# SolaryxDev > SolaryxDev is an AI engineering firm for companies worldwide. It designs, builds and runs autonomous agents, private and sovereign models, evaluation and model operations, vision and voice systems, and the data and platforms beneath them, operated to the GDPR with data hosted in Germany by default, on one fixed price with a 12-month warranty while it hosts the system. Who you contract with: the UAE free zone company that trades as SolaryxDev, named in section 1 of the Terms of Service (https://solaryxdev.com/terms#1-who-these-terms-are-with). SolaryxDev works with companies worldwide. Every engagement is one fixed price against a signed scope, paid on milestones. Hosting is in Germany by default, in the UAE on request and quoted separately, or on the client's own servers. SolaryxDev gives no tax or legal advice. It has no partner, reseller or affiliate relationship with any model provider. Start here: [Home](https://solaryxdev.com/) · [Contact](https://solaryxdev.com/contact) · [Book a call](https://book.solaryxdev.com/admin/intro) · [Client login](https://portal.solaryxdev.com/login) Every page below is summarised in one sentence written from the page itself. Figures and dates are as published on each page, with its sources. ## Home - [SolaryxDev · Engineering for agents and private models](https://solaryxdev.com/): SolaryxDev is an AI engineering firm for companies worldwide. It designs, builds and runs autonomous agents, private and sovereign models, evaluation and model operations, vision and voice systems, and the data and platforms beneath them, operated to the GDPR with data hosted in Germany by default, on one fixed price with a 12-month warranty while it hosts the system. ## Solutions - [Custom AI development and engineering services](https://solaryxdev.com/solutions): SolaryxDev's fifteen capabilities in four disciplines (autonomous systems, models and assurance, data and platforms, strategy and operations), each sold as one fixed price against a signed scope, the order in which a company should start, and the systems of record it also builds. ### Autonomous systems - [Autonomous agent development company](https://solaryxdev.com/solutions/ai-agents): SolaryxDev builds autonomous agents that carry multi-step work through a company's business systems, inbox and calendar, log every step, and hold spending, deleting and first contact with a customer for a person, enforced in the tools outside the model. - [Company knowledge base and RAG development](https://solaryxdev.com/solutions/knowledge-base): SolaryxDev builds company knowledge bases on RAG that answer from a company's own documents in English and Arabic, cite the file and page for every answer, say "I do not know" below an evidence threshold and enforce each role's access at retrieval. - [Invoice processing automation](https://solaryxdev.com/solutions/document-automation): SolaryxDev automates supplier invoices and other business documents with rules for known layouts, models for the rest and a person on every exception, measured by straight-through rate and cost per document and failing closed on anything financial. - [Computer vision and OCR development](https://solaryxdev.com/solutions/computer-vision): SolaryxDev builds computer vision and OCR systems that read scans, forms and camera feeds into records, attach a confidence to every read, queue uncertain reads for a person and keep camera footage on site. - [Voice and conversation systems](https://solaryxdev.com/solutions/voice-ai): SolaryxDev builds voice and conversation systems that transcribe calls in English and Arabic, file summaries and tasks against the right customer record, measure accuracy on the client's own audio and hold outbound messages for a person. ### Models & assurance - [Private LLM and sovereign language models](https://solaryxdev.com/solutions/private-ai): SolaryxDev deploys open-weight models such as Llama, Mistral and Qwen on the client's own servers or on SolaryxDev hosting in Germany (operated to the GDPR), uses a hosted API only with written approval under no-training terms, and never lets client data train a model anyone else can reach. - [LLM evaluation and model assurance services](https://solaryxdev.com/solutions/ai-assurance): SolaryxDev builds evaluation sets from a client's real cases, wires them into a release gate and a model-upgrade test, monitors live traffic for drift, and maps the evidence to NIST AI RMF without claiming any certification. - [LLMOps and model operations in production](https://solaryxdev.com/solutions/llmops): SolaryxDev operates the AI systems it builds or takes over: per-run token and call budgets with alerts, evaluation on every change, drift monitoring on live traffic, a tested path for model upgrades, and incremental re-indexing, with no uptime percentage claimed. ### Data & platforms - [Data foundations and migration](https://solaryxdev.com/solutions/data-readiness): SolaryxDev cleans, migrates and reconciles company records before a model, a new system or an e-invoicing provider relies on them: scripted dry runs reconciled to the trial balance, tax-number and address cleanup for e-invoicing mandates such as the UAE's, and documents made ready for AI. Data warehouses are out of scope. - [Workflow automation and integrations](https://solaryxdev.com/solutions/workflow-automation): SolaryxDev connects the ERP, CRM, payment and mail systems a company already runs, so each figure is typed once. It uses rules where rules suffice and an AI model only for unstructured input, with idempotent writes, signed webhooks and money checks that fail closed. - [Custom web application development](https://solaryxdev.com/solutions/web-apps): SolaryxDev builds custom web applications (internal tools, client portals, workflow and integration systems) at one fixed price, with tests, reversible releases, a 12-month warranty while hosted, and the source code handed over on full payment. It does not build native mobile apps. - [Legacy application modernization and rescue](https://solaryxdev.com/solutions/modernization): SolaryxDev reads half-built or ageing business software, puts it under test, recommends in writing whether to rescue, refactor, replace or rebuild it, then does the work in reversible slices beside the running system at a fixed price per stage. It does not take on mainframe or COBOL systems. ### Strategy & operations - [Automation strategy and readiness advisory](https://solaryxdev.com/solutions/ai-consulting): SolaryxDev's AI strategy engagement takes two to three weeks, tests the strongest candidates on the client's own records, and ends in a written, fixed-price plan with build and monthly running costs, which the client owns and can build with anyone. - [Team enablement workshops on your own systems](https://solaryxdev.com/solutions/ai-training): SolaryxDev runs hands-on AI training for teams on their own documents and tools, from a half-day to six weeks, delivered remotely, ending in a written playbook and a follow-up clinic, with no certificates or accreditation claimed. - [Managed application hosting and support](https://solaryxdev.com/solutions/managed-services): After launch SolaryxDev, which operates to the GDPR, arranges hosting (Germany by default, or the client's servers) under a 12-month warranty on defects. The optional Premium Subscription adds monitoring, updates, restore-tested backups and response targets from 4 business hours, and extends the warranty up to 24 months. - [ERPNext implementation for CRM and ERP](https://solaryxdev.com/solutions/crm-erp): SolaryxDev builds the system of record that agents and models act on, using ERPNext, the open-source ERP under the GNU GPL v3 with no per-user licence: CRM, quotes, e-signed contracts and invoicing on one record from quote to ledger, UAE VAT through Frappe's UAE app, a migration reconciled in a dry run, and hosting in Germany or on the client's servers. - [UAE e-invoicing readiness for PINT AE](https://solaryxdev.com/solutions/e-invoicing): SolaryxDev, which is not an Accredited Service Provider and gives no tax advice, prepares UAE businesses' ERPs to issue PINT AE 1.0.4 e-invoices through the ASP they appoint: gap report, TRN and TIN cleanup, mapping, sandbox tests and rejection handling. - [Client portals and e-signature development](https://solaryxdev.com/solutions/client-portals): SolaryxDev builds client portals on a company's own ERP, where each customer reads a proposal, signs exactly what it read, pays the invoices raised from it and sends requests, seeing only its own records. Portal signatures are authenticated electronic-signature evidence under UAE Federal Decree-Law No. 46 of 2021, and SolaryxDev runs its own client work on the same kind of portal. ## Products - [Products we build and run ourselves](https://solaryxdev.com/products): SolaryxDev builds and runs four products under their own brands: Lineupo ticketing (Live), RefBooth master analysis (Free to use), Solaryx Studio small-business websites (Taking enquiries) and Bookesto booking (Early access). Its own calls, scheduling, mail and books are not for sale. - [Lineupo event ticketing, no cut of any ticket](https://solaryxdev.com/products/lineupo): Lineupo is SolaryxDev's live ticketing, guest-list and door product: buyers pay into the organiser's own account, there is no cut of any ticket on any plan, the door scans offline, and on Pro the same build runs on the organiser's own server. - [RefBooth free online LUFS and true peak checker](https://solaryxdev.com/products/refbooth): RefBooth is SolaryxDev's free web tool that measures a finished music master in thirteen readings (LUFS loudness, true peak, dynamics, stereo, spectrum) against eight delivery targets, with no account needed for a first report. Paid plans are announced and nothing is charged. - [Solaryx Studio websites for small businesses](https://solaryxdev.com/products/studio): Solaryx Studio is SolaryxDev's website service for small businesses: a site designed and built for one business, paid monthly in advance with no setup fee and no minimum term, the domain registered in the client's name and hosting in Germany. - [Bookesto appointment booking desk, early access](https://solaryxdev.com/products/bookesto): Bookesto is SolaryxDev's booking desk for service businesses, in early access: timezone-correct availability, database-enforced holds and English and Arabic guest booking run today. The merchant workspace and deposits are in build, and pricing is unpublished. ## Industries - [Industry-specific software for ten trades](https://solaryxdev.com/industries): SolaryxDev's industries hub lists what it builds for ten trades (clinics, events, professional services, real estate, accounting firms, trading, logistics, construction, manufacturing, retail and e-commerce): intelligent systems on four foundations every trade shares, the record, the documents, the schedule and the money, described as work for the trade rather than a client list. ### Services - [Clinic management software and billing](https://solaryxdev.com/industries/clinics): For clinics, SolaryxDev builds billing on ERPNext, a patient portal, reminders and Arabic and English call summaries around the clinic's own medical record system, keeps the patient data of UAE clinics inside the UAE, does not connect to NABIDH, Malaffi or Riayati, and takes on no clinical decision-making. - [Event ticketing and venue software](https://solaryxdev.com/industries/events): For events and venues, SolaryxDev offers Lineupo (ticketing, guest lists and offline door scanning, no cut of any ticket, buyers pay the organiser's own account) and builds settlement, promoter splits, sponsor contracts and refund workflows around it at a fixed price. - [Professional services automation software](https://solaryxdev.com/industries/professional-services): For consultancies, agencies and professional firms, SolaryxDev builds one record on ERPNext from which the proposal, the browser-signed contract, milestone, retainer or timesheet invoices, change orders and a client portal are generated, with a knowledge base over past proposals and contracts. SolaryxDev runs its own studio on the same setup. - [Property management software for landlords](https://solaryxdev.com/industries/real-estate): For landlords and property managers, SolaryxDev builds one record per unit, lease and tenant on ERPNext, with leases read and signed in the browser, a tenant portal, recurring rent invoices and reminders, calls summarised by unit, and maintenance requests as tracked jobs. Tenancy registration, such as Ejari or Tawtheeq in the UAE, stays with the client. - [Accounting firm automation and e-invoicing](https://solaryxdev.com/industries/accounting-firms): For accounting and audit firms, SolaryxDev automates the firm's own desk with a client document portal, field capture and an archive that answers with its source cited, and does PINT AE readiness on UAE clients' systems (gap report, master data, mapping, ASP connection) while the firm keeps all tax advice. It is not an ASP and takes nothing from any ASP. ### Industry & supply chain - [Document matching for trading and distribution](https://solaryxdev.com/industries/trading): For trading and distribution businesses, SolaryxDev reads supplier documents in Arabic and English into fields, automates three-way matching with a human queue below a confidence threshold, implements ERPNext underneath (price lists, batches, stock reservation, landed cost) and, for UAE businesses, prepares invoicing for PINT AE without being an ASP. - [Logistics and freight document automation](https://solaryxdev.com/industries/logistics): For logistics and freight businesses, SolaryxDev reads bills of lading, airway bills, packing lists and delivery orders into fields, checks them against each other, captures proof of delivery on a driver's phone, matches carrier invoices, and connects to customs or port systems only where they offer an API or structured export. - [Construction contract and margin control](https://solaryxdev.com/industries/construction): For contractors, SolaryxDev reads subcontractor licences and insurance into fields and chases them before expiry, and keeps one record per contract on ERPNext: numbered, e-signed variations, progress claims from measured work, and retention tracked from deduction to release (mapped to FIDIC Sub-Clauses 14.3 and 14.9 where used). It takes on nothing life-safety critical and does not integrate with scheduling or design software. - [Manufacturing traceability and line inspection](https://solaryxdev.com/industries/manufacturing): For manufacturers, SolaryxDev keeps batch and serial traceability, multi-level BOMs, work orders, job cards, production planning and quality inspection on one production record (ERPNext manufacturing), and adds edge computer vision for counting, labelling and visible defects, with no PLC, SCADA or machine-safety work. - [Retail and e-commerce automation](https://solaryxdev.com/industries/retail-ecommerce): For retailers and online stores, SolaryxDev builds WhatsApp and web-chat assistants that answer order, stock and policy questions from the store's own records in English and Arabic and never message a customer first, plus automatic reconciliation of payments, stock, returns and cash on delivery. ## Insights - [Buyer guides: agents, private LLMs and RAG](https://solaryxdev.com/insights): SolaryxDev Insights: unsponsored buyer guides on models in production, agent evaluation and cited retrieval, plus specialist guides on ERPNext, electronic signatures and UAE e-invoicing, built on primary sources where they exist, with every claim linked to its source, grouped as Models in practice, Compliance & systems, and Tools & references. ### Models in practice - [Evaluating an autonomous agent before it acts](https://solaryxdev.com/insights/how-to-evaluate-an-ai-agent): A SolaryxDev guide to evaluating an AI agent before it acts in production: a scenario set graded on outcomes, refusal and injection cases, repeated runs measured by pass^k, a two-week shadow run with human approval, and a release with limits, with spending, deleting and first customer contact held outside the model. - [Self-hosted LLM vs API: cost and data residency](https://solaryxdev.com/insights/private-llm-vs-api): A SolaryxDev guide to choosing between a self-hosted LLM and a model API: a cost worksheet the reader fills with their own volumes, what OpenAI, Anthropic and Google do with API data, the UAE PDPL points on transfers (general information, not legal advice), Arabic quality, licences, and how to keep the choice reversible. - [Enterprise RAG that cites its sources](https://solaryxdev.com/insights/rag-that-cites-its-sources): A SolaryxDev buyer's guide to company knowledge assistants built on retrieval-augmented generation: why retrieval reduces but does not remove made-up answers, how claim-level citations and a refusal threshold make answers checkable, why access must be enforced at retrieval, and how to measure quality on questions your own staff write. - [Straight-through processing rate for invoices](https://solaryxdev.com/insights/document-automation-straight-through-rate): A SolaryxDev guide to the straight-through processing rate for supplier invoices: how to define and measure it, the worked arithmetic showing why 98% field accuracy can leave 60% of documents for review (illustration), dated Ardent Partners benchmarks (USD 9.90 average cost per invoice in the 2026 edition), and how to keep the rate auditable with a measured false-post rate. ### Compliance & systems - [UAE e-invoicing readiness checklist for PINT AE](https://solaryxdev.com/insights/uae-e-invoicing-readiness-checklist): A UAE e-invoicing readiness checklist in eight steps, built on the Ministry of Finance's rules: scope, TIN-based identifiers, a gap analysis against the 51 mandatory tax invoice fields, master data, scenario mapping, one ASP onboarded through EmaraTax, testing of the whole loop and go-live obligations. - [UAE e-invoicing timeline and deadlines](https://solaryxdev.com/insights/uae-e-invoicing-timeline): Every UAE e-invoicing date from the Ministry of Finance decisions, with live countdowns: ASP appointment by 30 October 2026 and go-live on 1 January 2027 for revenue of AED 50 million or more, then 31 March and 1 July 2027 for smaller businesses, and 1 October 2027 for government entities. - [Electronic signatures in the UAE: when they bind](https://solaryxdev.com/insights/electronic-signatures-uae): Under UAE Federal Decree-Law No. 46 of 2021 an electronic contract keeps its validity, and a qualified electronic signature equals a handwritten one. The Decree-Law lists no excluded documents but defers to other laws and authorities, ADGM excludes powers of attorney, wills, real estate and notarised documents, and UAE PASS SOP3 accounts sign at the qualified level. - [How to choose an e-invoicing ASP in the UAE](https://solaryxdev.com/insights/how-to-choose-an-e-invoicing-asp): How to choose a UAE e-invoicing Accredited Service Provider, from a firm that resells none: use the Ministry of Finance register, know what accreditation under Ministerial Decision No. 64 of 2025 already proves, and test ERP fit, product ownership, full price, rejection handling, outages, data storage and exit before signing. - [ERPNext and UAE e-invoicing: the PINT AE gap](https://solaryxdev.com/insights/erpnext-uae-e-invoicing): ERPNext has no native UAE e-invoicing on 23 September 2026: its UAE module covers VAT fields and the VAT 201 report, ERPGulf's MIT-licensed uae_erpgulf app adds validation and structured invoice data, and master data, mapping and the ASP connection remain implementation work. - [ERPNext vs Odoo for UAE SMEs: cost and VAT](https://solaryxdev.com/insights/erpnext-vs-odoo-uae): An ERPNext versus Odoo guide for UAE SMEs from an ERPNext implementer that states its bias. ERPNext suits businesses that want no per-user licence, full source and self-hosting. Odoo suits those that want app breadth, partners, polish and deeper UAE tax reports. Neither documents native PINT AE e-invoicing on 23 September 2026. ## Engineering - [Engineering standards: how we build and ship](https://solaryxdev.com/engineering): SolaryxDev's software engineering standards: every change ships with the test that proves it, the full suite passes before any release, each release starts beside the live version and goes back in one command, money checks fail closed, each client has its own boundary, and a check that cannot run counts as a failure. - [Release gate: blue-green deployment and rollback](https://solaryxdev.com/engineering/release-gate): SolaryxDev's release gate: the full automated suite must pass (2,584 of 2,584 checks on the release recorded 10 September 2026), every client document must render with every value present, the build must be ahead of what is live, and a blue-green deployment makes going back one command. - [LLM guardrails: what a model may never do alone](https://solaryxdev.com/engineering/guardrails): SolaryxDev's LLM guardrails: spending money, deleting records and first contact with a customer are separate actions in deterministic code outside the model, held for a named person to release, so no prompt or injected document can argue past them. The same outbox, refund and fail-closed payment gates run SolaryxDev's own platform. - [Models and technology radar: what we build on](https://solaryxdev.com/engineering/radar): SolaryxDev's models and technology radar, dated 23 September 2026: Anthropic Claude and OpenAI GPT in use, Google Gemini and open-weight Llama, Mistral and Qwen on trial, Arabic-first Falcon-H1 Arabic and Jais 2 on watch, and ERPNext, Node.js, PostgreSQL/MariaDB, Stripe, isolated containers and Borg underneath. Models are chosen per job and named in each proposal, and SolaryxDev holds no partner or reseller tie to any provider. ## Company - [About SolaryxDev: who builds your system, and how](https://solaryxdev.com/company): SolaryxDev is a small engineering firm working with companies worldwide. It builds and runs autonomous agents, private models and the data they depend on, the person who scopes the work builds it, and the company runs on the stack it sells. ### About - [Software development contract terms and warranty](https://solaryxdev.com/commitments): SolaryxDev's contract commits to one fixed price paid on milestones, a warranty of 12 months hosted (up to 24 with the Premium Subscription, 90 days self-hosted), hosting in Germany by default, source code for paid work owned by the client, and no reseller ties to any vendor. - [Our work: software in production](https://solaryxdev.com/work): SolaryxDev's work in production today is its client portal, a release gate that passed 2,584 of 2,584 checks on 10 September 2026, restore-tested backups, one isolated container per client and its own books on ERPNext, alongside four products of its own (Lineupo, RefBooth, Solaryx Studio, Bookesto). Client names are withheld until each client agrees in writing. - [Data protection and security, run to the GDPR](https://solaryxdev.com/security): SolaryxDev operates to the GDPR: it isolates each client system in its own container, database and credentials, hosts in Germany by default (the UAE on request, or the client's servers), acts as processor only on the client's instructions, releases reversibly, proves backups by restoring them under a paid plan, and holds no ISO 27001 or SOC 2 certification. ### Working with us - [Software development process in five steps](https://solaryxdev.com/process): The SolaryxDev software development process runs in five steps: a free 30-minute call, a fixed-price proposal signed in the browser, a milestone build followed in the client portal with 14 days to test each milestone, a launch beside the old release with one-command rollback, and a warranty of 12 months while SolaryxDev hosts the system. - [Fixed-price custom software development](https://solaryxdev.com/pricing): SolaryxDev practises fixed-price software development: one total against a signed scope, a deposit on signature and then milestones, never hourly for a build, each change of scope as a numbered change order approved in writing, and the warranty, tests and source code included in the price. - [Custom software FAQ: cost, code, hosting](https://solaryxdev.com/faq): SolaryxDev's custom software FAQ answers what buyers ask before they sign: one fixed price per scope, code owned by the client once paid, hosting in Germany by default, a 12-month warranty while SolaryxDev hosts it, no training on client data, and no irreversible AI action without a person. - [Book a free 30-minute consultation call](https://solaryxdev.com/book): Book a free 30-minute online consultation with SolaryxDev in the calendar at solaryxdev.com/book (the same calendar is at book.solaryxdev.com/admin/intro). You speak to the engineer who would build the system, and the call ends with a written scope and one fixed number to follow, or a 'not yet' with the reason. - [Contact SolaryxDev: talk to the engineer who builds it](https://solaryxdev.com/contact): Reach SolaryxDev through the contact form at solaryxdev.com/contact, which a person reads and answers, or book a free 30-minute online call with the engineer who would build the system. Existing clients use the client portal. ## Optional - [Legal notice](https://solaryxdev.com/legal): Legal notice for solaryxdev.com: company details, contact, responsibility for content, liability, copyright and dispute resolution for SolaryxDev. - [Privacy](https://solaryxdev.com/privacy): How SolaryxDev collects, uses, keeps and protects personal data from its website, client portal, WhatsApp and calls, and the rights you have. - [Terms](https://solaryxdev.com/terms): The terms for using solaryxdev.com, and the general framework for engagements with SolaryxDev: proposals, fees, IP, liability and governing law. - [Cookie policy](https://solaryxdev.com/cookies): What solaryxdev.com stores in your browser (only your cookie choice), how its cookieless Umami analytics works with your consent, and how to change it. - [Accessibility](https://solaryxdev.com/accessibility): How solaryxdev.com works toward WCAG 2.2 AA: keyboard use, contrast, reduced motion and pages that work without script, the known limits, and how to reach us.