Hire Java Developers Who Join Your Team and Stay
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.
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
- 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 our developers work inside your team
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.
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.
How to hire Java developers through team extension
Discuss the gap
We review your backlog, current team, stack and delivery constraints, decide together whether more engineers fit the work, and agree the roles.
Meet the proposed engineers
You review profiles and interview candidates. Availability, working-hours overlap, start dates and the monthly fee are confirmed before signing.
Onboard into your process
Access, environments and a first task are set up with your technical lead. The first week shows whether communication, review and release practices work.
Review delivery and plan handovers
Progress is reviewed through your usual delivery routines and demos. Staffing changes and knowledge transfer follow the notice and transition terms in the agreement.
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.
Team extension compared with staff augmentation and a scoped project
| Java team extension | Typical IT staff augmentation | Scoped project | |
|---|---|---|---|
| Who joins your team | Stratoflow employees you interview first | Usually individual contractors | A team we staff and lead |
| Who directs the work | Your engineering leadership | Your engineering leadership | We do, against the agreed scope |
| Price model | Monthly fee for the named engineers | Hourly or daily rate per person | Time and materials against a written ballpark |
| Best when | You have technical direction and a backlog that needs more senior people | You need one skill for a short period | You need an outcome delivered, with one team accountable |
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.
When you need an agreed project outcome
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.