State-Driven Workflow Marketplace System Project (Built on Ply.io)
2000 USDThis is a PLATFORM DEVELOPMENT PROJECT (not a recruitment post). We are building a multi-role service marketplace that will be implemented on Ply.io (mandatory) and deployed on Fly.io (mandatory).
What work must be completed:
design and implement a state-driven workflow marketplace in which the entire platform behavior is controlled by explicit state machines, including
(1) multi-role permission system for Platform/Service Provider/Client,
(2) service/task publishing, discovery, bidding and selection flow,
(3) workflow steps, statuses, and milestone management,
(4) escrow-based payment and milestone release strictly bound to state transitions,
(5) structured embedded dispute/arbitration flow that exists as a system structure (evidence capture, rule-based validation, resolution paths, escalation interface),
(6) continuous AI decision components as system components (not a simple chatbot or one-off API call) to support demand understanding/structuring, matching assistance, workflow routing decisions, and dispute classification.
the architecture must be modular and extensible so new service categories can be added without re-engineering the core.
Purpose of the project:
deliver a real, online, verifiable, and continuously extensible marketplace
platform where users can publish tasks/services,
providers bid,
work is executed through milestone workflows,
funds are protected via escrow,
disputes are handled by structured mechanisms,
enabling highly automated operation instead of manual customer-service-driven processes.
Target audience:
global service providers and clients across multiple everyday service categories who need transparent bidding, escrow-protected milestone delivery, and rule-structured dispute resolution within a platform workflow.
Evaluation standards:
we will evaluate results by whether
(a) the platform runs end-to-end on Ply.io and is deployable on Fly.io,
(b) all critical flows are truly state-driven with no manual/ad-hoc control,
(c) escrow and milestone payments are enforced by state transitions,
(d) dispute/arbitration is embedded as a workflow structure with evidence handling and clear resolution paths (not “human support”),
(e) AI participates as a continuous decision component for structuring/matching/routing/dispute classification,
(f) the system is modular, extensible, and stable enough to be used as the foundation for all future development.
Skills required:
State Machine
State-Driven Workflow
Workflow Engine
Finite State Machine (FSM)
Escrow System
Milestone-Based Payment
Escrow-Milestone Binding
Marketplace Platform
Multi-Sided Marketplace
Multi-Role System
Dispute Resolution System
Arbitration Workflow
Rule Engine
AI Decision Engine
AI Orchestration
Low-Code Platform
Ply.io
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5 days20 000 USD5 days20 000 USD
Have you considered the transformative power of a truly state-driven workflow on Ply.io? With extensive experience in modular architecture and AI integration, I can help build your marketplace from the ground up to ensure seamless, automated flows for escrow-based payments and dispute resolution. My focus is on creating a scalable, future-proof system—ideal for tailoring additional service categories without core disruption. Let’s collaborate to redefine efficiency and trust in platform operations.
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10 days2000 USD
176 10 days2000 USDGood afternoon! Thanks for the detailed project description. The scope and goals are clear, and the state-driven, workflow-centric approach makes sense for this type of marketplace. I’m comfortable working with FSM-based architectures, multi-role systems, escrow-milestone logic, and modular platform design. Ready to contribute to building a stable, extensible solution on Ply.io with deployment on Fly.io.
Respectfully yours, your programmer Maksim!
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10 days2000 USD
321 10 days2000 USDI am ready to complete your project with quality in code and beauty in design - quickly and efficiently. I have extensive experience in similar work. Feel free to contact me.
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29 days3900 USD
15075 32 0 1 29 days3900 USDGood day!
My name is Valentin, and I represent Arctic Web Agency. We are a team of experienced web developers who specialize in creating modern and effective web solutions for businesses. I can provide examples of our similar work in personal messages. We are ready to take your project to work!
Sincerely,
Arctic Web Team
Freelancehunt
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120 days25 000 USD
393 120 days25 000 USD⏳ Time Assessment
1) Minimum Viable Product (MVP)
What is included:
- basic roles (client/performer/platform);
- FSM for publication → bidding → selection → execution → milestones → completion;
- escrow + milestone release;
- basic dispute module (evidence collection, rule-based decisions);
- AI modules: task classification, query structuring, basic routing;
- deployment on Fly.io.
… Timeline: 8–12 weeks
(realistically — closer to 10–12, because FSM + escrow + arbitration = complex logic)
2) Full-fledged platform (Production-ready v1)
What is added:
- advanced arbitration with multi-level resolution paths;
- AI modules as permanent decision-components (not just API calls);
- modularity for adding new categories without changing the core;
- rule-engine for compliance and checks;
- analytics, logging, state transition audits;
- performance optimization and fault-tolerance on Fly.io.
Timeline: 16–20 weeks
3) Enterprise scale (as a basis for future services)
What is added:
- complete orchestration of AI (workflow routing, dispute classification, compliance scoring);
- expandable state-machines for each service category;
- modular payment pipelines;
- advanced dispute engine (rules, evidence, automated decisions);
- tools for moderation, risk scoring, anti-fraud;
- API for integrations.
Timeline: 24–32 weeks
💰 Budget Assessment
The estimate is based on the complexity of the FSM architecture, escrow logic, and AI components.
1) MVP
$25,000 – $40,000
2) Production-ready v1
$55,000 – $85,000
3) Enterprise scale
$100,000 – $160,000+
📌 Why such a price?
Because the project includes:
- a fully state-driven architecture, where each transition is logic, rules, checks;
- escrow tied to milestones, requiring flawless logic and security;
- structured arbitration, which is usually built only by large platforms;
- AI as a system component, not a “chat on the side”;
- modularity that allows scaling the platform without rewriting the core.
This is the level of Upwork/Fiverr/TaskRabbit, but with much greater automation.
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