Mika Koivisto

Mika Koivisto Email and Phone Number

Lead Developer and Architect, PSD2 APIs @ OP Financial Group
Helsinki, FI
Mika Koivisto's Location
Helsinki Metropolitan Area, Finland
Mika Koivisto's Contact Details

Mika Koivisto personal email

n/a
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.

Mika Koivisto's Current Company Details
OP Financial Group

Op Financial Group

View
Lead Developer and Architect, PSD2 APIs
Helsinki, FI
Website:
op.fi
Employees:
10002
Mika Koivisto Work Experience Details
  • Op Financial Group
    Lead Developer And Architect, Psd2 Apis
    Op Financial Group
    Helsinki, Fi
    View
  • Op Financial Group
    Lead Developer / Architect, Psd2 Apis
    Op Financial Group Apr 2017 - Present
    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. This ensured full regulatory compliance and adhered to Open Banking standards, which granted OP the distinction of being the first Nordic bank to receive an exemption from fallback channels.• 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 creating synergies with other team projects.• 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 development overhead.• 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.
    View
  • Op Financial Group
    Lead Developer / Architect, Siirto Payment Apis
    Op Financial Group Sep 2024 - Present
    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.
    View
  • Op Financial Group
    Lead Developer / Architect, Daily Banking Service Plans
    Op Financial Group Dec 2023 - Present
    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.
    View
  • Op Financial Group
    Lead Developer / Architect, Govapi
    Op Financial Group Apr 2020 - Present
    Helsinki, Uusimaa, Finland
    • Provided architectural guidance and conducted code reviews, ensuring the project aligns with OP’s architectural guidelines and requirements.
    View
  • Koivisto Capital Oy
    Freelance Consultant
    Koivisto Capital Oy Jan 2017 - Present
    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
  • Liferay, Inc.
    Core Platform Engineer
    Liferay, Inc. Nov 2010 - Dec 2016
    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
    View
  • Liferay, Gmbh
    Senior Consultant
    Liferay, Gmbh Apr 2009 - Nov 2010
    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
    View
  • Logica
    Senior Technical Architect
    Logica Dec 2001 - Mar 2009
    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• Designed integrations using IBM Message Broker, JMS and Web services• Setup and maintained continuous integration environmentSoftware Architect Jan 2006 – Oct 2006• Lead Architect in a IBM WebSphere Portal implementation for M-real• Lead Developer in a IBM WebSphre Portal implementation for FinnairSoftware Designer Nov 2001 – Dec 2005• Developed Portals with Fatwire and Bea Portal for Senate Properties and Finnish Justice Department• Lead development of IBM Websphere Portal and IBM Workplace Web Content Management for M-real• Developer in a Bea Weblogic and Sybase based client-server application using EJBs for Finnish Customs
    View
  • Spray Network Oy (Lycos Europe)
    Lead Developer
    Spray Network Oy (Lycos Europe) Nov 1999 - Dec 2001
    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
  • Western Washington University / Academic Technology & User Services
    Web Technician [Computer Assistant Iv]
    Western Washington University / Academic Technology & User Services Oct 1997 - Oct 1998
    Bellingham, Wa, Usa
    • Assisted university webmaster with maintenance and development of university website• Developed several Perl/CGI based web applications
    View

Mika Koivisto Skills

Spring Java Enterprise Edition Liferay Maven Web Services Java Portals Hibernate Agile Methodologies Soa Software Development Open Source Scrum Tomcat Spring Framework Software Engineering Portlet Development Perl Xml Sun Certified Java Programmer Jsp Architecture Test Driven Development Integration Jcr Saml 2.0 Ant Architectures Servlets Jsr 168 Jsr 286 Websphere Portal Cmis Cms Tdd Documentum Terracotta Sharepoint Security Software Architectural Design Aop Aspectj Service Oriented Architecture Design Saml Alfresco Osgi Linux Xen Virtualization Microservices

Mika Koivisto Education Details

Frequently Asked Questions about Mika Koivisto

What company does Mika Koivisto work for?

Mika Koivisto works for Op Financial Group

What is Mika Koivisto's role at the current company?

Mika Koivisto's current role is Lead Developer and Architect, PSD2 APIs.

What is Mika Koivisto's email address?

Mika Koivisto's email address is mi****@****ray.com

What schools did Mika Koivisto attend?

Mika Koivisto attended Metropolia Ammattikorkeakoulu, Western Washington University.

What are some of Mika Koivisto's interests?

Mika Koivisto has interest in Liferay Portal, Sso, Saml, Agile Software Development, Security, Scrum, Tdd.

What skills is Mika Koivisto known for?

Mika Koivisto has skills like Spring, Java Enterprise Edition, Liferay, Maven, Web Services, Java, Portals, Hibernate, Agile Methodologies, Soa, Software Development, Open Source.

Who are Mika Koivisto's colleagues?

Mika Koivisto's colleagues are Tarja Nevalainen, Zina Boba, Kirsi Tiihonen, Inger Övermark, Markku Sedbom, Sini Ritoranta, Rytivaara Seppo.

Not the Mika Koivisto you were looking for?

View similar profiles

Free Chrome Extension

Find emails, phones & company data instantly

Find verified emails from LinkedIn profiles
Get direct phone numbers & mobile contacts
Access company data & employee information
Works directly on LinkedIn - no copy/paste needed
Get Chrome Extension - Free

Aero Online

Your AI prospecting assistant

Download 750 million emails and 100 million phone numbers

Access emails and phone numbers of over 750 million business users. Instantly download verified profiles using 20+ filters, including location, job title, company, function, and industry.