Outcomes Over Code: Full-Stack Solutions That Scale With You
Real Results Through Practical Development, Integration and Agile Leadership
Tilallinen & Tilaton Ohjelmointi Oy helps industrial and technology companies turn software from a burden into a competitive advantage. Led by Markus Rentto – a seasoned full-stack developer, Scrum Master and agile leader – the company brings over 15 years of hands-on experience delivering industrial-grade software, integrations and coaching. The approach is more than anything else, practical: the focus is on listening carefully to your challenges, then deliver tailored solutions that automate processes, improve collaboration and enable growth.
Lean, Effective Development Grounded in Your Goals
Whether you need a real-time dashboard, a cloud-connected prototype, or a smoother software development process, I deliver solutions that create measurable business value — not just code. From custom applications that eliminate manual work to agile coaching that gets your team back on track, the work I do is grounded in clarity, scalability, and results. Across everything I do, I aim to blend technical expertise with a practical mindset. You get solutions that work in the real world — and evolve as your needs grow.
Full-Stack Software Development
You need more than code — you need results. I build full-stack applications that streamline operations, connect systems, and turn data into insight — from real-time dashboards to custom ERP integrations — all with scalability and quality built in.
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Scrum Master & Agile Coaching
When teams stall, we get them moving. As part-time Scrum Master or Agile Coach, I bring structure, clarity, and momentum — introducing just enough process to boost delivery speed, cut confusion, and improve product quality.
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Prototyping & Proof-of-Concept Development
Got an idea but not sure it’ll work? I turn concepts into working prototypes in weeks — helping you validate feasibility, test with users, and win stakeholder support without heavy upfront costs.
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Software Architecture & System Integration
I don’t just deliver code — I deliver outcomes. From real-time dashboards to ERP integrations, I build scalable, cloud-ready tools that cut manual work, unify data, and surface insights that drive better decisions.
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Full-Stack Software Development
Build software that streamlines your operations and grows with your business.
Many of my customers need more than just code; they need concrete outcomes like real-time dashboards, production monitoring tools or custom integrations with ERP/MES systems. I design and implement complete applications – from user-friendly front-ends to reliable, scalable back-end services – that address these needs directly. Instead of listing technologies, I focus on the challenges at hand: reducing manual data entry, eliminating spreadsheet silos and providing timely insights so you can make better decisions.
- Outcome-first mindset: I aim to start by understanding your goals and pain points, then deliver a solution that automates workflows, reduces errors and provides clear business value. For example, whether you need a production monitoring dashboard or a custom data-visualization tool, I build systems that bring your data together so your team can focus on what matters most.
- Cloud-ready & future-proof: Using AWS or Azure, and proven patterns such as microservices when appropriate, the architectures scale with your workload. You won’t outgrow your software, and adding new features or integrating new machines won’t require a complete rewrite.
- Built-in quality: Automated tests, continuous integration and deployment pipelines, and proactive monitoring are part of every project. This means you get reliable releases and can evolve your system quickly without compromising stability.
In addition to these benefits, I draw on deep technical expertise. I’m are fluent in leading front-end and back-end technologies such as React, Angular, Node.js, Java and .NET, allowing me to choose the right combination for your project – whether it’s a web dashboard, a desktop application or an embedded control panel. My extensive hands-on experience with containerisation and microservices helps build cloud-native systems that are easy to deploy and maintain.
To add, I set up continuous integration, delivery and automated testing from day one so that development stays smooth and scalable.
Scrum Master & Agile Coaching
Make your projects run smoother and deliver value faster.
When development slows down or communication breaks, a part-time Scrum Master or Agile Coach can make a big difference. My goal is to organise your team’s workflow, run effective stand-ups and retrospectives, and remove impediments so your projects stay on schedule. Rather than preaching agile theory, I introduce just the practices you need and tie each change to tangible benefits – faster delivery, improved collaboration and higher product quality.
- Faster, clearer projects: By establishing clear backlogs and streamlined planning, I help your team eliminate bottlenecks and misunderstandings. This results in smoother sprints and on-time deliveries, even when multiple departments are involved.
- Practical agile adoption: I tailor Scrum, Kanban or hybrid approaches to fit your workflow. I explain the why behind each practice in plain language and link it to business outcomes, like shorter lead times or fewer last-minute surprises. The utilized agile methods reduce waste and save your company time and money.
- Team empowerment: Through workshops, one-on-one mentoring and hands-on coaching, I upskill your team so they can sustain improvements long after I’m gone. I measure success not by adherence to a framework but by how much easier your projects become.
To support these outcomes, I also bring technical know-how to your agile journey. I help teams adopt behaviour-driven development (BDD/ATDD) and co-author acceptance criteria and test scenarios early, ensuring requirements are clear and verifiable. This improves quality and aligns developers, testers and product owners. The provided coaching spans traditional software, PLC/robotics projects and mixed hardware-software environments, so I know how to tailor agile practices to different domains and technical stacks.
Prototyping & Proof-of-Concept Development
Test your ideas quickly - before committing big budgets.
Have an idea for a new sensor-to-cloud integration or data-analytics tool but aren’t sure it will work? I build working prototypes in a matter of weeks, giving you a tangible demo to validate feasibility, gather user feedback and secure stakeholder buy-in without a large upfront investment. I explain “proof-of-concept” in simple terms: it’s a small-scale version of your idea that proves it can work in practice.
- Speed & risk reduction: Rapid prototypes let you uncover technical hurdles and market interest early so you avoid costly missteps. You’ll know quickly whether an idea is technically feasible and worth pursuing before spending big budgets.
- Collaborative iteration: I work closely with you to understand the core of your idea, then build a throw-away prototype or MVP that demonstrates the concept in your context. Each sprint I refine the prototype based on feedback, ensuring every feature proves its value.
- Reusable foundations: The prototypes I build are not hacks. If validated, I evolve them directly into production-quality systems, shortening your time to market. I can also provide a demo application or technical feasibility report so you have clear deliverables and success metrics to share with stakeholders.
From a technical perspective, I have the breadth to build prototypes across cloud services, mobile applications, IoT integrations and data-visualisation tools. This versatility allows us to select the best languages, frameworks and platforms for your idea. I also design our prototypes with integration in mind: they can connect to your existing sensors, machines and databases, so when you move to full-scale development, the groundwork is already done.
Software Architecture & System Integration
Make all your systems talk - and prepare for tomorrow.
Many businesses struggle with fragmented systems: a production management system that isn’t connected to inventory, an old ERP that needs to talk to a new cloud app, or factory machines that can’t share data with the office. I design robust architectures and perform system integrations that create a unified, efficient IT environment. I avoid jargon like “API orchestration” and instead explain the benefit: ensuring your data flows where it’s needed, when it’s needed, without manual copying or costly silos.
- Unified data flow: I integrate ERP, MES, CRM and custom shop-floor systems into one coherent ecosystem. This eliminates manual exports and errors, and provides real-time information across sales, production and finance.
- Future-proof design: I choose the right technologies and design scalable architectures so your systems can handle growth and new requirements without major rework. Whether modernising a legacy monolith into microservices or architecting IoT and cloud systems, our work keeps your IT ready for tomorrow.
- Structured, low-disruption approach: My process begins with an audit of your existing systems and pain points. Next, I design an architecture or integration plan tailored to your processes and budget. Execution is carefully planned to minimise downtime, and I communicate clearly at every step. Because I have experience integrating manufacturing execution systems, PLCs and enterprise software, you can entrust your critical integrations to a team that understands both software and industrial operations.
Behind the scenes, I apply proven integration patterns such as RESTful APIs, message queues and event streams to ensure reliable data flow. My knowledge of popular ERP, MES and CRM systems means I can connect them efficiently and securely.
I design robust architectures – from high-availability microservice platforms to secure on-premises deployments – that balance performance, security and maintainability. I have hands-on experience transforming monolithic systems into modular services and incorporating IoT/edge devices into enterprise IT.
Explore Real-Life Projects
You may use the filter below to find the projects most relevant to you based on the categories.
Agile Coach & Fullstack Developer
- Azure DevOps, CI/CD pipelines, Confluence, Gherkin, Jira
Custom Manufacturing Automation Projects – Fullstack Developer & Scrum Master
- .NET Framework, Angular, C#, REST API, SQL, SQL Server
Integration & Web ERP – Fullstack & Integration Developer
- ActiveMQ, Play, Postgresql, REST, Scala
Large-Scale Integration Project – Scrum Master / Architect / Fullstack Developer
- .NET Framework, .NET8, Angular, Azure DevOps, C#, CI/CD pipelines, Docker, Gherkin, Jenkins, Jira, MQTT, OAuth 2.0, OpenAPI, REST API, SQL Server
Platform Development & Refactoring Initiative – Fullstack Developer
- .NET Framework, .NET8, Angular, C#, CI/CD pipelines, OpenAPI, REST API, SQL Migration, sql ser
Time tracking system – Lead Developer & Agile Master
- AWS, CI/CD pipelines, Kotlin, Postgresql, React, REST API, Spring Boot, SQL Migration
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