Assignment description
You will be the lead mainframe developer for a new team working on high‑volume, business‑critical payment products (e.g. Swish in Sweden and similar services in Norway).

You will:
– Take technical ownership of mainframe development within your area
– Work hands‑on with COBOL to design, implement, and maintain new functionality (not only legacy maintenance)
– Translate business requirements into robust, scalable mainframe solutions
– Drive tasks from definition to delivery with minimal supervision
– Collaborate closely with sister teams in Sweden and Poland

This is a full‑time consulting assignment starting as soon as possible, with an initial term of 6 months and strong likelihood of extension.

About the team
You will be the first hire in a newly created team, which will be built around you as the technical lead.

The team will:
– Work closely with existing “sister” mainframe and payments teams that currently handle this domain
– Collaborate with a dedicated mainframe‑experienced project manager/scrum master and separate QA/testing teams
– Operate in an agile way (bank’s own variant of Scrum suited to mainframe work)
– The engineering organization is large and mature, with many mainframe and payments engineers already in place; this is a strategic expansion of that capability.

Must haves
– 7+ years of hands‑on mainframe development, with strong COBOL expertise
– Proven experience delivering in IBM z/OS environments
– Ability to lead technically: set direction, make architectural and design suggestions, and mentor others
– Strong, proactive consulting mindset: you seek information, talk to stakeholders, and drive work forward instead of waiting for instructions
– Very good communication skills in English (spoken and written)
– Ability and willingness to work on‑site in the Gdynia/Gdańsk area at least 3 days per week
– EU citizenship (required due to internal security and data‑protection standards at the bank)

Other requirements
– Comfortable working in a large enterprise/banking environment
– Able to work standard “Swedish office hours” (approximately 08:00–17:00 CET) with some flexibility
– Open to iterative/agile ways of working alongside teams that still have some waterfall‑like elements, as is common in mainframe contexts
– Strong sense of ownership and quality; you can work independently but also know when to involve others

About the customer
Our customer is a consultancy broker that has a major Nordic bank with a large engineering organization and a very strong presence in digital payments. They operate market‑defining payment solutions used by the vast majority of consumers in Sweden and Norway, processing high volumes of transactions every day.

The bank:
Runs a hybrid on‑premise/mainframe and cloud setup, with mainframe at the core of its payments stack
Is building a new team in the Gdynia/Gdańsk area to strengthen and scale its mainframe‑based payments platforms
Offers a modern, international environment with close collaboration between Sweden and Poland, and quick, pragmatic hiring decisions (typically 1–2 interviews, fast feedback)

Industries
Banking and Finance