Fixed cost · Time & material · Dedicated team

Software Development Engagement Models for Custom Software & SaaS Projects.

QalbIT offers clear, battle tested engagement models for custom software, SaaS and digital transformation work. Whether you prefer fixed scope, flexible capacity or a long term product squad, we shape the engagement around your goals, risk profile and budget.

  • Founders and business owners who want cost clarity and predictable delivery before committing to a build.
  • CTOs and product leaders who need reliable capacity but want to keep architectural and technical decisions in their hands.
  • Procurement and finance teams comparing offshore software development engagement models and vendor options.

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Headquartered in Ahmedabad, India, partnering with clients across India, the UK, Europe and the Middle East.

Engagement snapshot

Core models
3+ Fixed cost, time & material, dedicated squads.
Typical initial term
8–12 weeks For project based engagements.
Retainer duration
3–12 months
Regions served
India, UK, Europe, Middle East

Comfortable overlap with your time zone.

Designed for teams who care how software work is structured, not just what gets built

The right engagement model depends on how clear your scope is, how fast you need to move and how much internal capacity you have. This page is for decision makers who want transparency on cost, responsibilities and risk before they commit to a build.

Founder or business owner

You are responsible for the outcome and the budget, and you want to avoid open ended engagements or surprise invoices.

How we help

We explain engagement models in plain language, share realistic budget ranges and outline what you can expect at each stage, so you can make confident decisions.

CTO, head of engineering or product lead

You own the roadmap and architecture, but you need reliable external capacity without losing control or compromising quality.

How we help

We align with your stack and standards, use your workflows where needed and agree upfront who owns architecture, reviews and releases under each engagement model.

Operations or non technical sponsor

You need better systems or automation but do not want to manage a large in house engineering team or chase multiple vendors.

How we help

We propose engagement models that fit your internal bandwidth, communication style and reporting needs so you can stay focused on running the business.

Procurement or finance

You compare vendors and contracts, and need clarity on risk, billing and how change requests are handled.

How we help

We document how each engagement model works in contracts and SOWs, including assumptions, change control and what is included or excluded in the agreed fees.

Common engagement problems we help you avoid

  • Vague proposals and open ended contracts that make it hard to predict total spend.
  • Engagement models that do not match the clarity of scope – leading to delays or rework.
  • Vendors saying “yes” to everything without explaining trade offs or risks.
  • Teams surprised by how change requests, bug fixes or new ideas are billed.
  • Lack of transparency on who owns what – scope, architecture, QA, releases and support.

Where engagement models apply

Software work we usually structure through these engagement models

Each engagement model can support different kinds of work. We help you map your needs to a model that keeps delivery predictable while leaving room for learning and change.

End to end project builds

Greenfield products, platform rebuilds or defined modules with clear functional scope and timelines.

Ongoing product development

Roadmap execution, iterative feature delivery and technical optimisation for live products.

Support, maintenance & optimisation

Bug fixing, small enhancements, dependency upgrades and performance work for existing systems.

Discovery, audits and proofs of concept

Short, focused engagements to clarify scope, validate ideas or audit existing systems before a larger build.

If your situation spans multiple areas – for example a rebuild plus ongoing product work – we often propose a hybrid engagement, starting with a fixed or semi fixed phase and then moving into a retainer or dedicated team.

How we work

A practical engagement process from first call to long term partnership

Regardless of the model you choose, we follow a clear process so you know what is happening, who is responsible and how decisions are made.

Short discovery or audit engagements usually run for 1–3 weeks, while project builds and product squads typically run for 8–12 weeks or more depending on scope.

  1. 1

    Discovery & context

    Understand your goals, constraints and current state

    We review your product or idea, existing systems, team structure, timelines, risks and budget expectations.

    Key outputs: Shared understanding of objectives, constraints and initial scope candidates.

  2. 2

    Model recommendation

    Propose the right engagement model or hybrid

    We map your needs to fixed cost, time & material, a product squad retainer or a hybrid, explaining pros, cons and cost implications.

    Key outputs: Documented recommendation with assumptions, sample team composition and budget ranges.

  3. 3

    SOW & onboarding

    Agree scope, responsibilities and cadence

    We prepare a statement of work, define roles on both sides, setup tools, repos and environments and confirm communication rhythm.

    Key outputs: Signed SOW and MSA, onboarding checklist, kick off call and first sprint or milestone plan.

  4. 4

    Delivery & reporting

    Deliver work in sprints or milestones

    The team ships features or tasks in small increments, with demos, progress reports and clear visibility into hours, scope and risks.

    Key outputs: Completed milestones or sprints, demo recordings, burn down / burn up views and updated backlog.

  5. 5

    Review & adjust

    Review outcomes and adjust engagement if needed

    We run regular reviews to evaluate delivery, budget burn, roadmap changes and whether the current model is still the best fit.

    Key outputs: Agreed improvements, potential scope adjustments and – where useful – a shift to a different or hybrid engagement model.

  6. 6

    Long term partnership

    Plan for the next quarter and beyond

    For long running engagements, we move into quarterly planning so you have predictable capacity and clear priorities.

    Key outputs: Quarterly roadmap, updated team composition and aligned expectations on velocity and outcomes.

Fixed cost, time & material and dedicated team models – the details

Each engagement model has trade offs around scope flexibility, budget predictability and speed. We help you choose the model that best fits your stage, risk tolerance and internal capacity.

Fixed Cost (Fixed Scope) Projects

Clear scope & deadlines

A defined scope, timeline and price for a project or phase. Best when we can stabilise requirements upfront and the goal is to deliver a specific outcome on a specific date.

Best for
Discovery projects, well defined MVPs, clearly bounded modules or redesigns with limited moving parts.
Typical budget
Budget agreed per phase or project based on detailed scope and assumptions.

Time & Material (T&M)

Evolving scope & priorities

You pay for the actual time the team spends delivering agreed priorities. Best when scope is evolving or when you want flexibility to re order work based on feedback.

Best for
Products in active discovery, roadmaps that change frequently, maintenance and optimisation work.
Typical budget
Monthly or sprint based budgets with agreed capacity and rates per role.

Product Squad Retainer / Dedicated Team

Product squad

A stable cross functional squad (or dedicated engineers) working as an extension of your team on a long term roadmap.

Best for
Scaling products, multi quarter initiatives, organisations that want predictable capacity without full in house hiring.
Typical budget
Monthly retainer based on squad size and seniority (for example, a mix of senior and mid level engineers).

Hybrid engagements are common – for example, starting with a fixed cost discovery or v1 build, then moving to a time & material or product squad model for ongoing evolution once the product is in market.

How engagement models play out in real projects

From clearly defined MVPs to evolving SaaS roadmaps and long-running platforms, we match the engagement model to scope clarity, risk and the maturity of your product.

Hellory – Smart reminder app MVP

Fixed cost project

The Hellory team wanted a well-defined MVP: Flutter mobile apps, Node.js / MongoDB API and a marketing site, all aligned to a specific launch date and feature set. We scoped a fixed price engagement with clear deliverables and acceptance criteria.

  • Stack: Flutter, Node.js / Express, MongoDB, REST APIs, Firebase Cloud Messaging, WordPress marketing site.
  • Outcome: Cross-platform mobile apps, backend API and website delivered to scope and timeline, with a structured backlog for post-launch improvements.
  • Impact: Gave the founders a production-ready MVP and predictable budget to validate product–market fit with early users.

Seekly – AI-powered quotation SaaS

Time & material

Seekly’s roadmap evolved quickly as the team experimented with different AI models, data sources and flows for buyers and service providers. Rather than freezing scope, we used a time & material model to support iterative discovery and weekly releases.

  • Stack: Laravel frontend and booking flows, Python services, AI APIs (Gemini, OpenAI and scrapers), REST integrations.
  • Outcome: Stable core SaaS with room to experiment on AI features, priced transparently based on actual engineering effort.
  • Impact: Allowed the founder to test ideas with real customers, prioritise what worked and drop what did not without renegotiating scope each time.

Ad Lunam Investments – Multi-project product squad

Product squad

Ad Lunam Investments needed a dependable engineering partner across multiple fintech and internal tools. We provided a dedicated QalbIT squad (backend, frontend and lead engineer) under a monthly retainer, working alongside their founder and internal stakeholders.

  • Stack: Laravel, JavaScript frontends, MySQL, reporting dashboards and integrations for investment and operations workflows.
  • Outcome: Stable delivery cadence across several products, shared ownership of architecture and predictable monthly costs for the client.
  • Impact: Enabled the team to ship new features and new tools faster, without building a full in-house engineering department or juggling multiple short-term freelancers.

Other startup MVPs we have partnered on

These are representative examples of how we match engagement models to product stage: fixed cost for well-defined MVPs, time & material when discovery and scope are evolving, and product squad retainers when you need a long-term, embedded team. Many clients move through more than one model as their product and organisation mature.

Tooling, communication and governance that support any engagement model

Good engagement models are backed by clear communication, reliable tooling and sensible governance. We keep our approach lightweight but disciplined so you always know what is happening.

Communication & ceremonies

Regular calls and async updates tuned to your time zone and team structure.

Weekly sprints Biweekly demos Sprint planning Slack updates Teams updates Email updates Decision log Architecture notes Scope changes

Project tracking & visibility

Tools that give you real time visibility into status, priorities and effort.

Jira boards ClickUp boards Project boards Tagged backlog Priority tags Time tracking Sprint reports Budget reports Milestone tracking

Code, environments & quality

Healthy engineering practices regardless of how the work is billed.

Git workflow Feature branches Pull requests Staging envs Smoke tests Regression tests Monitoring Error logging Uptime alerts

We are happy to work in your existing tools and repos where it makes sense, or we can propose a lightweight stack if you are starting from scratch. Technology stack · Services

Why teams trust QalbIT with long term software engagements

You are not just choosing an engagement model – you are choosing a partner. Our goal is to make it easy for you to understand how work is structured, where your money goes and how we share responsibility for outcomes.

Transparency on scope, cost and trade offs

We explain the pros and cons of each engagement model in your context instead of pushing a single way of working.

  • Clear proposals with assumptions, inclusions and exclusions spelled out.
  • Honest conversations when scope, risk or priorities change.

Founder led oversight & stable squads

You work with a compact, senior team, not a constantly rotating bench of anonymous developers.

  • Direct access to decision makers for architecture and engagement questions.
  • Squads stay on your account over time so they build deep product context.

IP, code and infrastructure you fully own

Everything we build for you – code, scripts, infrastructure definitions – is yours under the agreement.

  • Repositories in your organisation or transferred cleanly at the end of the engagement.
  • Documentation and handover so you are never locked in to a single vendor.

Security, NDAs and data handling

We treat your data, roadmap and customer information as confidential by default.

  • Standard NDAs, access control and least privilege principles.
  • Separate staging and production environments with restricted access.
“QalbIT is a fantastic dev partner. They provide quality work, good communication and go above and beyond. Working with them across multiple projects under a long-running engagement has been consistently strong.”

Joost Hesselberth, Founder, Ad Lunam Investments PTY LTD (South Africa)

“We have been working with the QalbIT team for a long time. They are very fast, reliable and have excellent communication – the engagement gives us continuity without needing a large in-house team.”

Ivo Kuipers, Solution Architect, Heuvelman Sound & Vision B.V. (Netherlands)

“QalbIT quickly integrated multiple payment platforms and kept communication clear throughout the project. Even after launch they remained involved with support, which made it easy to extend the engagement with confidence.”

Roshan Sethia, CTO, Contractor Plus, Inc. (USA)

FAQs · Custom software & teams

Frequently asked questions about software development engagement models with QalbIT

These are the questions founders, CTOs, operations and procurement teams usually ask when they compare fixed cost, time & material and dedicated team engagement models.

  • ✓ How fixed cost, time & material and dedicated team models work in practice at QalbIT.
  • ✓ When we recommend each engagement model based on scope clarity, timelines, risk and internal capacity.
  • ✓ How budgets, billing, communication and change requests are handled under each engagement model.

Have a question that is not listed here?

Share your roadmap or idea and we’ll help you pick the right engagement model, tech stack and starting point.

Contact our experts

What engagement models does QalbIT offer?

We usually work with three primary engagement models: fixed cost projects with clearly defined scope and milestones, time and material (T&M) for evolving scopes or ongoing roadmaps, and dedicated pods or long-term squads that plug into your existing team. In some cases we use a hybrid approach, starting with a fixed discovery or MVP phase and then shifting into a flexible, capacity-based model.

How do I decide between fixed cost and time and material?

Is there a minimum commitment for each engagement model?

Can we start with one engagement model and switch later?

How does QalbIT handle scope changes in a fixed cost project?

How are rates and budgets defined for time and material or pods?

How do you manage communication, tracking and reporting?

Who owns the code, IP and infrastructure across different models?

Can QalbIT work alongside our in-house team and existing vendors?

How do we choose the right engagement model and get started?

Next steps

Ready to choose the right engagement model for your software work?

Share where your product or project is today, what you want to achieve and your internal capacity. We will walk you through how QalbIT would structure the work, which engagement model fits best and what budget and timelines to expect.

Typically we respond within 24–48 hours with clarifying questions and a suggested engagement approach.