12 Best Golang Development Agencies in Croatia to Watch

Finding a Golang development agency in Croatia that balances expert Go engineering with reliable delivery and ongoing support can be difficult for product and engineering leaders. Buyers should compare areas such as Go-specific technical depth, production deployments and DevOps, code quality and testing practices, domain and portfolio relevance, team scalability and retention, communication and time-zone overlap, security and compliance, and pricing and contracting models.

SoftPro is featured as the international partner leading this list and serves buyers in Croatia and across the region. Use the agency comparisons that follow to evaluate capabilities, engagement models, and practical fit for your Golang projects.

1. SoftPro

SoftPro is the featured international partner for this list of Golang development agencies, delivering EU-based engineering from Warsaw, Poland to clients across Croatia and the wider region. The company engages startups, small and medium-sized enterprises and corporate product teams for backend system builds, cloud projects and long-term application support.

SoftPro brings hands-on experience with, .NET Core and C#, and uses Microsoft Azure for cloud-native builds and platform modernizations. The team conducts lift-and-shift migrations, containerization and enterprise CMS integrations while providing ongoing maintenance and platform modernization services.

Key Highlights

• Over 20 years of combined team experience across delivered projects and engagements.
• Public site includes a Croatian language option, indicating readiness to work with Croatian clients and stakeholders.
• Practical AI work: integration of large language models, implementation of RAG architectures and deployment of ML solutions tied into ERP and CRM systems.
• Frontend and full-stack capabilities with React and for responsive web applications and client portals.

Services

• Custom Software Development
• Web Application Development
• Cloud Development and Migration
• AI and Machine Learning Solutions

Contact Information

Website: soft-pro.pl

Phone: +48 571 282 759

Address: Poland, Warsaw, Mazowieckie Voivodeship, 13 Erasmus Ciołka St. 401

LinkedIn: www.linkedin.com/in/kyrylo-o

2. Gauss

Gauss builds production-grade backend systems using Golang as a core language to power cloud-native web and mobile platforms. The company focuses on scalable, containerized services and AI-enabled integrations that support enterprise and public-sector deployments.

The team pairs an in-house Gauss Reflect development framework with modern DevOps toolchains to shorten time-to-market for resilient backend services. Their delivery model emphasizes cross-platform front ends, automated cloud deployments, and integration-ready APIs for complex enterprise workflows.

Key Highlights

• Founded in 2012 and grown into a multi-office Croatian development firm.
• Maintains ISO 9001 and ISO 27001 certifications for quality management and information security.
• Publishes a commercial product family under "Gauss Box" that includes ERP, CRM, DMS, eCommerce, and project management modules.
• Recognized on Clutch with multiple category awards for software, eCommerce, and government development services.

Services

• Golang backend development
• Cloud-native & Kubernetes
• AI & ML integration
• Cross-platform mobile apps (Flutter)

Contact Information

Website: gauss.hr

Email: info@gauss.hr

Phone: +385 95 3429600

Address (Osijek): Ul. Svetog Leopolda Bogdana Mandića 111 O 31000 Osijek

Address (Zagreb): Ul. Roberta Frangeša Mihanovića 9 10000 Zagreb

3. Volito

Volito is a boutique software development company based in Zagreb, Croatia, operating since 2004. The firm assembles dedicated software teams and delivers comprehensive software projects across front-end, back-end, and mobile technologies.

They list Golang among their backend technologies and use dedicated teams to staff and execute mid-to-large engineering engagements, making them a practical choice for Go-based backend and microservices work.

Key Highlights

• The firm employs a team of 70+ people covering frontend, backend, and mobile disciplines.
• Their technology stack pairs Golang with cloud platforms AWS and Azure for scalable deployments.
• Clients named on the site include Unisot, Jodacare, and Basketball Network.
• Project focus areas listed on the site include Blockchain, Cryptocurrency, Embedded software, IoT, and Data Science.

Services

• Dedicated software teams
• Golang backend development
• Embedded software
• Data science & machine learning

Contact Information

Website: volito.digital

Phone: +385 91 2844 288

Phone: +49 176 2558 8637

Email: office@volito.digital

4. CROZ

CROZ is a Croatian software engineering firm that designs and delivers enterprise-grade software, data and AI platforms. The company combines product engineering, integrations and operations to modernize legacy systems and launch cloud-native services.

Its practice emphasizes cloud-native architectures, API-first integrations and infrastructure automation, which align with backend work that benefits from compiled, high-performance languages and efficient concurrency models. That delivery focus and experience in scaling data-driven platforms make CROZ a relevant pick for a list of Golang development agencies in Croatia.

Key Highlights

• CROZ was named an OpenAI partner in company news.
• CROZ joined the Claude Partner Network according to site announcements.
• The site displays an IBM Gold partner badge among its technology partners.
• CROZ organizes the QED conference, listed on the site as QED 2026 Annual BizTech conference.

Services

• Strategy & Service Design
• Software, Data & AI Engineering
• Operations & Managed Services
• Infrastructure Automation

Contact Information

Website: croz.net

Address: Lastovska 23, 10000 Zagreb, Croatia

Address: Aschauer Str. 30, 81549 München, Germany

Address: Alpbach 539, 6236 Alpbach, Austria

5. minus5

minus5 builds cloud-based sports betting platforms and related products for operators, delivering scalable and distributed back-end systems alongside web and native mobile front ends and retail terminals. The company develops modular, continuously released software for sportsbook operations, account management, statistics and virtual games tailored to operator environments.

The company emphasizes open-source, cloud-native architecture and high-performance delivery practices that support real-time workloads, which aligns with the technical demands that often lead teams to use Golang for low-latency, high-throughput services.

Key Highlights

• Platform has been in production for over 15 years at SuperSport, the largest betting company in Croatia and the region.
• The system handles up to half a million betting slips per day and supports more than 20,000 concurrent users.
• Site displays Betradar live and pre-match certification badges referencing 2017–2018.
• Careers page lists Go, Docker, AWS, PostgreSQL, Nomad, and Terraform among the technologies used by the engineering teams.

Services

• Sportsbook
• Score
• Lotto
• Virtuals

Contact Information

Website: minus5.hr

Phone: +385 1 6445 925

Email: info@minus5.hr

Address: Ulica Josipa Marohnića 1, HoB, 8th floor, 10000 Zagreb, Croatia

Address (Osijek): Vukovarska ulica 31, Eurodom, 10th floor, 31000 Osijek, Croatia

Address (Split): Ulica Zrinsko Frankopanska 64, Globus Centar, 3rd floor, 21000 Split, Croatia

Address (Čakovec): Športska ulica 6, MTC - multimedijalni centar, 1st floor, 40000 Čakovec, Croatia

6. Crossvallia

Crossvallia is a Croatia‑headquartered IT consulting and development company that designs, develops, and maintains heavy‑duty, resilient solutions for high‑volume websites and enterprise applications. They position themselves around system‑level engineering and long‑running production services.

The team emphasizes secure GNU/Linux services and modern deployment practices, and their published technologies show experience with compiled languages and container tooling; this suggests capability to support performance‑driven backend projects often implemented in Go, which is an inference based on the company’s technology list.

Key Highlights

• The technologies page explicitly lists C, Crystal, Docker, Nginx, PostgreSQL, and Redis among their core tooling.
• Security services mention Payment Card Industry (PCI) compliance and security advisory capabilities.
• The firm is headquartered in Croatia and maintains offices in Zagreb, Rijeka, and Sarajevo.
• Crossvallia states it operates content and application delivery networks and offers protections against web‑based attacks and DDoS.

Services

• Advanced Infrastructure
• Security
• IT Service Management
• Cloud and Data Center

Contact Information

Website: crossvallia.hr

Phone (Zagreb): +385 1 5571 038

Phone (Sarajevo): +387 62 793 630

Email (Zagreb): info@crossvallia.hr

Email (Rijeka): info-rijeka@crossvallia.hr

Email (Bosnia): info@crossvallia.ba

Address (Zagreb): Ul. Grada Vukovara 269A

Address (Rijeka): Prolaz M. K. Kozulić 2

Address (Sarajevo): Alipašina 45a

([crossvallia.hr](https: //crossvallia.hr/))

7. Rentlio

Rentlio is a Croatian hospitality‑tech SaaS company that delivers a cloud property management platform combining property management, channel synchronization and a direct booking engine for vacation rentals, property managers and hotels. The platform serves professional operators at scale and manages more than 18,000 accommodation units across over 40 countries.

The company builds and ships product from an in‑house development organization headquartered in Zadar with remote teams across Croatia, making Rentlio a representative client profile for backend engineering shops that build high‑volume, integration‑heavy SaaS systems.

Key Highlights

• Public REST API (currently version v1) available at with JSON responses and no separate sandbox; developers can use a demo property for testing.
• API limits include a maximum request size of 1MB, a rate limit of 15 requests per second and 10,000 requests per hour key.
• Channel integrations synchronize with major OTAs such as, Airbnb and Expedia and advertise properties on more than 100 online channels.
• Booking Engine supports online payments, Stripe, WSPay, M2Pay and Worldline.

Services

• Rentlio One
• Rentlio Plus
• Rentlio Pro
• Rentlio Pay

Contact Information

Website: rentl.io

Phone: +385 91 611 28 95

Phone: +385 91 611 2894

Email: sales@rentl.io

Email: support@rentl.io

Email: marketing@rentl.io

Email: integrations@rentl.io

Email: careers@rentl.io

Email: hello@rentl.io

Address: Zadar, Croatia

8. GoodCode (Dobar Kod)

GoodCode (Dobar Kod) is a Zagreb-based software studio that builds advanced web applications and production APIs for data-heavy products. The studio focuses on shipping backend tools and published services that support data extraction, pricing feeds, and automation.

The team publishes both open-source and commercial tools, operates privacy-first mobile apps, and collaborates with clients from product discovery through long-term engineering partnerships.

Key Highlights

• GoodCode maintains Cijene, an open-source REST/JSON API providing current and historical pricing data from Croatian retail chains.
• The team publishes MarkShot, a Website-to-Markdown API designed and optimized for use with LLMs and retrieval-augmented generation pipelines.
• GoodCode developed Troško, a privacy-first mobile app that extracts receipt data using on-device AI.
• The site lists the company legally as Dobar Kod d.o.o. and publishes registration identifiers (OIB: 47027797459, MB: 2608308).

Services

• Open-source API products
• LLM and web-content tooling
• On-device ML mobile apps
• Team augmentation

Contact Information

Website: goodcode.io

Email: info@goodcode.io

Address: Dobar Kod d.o.o. · IV Trokut 10a, 10020 Zagreb, Croatia

9. Sedam IT (SedamIT)

Sedam IT is a Zagreb-based ICT company that designs and delivers enterprise software, product platforms, and systems integrations for public institutions and large Croatian businesses. The firm combines in-house product development with vendor solution implementation and long-term support for clients across regulated and high-availability environments.

Sedam IT practices cloud-native software development and end-to-end delivery, which positions the company as a relevant partner for scalable backend and infrastructure projects commonly assigned to teams working with compiled, server-side languages and containerized deployments.

Key Highlights

• Works with major Croatian clients including Mercury Processing, INA, Erste banka, FINA, A1, and Hrvatska pošta.
• The Sedam kontakt centar is based on Cisco Unified Contact Center Enterprise and includes components developed by Sedam IT.
• Sedam IT founded internal startups Paldesk, Matison, and 7Pay and operates subsidiary Lamaro Digital.
• The company participates in EU-funded innovation projects, including IRI2 SOC4.0 and a machine-learning proof-of-concept for wind-power prediction.

Services

• Sedam CRM
• Sedam kontakt centar
• eBox

Contact Information

Website: www.sedamit.hr

Phone: +385 1 2353 777

Email: info@sedamit.hr

Address: Sedam IT d.o.o., Koledovčina 2, Zagreb

10. Nivas

Nivas is a Zagreb-based digital agency that designs and builds digital products and experiences for desktop and mobile, combining creative, strategic, and technical expertise.

The firm highlights “high performance solutions for high stake projects,” and its stated technical leadership and long-running studio practice suggest capacity for backend‑intensive, performance-focused work that often aligns with Go-style projects; this is an inference based on the company’s site statements.

Key Highlights

• Founded and active since 2000, styled on the site as “Loving pixels since 2000.”
• Named clients on the site include Microsoft, American Express, and T‑Mobile.
• Participant in the EU-funded project “E-impuls” (reference KK.03.2.1.06) for technological base investment.
• Awards listed on the site include IdejaX 2013 (MIXX Best Online Campaign) and Web Fest 2010 Grand Prix.

Services

• Digital product design
• Web and app development
• Technical consulting

Contact Information

Website: www.nivas.hr

Phone: +385 1 2320 541

Email: info@nivas.hr

Address: Draškovićeva ul. 80, 10000 Zagreb, Croatia

11. Pontis Technology

Pontis Technology is a Croatian software company that builds custom software and AI-enabled solutions for enterprise clients. The firm presents front-end and back-end engineering capabilities and publishes case studies showing platform modernization and product work.

The team has experience modernizing mature platforms and delivering web and mobile products, and this positioning is inferred from their case studies and client testimonials rather than an explicit statement about any specific programming language or runtime.

Key Highlights

• Offices in Zagreb (Savska cesta 144a), Sarajevo (Džemala Bijedića 162), and Düsseldorf (Königsallee 19).
• Publishes 17 case studies that document modernization and product delivery projects.
• Maintains two in-house products named Spika and A-Track.
• Runs Pontis DevCamp, a developer program listed on the company site.

Services

• DevOps
• Backend development
• Cloud & Infrastructure
• QA & Testing

Contact Information

Website: www.pontistechnology.com

Phone: +385 95 3551 762

Email: hello@pontistechnology.com

Address: Savska cesta 144a, Zagreb, Croatia

Address: Džemala Bijedića 162, Sarajevo, Bosnia and Herzegovina

Address: Königsallee 19, Düsseldorf, Germany (pontistechnology.com)

12. Kraken Systems (Kraken)

Kraken Systems is a Zagreb-based engineering company that delivers end-to-end technical projects for businesses, handling planning, migrations, and long-term system operation. They staff dedicated engineering teams and emphasize architecture-led delivery tailored to enterprise needs, which makes them a relevant Croatian partner for backend and infrastructure-focused development work.

The company pairs technical project delivery with ongoing operational support to keep systems running after launch. Their approach to combining project execution and sustained system care aligns with organizations looking for a local team capable of complex system rollouts and maintenance.

Key Highlights

• Lists enterprise clients including Nestle, Ferrero, Unilever, Sanofi, Carrefour, and Forbes on its site.
• Offers Data science & machine learning services staffed by PhD scientists, engineers, and developers.
• Provides System management and 24/7 support for maintaining live systems.
• Publishes a Quality and Information Security Policy and participates in EU Projects.

Services

• Solution and system architecture
• Development and implementation
• Data science & machine learning
• System management and 24/7 support

Contact Information

Website: krakensystems.co

Phone: +385 91 310 5480

E-mail: info@krakensystems.co

Address: Zagrebacka avenija 104d, 10000 Zagreb, Croatia

LinkedIn: linkedin.com/company/kraken-systems

Conclusion

Match each agency to your primary priorities—speed to market, domain expertise, or long-term platform operations. Evaluate project scope, required regulatory or sector experience, and preferred team model (local boutique teams, dedicated external teams, or an international partner).

SoftPro is the featured international partner for this list. Favor providers that publish case studies, support migrations and ongoing operations, or specialize in your sector when those factors are important to project success.