Mika Koivisto
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Mika Koivisto Email & Phone Number

Lead Developer and Architect, PSD2 APIs at OP Financial Group
Location: Helsinki Metropolitan Area, Finland, Finland 11 work roles 2 schools
1 work email found @liferay.com LinkedIn matched
✓ Verified Jun 2026 4 data sources Profile completeness 100%

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Current company
Role
Lead Developer and Architect, PSD2 APIs
Location
Helsinki Metropolitan Area, Finland, Finland
Company size

Who is Mika Koivisto? Overview

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Quick answer

Mika Koivisto is listed as Lead Developer and Architect, PSD2 APIs at OP Financial Group, a company with 10002 employees, based in Helsinki Metropolitan Area, Finland, Finland. AeroLeads shows a work email signal at liferay.com and a matched LinkedIn profile for Mika Koivisto.

Mika Koivisto previously worked as Lead Developer / Architect, PSD2 APIs at Op Financial Group and Lead Developer / Architect, Siirto Payment APIs at Op Financial Group. Mika Koivisto holds Computer Software Engineering from Metropolia Ammattikorkeakoulu.

Company email context

Email format at OP Financial Group

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{first}.{last}@liferay.com
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Profile bio

About Mika Koivisto

I design secure, scalable API integrations that automate processes and improve operational efficiency. Professional SummaryI am a Lead Developer and Hands-On Solution Architect with over 25 years of experience in software development and system integrations, specializing in payments and banking systems for the past 7 years. I have extensive expertise in designing scalable API integrations using technologies such as Vert.x and Java in hybrid cloud environments, with a proven track record of delivering mission-critical solutions that meet stringent regulatory requirements and security standards.Key Skills:• Payments and Fintech: Expertise in PSD2, Open Banking, and regulatory compliance for secure financial systems.• Architecting Scalable Systems: Expert in Vert.x, Java, and AWS for building high-performance, cloud-native applications.• DevOps and Automation: Hands-on experience with CI/CD, automation tools, and cloud environments.• Agile Leadership: Skilled in leading teams and implementing agile methodologies, including Scrum, Kanban, and TDD.• API Security and Integration: Specialized in secure API design using OAuth 2.0, JWT, OpenID Connect, mutual-TLS with eIDAS certificates.Competence• Architectural patterns: Microservices, Serverless, Event-Driven Architecture, SOA, REST, n-Tier architectures• Programming languages: Java, JavaScript/Node.js, Ruby, Python•Frameworks: Vert.x, Spring Boot, OSGi • Cloud and DevOps: AWS, Jenkins, Ansible, Docker•.Middleware: Apache Kafka, RabbitMQ (MQTT), ActiveMQ, ServiceMix • API Security: OAuth 2.0, JWT, OpenID Connect, SAML, AWS API Gateway, Apigee, TLS/SSL, Financial API (FAPI), PKI• Databases: MySQL/MariaDB, PostgreSQL, DynamoDB, DB2, Oracle• Monitoring: Dynatrace, DataDog, Nagios, New Relic, JMX, SNMP, Grafana, Prometheus, OpenTelemetry• Agile Practices: Scrum, Kanban, XP, TDD, CI/CD• Test automation: Cucumber, RestAssured, TestContainers, Junit, Robot Framework, JMeter, SonarQube, WireMock• Home automation: MQTT, Home AssistantCheck out my business website https://jguru.fi for services I offer and feel free to contact me at mika@jguru.fi to schedule a call.

Listed skills include Spring, Java Enterprise Edition, Liferay, Maven, and 46 others.

Current workplace

Mika Koivisto's current company

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OP Financial Group
Op Financial Group
Lead Developer and Architect, PSD2 APIs
Helsinki, FI
Website
Employees
10002
AeroLeads page
11 roles

Mika Koivisto work experience

A career timeline built from the work history available for this profile.

Lead Developer / Architect, Psd2 Apis

Current

Helsinki, Uusimaa, Finland

  • Collaborated with stakeholders, including enterprise architects, security architects, cloud architects, and lawyers, to design and architect the PSD2-compliant payment, account information, and funds confirmation APIs..
  • Re-engineered the APIs using Vert.x as requirements evolved, transitioning from a mixed technology stack to a standardized one. This resulted in improved performance, scalability, and maintainability, while also.
  • Took ownership of and consolidated the authorization solutions for web, mobile, and sandbox environments, previously maintained by different teams, into a single unified solution, simplifying maintenance and reducing.
  • Co-authored the first JWT-based security token for internal API usage, providing a stateless alternative to the existing SAML 2.0 and session-based token systems, facilitating hybrid cloud development.
  • Represented OP in Open Banking Europe technical and functional working groups, contributing to the definition of the OBE directory service.
  • Maintained and operated the production environment, optimizing the solution to be managed by a two-person team, streamlining operations and enabling deployments at any time.
Apr 2017 - Present

Lead Developer / Architect, Siirto Payment Apis

Current

Helsinki, Uusimaa, Finland

  • Technical lead on the existing solution, which requires a complete technical overhaul to align with OP’s architectural standards and meet new regulatory requirements.
Sep 2024 - Present

Lead Developer / Architect, Daily Banking Service Plans

Current

Helsinki, Uusimaa, Finland

  • Took over as the technical lead on the project, providing team guidance and conducting code reviews to ensure alignment with OP’s architectural standards.
Dec 2023 - Present

Lead Developer / Architect, Govapi

Current

Helsinki, Uusimaa, Finland

  • Provided architectural guidance and conducted code reviews, ensuring the project aligns with OP’s architectural guidelines and requirements.
Apr 2020 - Present

Freelance Consultant

Current
Koivisto Capital Oy

Kauniainen, Finland

  • Select contract assignments:
  • CA Technologies (USA): Implementation of encrypted token support to Liferay SAML 2.0 provider. Worked with teams in USA and India to integrate the solution to CAs own product.
  • Mondi Group (Austria): Performed performance analysis for a Liferay platform to identify and provide a report with actionable suggestions to fix the issues.
  • OP Financial Group (Finland): Ongoing details above
Jan 2017 - Present

Core Platform Engineer

Greater Los Angeles Area

  • Report directly to Chief Software Architect and VP of Engineering
  • Integration specialist handling Liferay document connectors for Documentum, SharePoint, Nuxeo, Alfresco and many other CMIS document repositories
  • Lead designer and developer for Liferay SAML 2.0 Identity Provider and Service Provider support
  • Expert on third party integrations for SSO such as SAML, SiteMinder and Facebook
Nov 2010 - Dec 2016

Senior Consultant

Frankfurt Am Main Area, Germany

  • Held public and private trainings on following topics: Portal Administration, System Administration and Development
  • Provided clients architecture consulting, auditing and solution validation
  • Held technical workshops and provided technical pre-sales support
  • Provided clients performance tuning and production installations
  • Developed integrations using technologies such as SAML and Terracotta DSO
  • Worked with many Fortune Global 500 companies such as Robert Bosch, Vodafone, Barclays and IBM
Apr 2009 - Nov 2010

Senior Technical Architect

Helsinki, Finland

  • Lead Software Architect Nov 2006 – Mar 2009
  • Technical coordination of architects in several concurrent projects in a named account
  • Provided technical pre-sales support and evaluated technical aspects of RFPs
  • Held architecture and code reviews on regular basis
  • Held developer trainings and mentoring
  • Architected solutions using Liferay Portal and Microsoft Office SharePoint Server
Dec 2001 - Mar 2009

Lead Developer

Spray Network Oy (Lycos Europe)

Helsinki, Finland

  • Lead the design and migration of Perl based platform to Enterprise Java platform
  • Designed and developed an email system for 300k active users
  • Designed a mobile content and SMS application platform
  • Designed and developed integrations for eCommerce payment processing
Nov 1999 - Dec 2001
Team & coworkers

Colleagues at OP Financial Group

Other employees you can reach at op.fi. View company contacts for 10002 employees →

2 education records

Mika Koivisto education

FAQ

Frequently asked questions about Mika Koivisto

Quick answers generated from the profile data available on this page.

What company does Mika Koivisto work for?

Mika Koivisto works for OP Financial Group.

What is Mika Koivisto's role at OP Financial Group?

Mika Koivisto is listed as Lead Developer and Architect, PSD2 APIs at OP Financial Group.

What is Mika Koivisto's email address?

AeroLeads has found 1 work email signal at @liferay.com for Mika Koivisto at OP Financial Group.

Where is Mika Koivisto based?

Mika Koivisto is based in Helsinki Metropolitan Area, Finland, Finland while working with OP Financial Group.

What companies has Mika Koivisto worked for?

Mika Koivisto has worked for Op Financial Group, Koivisto Capital Oy, Liferay, Inc., Liferay, Gmbh, and Logica.

Who are Mika Koivisto's colleagues at OP Financial Group?

Mika Koivisto's colleagues at OP Financial Group include Erkki Sarsa, Ville Satka, Juho Pankka, Marko Nykänen, and Mette Perälä.

How can I contact Mika Koivisto?

You can use AeroLeads to view verified contact signals for Mika Koivisto at OP Financial Group, including work email, phone, and LinkedIn data when available.

What schools did Mika Koivisto attend?

Mika Koivisto holds Computer Software Engineering from Metropolia Ammattikorkeakoulu.

What skills is Mika Koivisto known for?

Mika Koivisto is listed with skills including Spring, Java Enterprise Edition, Liferay, Maven, Web Services, Java, Portals, and Hibernate.

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