped buildHotel search case study
Nearly 10 years
of one long-term engagement with Legerity, evolving its accounting platformNathan Pesin, CTO, Legerity FinancialsFastPost case study
Working model
Engineers join your team under your technical direction and bring experience from the high-volume Java systems we have built.
Location
Direct employees in Poland, inside the EU; no subcontracting.
Term
Ongoing, typically a long-term cooperation; notice and staffing changes are agreed in the contract.
Commercial model
Monthly fee based on the named engineers and agreed roles.
Stack
Java 17 to 25, Spring Boot, Kafka, Hazelcast, Oracle Coherence and Apache Ignite, PostgreSQL, AWS and Azure.
How the team works

How Stratoflow developers work inside your team

Experienced Java engineers who adapt to the way your team already works, adding capacity without changing how you plan, review or release.

  • Engineers you meet before starting

    You review profiles and interview the proposed engineers, then agree the skills, responsibilities and team composition the work needs.

  • Your repositories and delivery process

    Engineers use your issue tracker, review practices and release process. Your team sets the priorities and owns architecture decisions.

  • Java experience for demanding systems

    Experience with Spring, Kafka, in-memory data grids, PostgreSQL and cloud platforms. Specialist skills are matched to the engineers available when the engagement starts.

  • A clear point of contact

    A Stratoflow lead handles onboarding, staffing and escalation, and agrees with you how progress is reviewed and knowledge documented.

Getting started

How to hire Java developers through team extension

From the first call to a working team, you decide who joins and how they work, with every term agreed before anyone starts.

  1. Discuss the gap

    We review your backlog, team, stack and constraints and agree the roles. If the work needs an agreed outcome rather than more people, we suggest a scoped project instead.

  2. Meet the proposed engineers

    You review profiles, interview candidates and choose who joins. Availability, working hours, start dates and the monthly fee are confirmed before signing.

  3. Onboard into your process

    Access, environments and a first task are set up with your technical lead, with a Stratoflow lead on hand. The first week shows whether communication and reviews work.

  4. Review delivery and plan handovers

    Progress is reviewed in your usual routines and demos. The team grows or shrinks with your roadmap under the agreed notice and handover terms.

  • We are very pleased with our partnership with Stratoflow and, as we continue to grow, we expect to increase the numbers of developers that work with us on our projects. They have proven to be very skilled and flexible. They're extremely reliable, and they have a very good company culture of their own, which gives them a real edge compared to other providers that serve more as production shops rather than thought partners and creative problem solvers.
    Andrew KennedyFounder and Managing Director, Tier 2 Consulting
Fee and responsibilities

Monthly fee and who directs the work

The monthly fee reflects the engineers, their seniority, any specialist skills and the commitment required. The proposal states the included coordination, working arrangements, leave cover and handover duties. Start dates depend on engineer availability and your onboarding requirements.

Your engineering leadership directs the work. Our lead handles onboarding, staffing and escalation, and the engineers work directly with your team. Delivery measures are agreed with you and fit your process.

Team extension works best when you have technical direction and a backlog that needs more people. If you need an agreed outcome delivered instead, we can scope a modernization or performance engineering project.

Engagement models

Team extension compared with staff augmentation and a scoped project

Java team extensionTypical IT staff augmentationScoped project
Who joins your teamStratoflow employees you interview firstUsually individual contractorsA team we staff and lead
Who directs the workYour engineering leadershipYour engineering leadershipWe do, against the agreed scope
Price modelMonthly fee for the named engineersHourly or daily rate per personTime and materials against a written ballpark
Best whenYou have technical direction and a backlog that needs more senior peopleYou need one skill for a short periodYou need an outcome delivered, with one team accountable
Practical questions

Questions before you hire Java developers

Can we interview the engineers?

Yes. You review the proposed profiles and interview candidates before agreeing the team. Replacement and transition arrangements are recorded in the contract.

How soon can engineers start?

A typical planning range is two to four weeks after an agreement, subject to availability, team size and onboarding access. We confirm proposed start dates during selection.

What working hours can we expect?

Engineers are based in Poland, and their working day overlaps most of the UK and European day. Working hours and overlap with teams in other regions are agreed before the engagement starts.

Who owns the code and intellectual property?

Work takes place in repositories you control. The agreement assigns ownership of the delivered work to you and records any third-party licensing requirements.

Can we change the team size?

Yes, subject to availability and the contract. Engagements are ongoing and typically long-term, so the team can grow or shrink with your roadmap; notice, scaling and handover terms are agreed before the engagement begins.

How is team extension different from a project engagement?

With team extension, your leadership owns priorities and technical decisions and our engineers work within your team. A scoped project establishes a defined implementation outcome, responsibilities and acceptance criteria.

Is this staff augmentation or team extension?

Both names describe adding engineers to your team. IT staff augmentation services usually place individual contractors; our software staff augmentation places Stratoflow employees with senior colleagues behind them, and we do not subcontract. We call it development team extension because the engineers stay: team extension services work when the people who learn your system are still there a year later, and our attrition is 7% a year.

Why hire Java developers in Poland rather than offshore?

When you hire Java developers from us you get nearshore software development in Poland. Poland is one hour ahead of London (CET), so the working day covers UK business hours in full and the morning on the US East Coast. Offshore Java developers can cost less per hour, and the trade is less time-zone overlap and more turnover; our attrition is 7% a year. If you would rather hand over a whole project than add engineers, that is Java outsourcing, which we run as a Java development engagement.

Further reading

Hiring guides from our engineers

All articles

Written by , Co-founder and CEO, Stratoflow. Published . Updated .

Next step

Tell us which roles you need to fill

Tell us about your application, current team and upcoming work. We will discuss suitable roles and availability.

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