MarTech that lands in the inbox.
Marketing technology software development from engineers who know where it breaks.
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Senior engineers
No juniors. No middlemen.
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Fixed price
Overruns are on us.
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Live in weeks
Weekly demos on staging.
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You own the code
100% of the IP, day one.
Marketing technology software development is building the tools marketing teams and agencies run on: outreach and campaign platforms, content publishing automation, SEO and analytics tools, lead enrichment and attribution. The hard parts are deliverability, third-party API limits and OAuth, queueing at volume and clean reporting data. Yarify, a senior team in Prague, has built a cold outreach platform, content automation publishing to five platforms, and SEO and AI-readiness audit tools.
Systems you do not control
MarTech depends on mailbox providers, social APIs and crawlers. We design for their failures.
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Deliverability
Warm-up, rotation, per-mailbox limits
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API fragility
Adapters, rate limits, token refresh
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Consent and suppression
Unsubscribes shared across campaigns
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Believable reporting
Deduplicated, clearly defined events
Martech software development we ship
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Outreach and campaign platforms
Sequencing, personalisation, mailbox warm-up, inbox rotation, reply detection and a unified inbox.
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Content automation
Generate, review, schedule and publish across social and video platforms through official APIs.
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SEO and AI-search tools
Technical, on-page, schema and AI-readiness audits with scored JSON and HTML reports.
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Lead enrichment and routing
Enrichment from your providers, scoring, deduplication and routing into the CRM.
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Attribution dashboards
Event pipelines from site, ads and CRM into reports your team and clients trust.
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Agency white-label tools
Multi-client workspaces, branded reports and roles. See SaaS development.
Deliverability is engineered
- SPF, DKIM and DMARC checked on mailbox connection
- Gradual warm-up for new domains and mailboxes
- Sending rotated across inboxes with daily caps
- Bounces and complaints handled immediately
- Campaigns pause automatically when reputation drops
- Suppression lists and consent records shared across campaigns
Martech products we have shipped
A cold outreach and campaign platform. Content automation publishing short-form video to five platforms on about an hour of maintenance a month. An SEO and GEO audit tool with scored reports.
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Cold Outreach That Stays Out of Spam
Custom cold outreach and email campaign platform: multi-step sequences, SPF/DKIM/DMARC checks, inbox warm-up and rotation, LLM-personalised first lines, reply detection and campaign analytics.
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Five Platforms, One Hour a Month
Internal platform for a marketing agency: generates short-form video from three inputs and publishes to YouTube, Instagram, Threads, Reddit and Telegram. Spring Boot, Next.js, MongoDB.
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One Audit Run, One Score, Two Reports
Custom audit tool that scores technical SEO, on-page SEO, schema markup and AI readiness in one run, then exports machine-readable JSON and a stakeholder HTML report.
Riskiest integration first
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Map dependencies · Week 1
Every provider, API and mailbox, with its limits, auth model and failure modes.
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Scope and fixed price · Week 1
Core workflow, integrations and reporting agreed in writing.
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Integrations before UI · Early build
Surprises happen in week two, not week ten.
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Product and monitoring
Daily workflow, reports and alerts on queue depth, API errors and token expiry.
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Ramp volume
Gradual increase in sending or publishing, then handover or a dedicated team.
What drives the cost
Number of platforms integrated, sending or publishing volume, AI generation and its per-unit cost, multi-tenancy for agencies, and reporting depth. Each new platform is its own adapter with its own quirks.
Market ranges are in the SaaS cost guide and AI cost guide. Our price is a fixed written quote.
Fixed price. We eat the overruns.
On fixed-scope martech builds, the quoted price for the agreed written scope is what you pay. If our estimate was wrong, the extra hours are our cost. Changes you request are quoted first.
How MVP builds workRelated services
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SaaS development
SaaS products built on solid foundations: multi-tenancy, Stripe subscriptions, auth and roles, admin dashboards and product analytics. Fixed quote for the first version.
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AI development
Production AI, not demos. LLM integration, RAG, document processing and AI features built with evaluations, human review and GDPR-aware data handling.
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Java developers
Senior Java and Spring Boot engineers for modular monoliths, Kafka, OAuth, enterprise integrations and Spring Boot upgrades. Monthly augmentation or fixed-price projects.
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SaaS development cost
What it costs to build a SaaS product in 2026: launch ranges, the SaaS-specific features that add hours (billing, multi-tenancy, SSO), region rates and running costs.
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SaaS
Multi-tenant SaaS products with Stripe billing, onboarding flows and churn analytics, built by senior engineers who own the code from schema to deploy.
Questions buyers ask us
Can you build a cold email outreach platform?
Yes, we have built one. Production outreach needs mailbox connection, warm-up, inbox rotation, per-mailbox limits, sequencing with reply detection, bounce handling, unsubscribes and suppression lists. A platform that lands in spam has no value, so deliverability comes first.
Can you automate publishing to social media platforms?
Yes. Our content automation platform publishes to YouTube, Instagram, Threads, Reddit and Telegram through official APIs with OAuth. Each platform has its own adapter, rate limits and token monitoring. It runs on about an hour of maintenance a month.
Do you build SEO and AI-search optimisation tools?
Yes. We built an audit tool covering technical, on-page, schema and AI-readiness checks with scored JSON and HTML reports, plus a deeper LLM and RAG-based audit. Internal agency tool or SaaS product, both work.
Is cold outreach software legal under GDPR?
B2B outreach can be lawful in many EU countries under legitimate interest, but rules vary by country and channel. That is a question for your legal adviser. We build the tooling that supports compliance: unsubscribes, suppression lists, source records and deletion.
How much does martech software development cost?
It depends on integrations, volume, AI usage and multi-tenancy. Market surveys put most MVPs at roughly $15k–$150k. Fixed written quote after a free 30-minute call, and we cover our own estimation overruns on fixed-scope work.
Can you add AI generation to our marketing tool?
Yes. LLM copy, personalisation and content generation with per-account cost tracking, prompt versioning, review queues and quality checks against approved examples.
Keep reading
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Cold Outreach That Stays Out of Spam
Custom cold outreach and email campaign platform: multi-step sequences, SPF/DKIM/DMARC checks, inbox warm-up and rotation, LLM-personalised first lines, reply detection and campaign analytics.
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Five Platforms, One Hour a Month
Internal platform for a marketing agency: generates short-form video from three inputs and publishes to YouTube, Instagram, Threads, Reddit and Telegram. Spring Boot, Next.js, MongoDB.
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One Audit Run, One Score, Two Reports
Custom audit tool that scores technical SEO, on-page SEO, schema markup and AI readiness in one run, then exports machine-readable JSON and a stakeholder HTML report.
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SaaS development
SaaS products built on solid foundations: multi-tenancy, Stripe subscriptions, auth and roles, admin dashboards and product analytics. Fixed quote for the first version.
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AI development
Production AI, not demos. LLM integration, RAG, document processing and AI features built with evaluations, human review and GDPR-aware data handling.
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SaaS
Multi-tenant SaaS products with Stripe billing, onboarding flows and churn analytics, built by senior engineers who own the code from schema to deploy.
Built by people who know where it breaks.
Book a free 30-minute call. We map your integrations and risks and give you a fixed price for the first version.