Solaris is Europe's leading embedded finance platform. Solaris’ full German banking license and proprietary modular B2B tech stack empowers its partners – from SMEs to large, multinational, non-financial companies – to offer compliant, customer-centric banking services, providing seamless experiences to customers across all industries. Founded in 2016, Solaris pioneered the Banking-as-a-Service market with an unparalleled combination of tech and banking. Solaris is headquartered in Berlin and employs 300 people in Europe.

The Treasury Back Office team operates as the administrative and operational foundation of the treasury department, ensuring that trades executed by the front office are settled, recorded, and audited accurately. In your role, you will support managing the post-trade administrative lifecycle to ensure seamless transaction settlement and strict adherence to financial controls.

Your Role

• Transaction Settlement: execute, match, and confirm all treasury deals, including foreign exchange (FX), money market transactions, and derivatives.
• Payment Processing: manage treasury-related payments and maintain Standard 
• Settlement Instructions (SSI) to ensure funds are transferred securely and on time.
• Account Reconciliation: Perform daily bank statement reconciliations with internal records to resolve any discrepancies or "open items".
• Static Data Management: Maintain critical master data within the Treasury Management System (TMS).
• Audit Support: Maintain a comprehensive audit trail and provide documentation for internal and external auditors during reviews.

We'd love to see 

Depending on your level of experience, your responsibilities and scope of role will range. We don’t care much about fancy titles, but rather about real personal and professional development, as laid out in our learning framework. Let’s figure together out how you can contribute to our team.

• Currently a student in Finance, Accounting, Economics or similar
• First training or practical experience in treasury operations, corporate finance, or banking is a plus.
• High affinity for numbers, banking and IT-related technical topics
• Proficiency in MS Excel
• Ability to work in a team atmosphere
• Independent working style, very accurate and fast comprehension and high commitment
• You have excellent German and English language skills – both written and spoken.

Benefits 

• Transparent framework to support your career goals
• Lunch reimbursement
• Mental health support via Thrive
• Flexible working model   

While job ads usually paint an ideal picture of a candidate, studies show that most applicants meet an average of 60% of the criteria. Unfortunately, many promising candidates tend to apply only if they meet all the criteria. So if you think you have what it takes, but don't necessarily meet every single item in the job description, please contact us anyway. We'd love to talk with you and find out if you might be a good fit for us.

At Solaris, we are committed to nurturing an inclusive environment, where all Solarians feel valued, respected and supported. We are dedicated to building a diverse workforce that reflects the diversity of our communities. We are committed to equal employment opportunity regardless of color, ethnicity, religion, sex, origin, disability, marital status, citizenship, or gender identity. We are proud to be an equal opportunity workplace. If you have a disability or special need that requires accommodation, please let us know.

If your application is successful, you will be required to complete pre-employment background checks through our screening provider Zinc. These include, but not limited to identity verification, educational records, references, a criminal record check, etc. The processing is based on Art. 6(1)(c) GDPR. Please see below Privacy Information for Job Applicants for details, including recipients, retention, and your rights.

Information on data processing:

DE: https://www.solarisgroup.com/gdpr_notice_de
EN: https://www.solarisgroup.com/gdpr_notice_en

As a Staff Solutions Architect at Upbound, you own the technical success of our customers. You are the primary driver of customer outcomes, from initial implementation through production adoption, ensuring customers achieve real business value with Crossplane and the Upbound platform. This is a deeply technical, hands-on role embedded in the post-sales motion, working closely with customers to deliver working solutions, not just guidance.

In this role, you will Own: 

Customer Technical Outcomes

• Drive end-to-end technical success for a portfolio of enterprise customers, from post-sales handoff through production adoption.
• Own the implementation of known Upbound use cases — control plane architectures, Upbound/Crossplane configurations, GitOps integration, platform engineering patterns — and ensure customers reach their target state.
• Define and track technical milestones that map to customer business objectives and contract value.
• Act as the primary technical escalation point when customers face blockers, coordinating engineering and product resources to resolve them.

Implementation & Architecture

• Lead technical discovery to deeply understand customer environments, platform requirements, and target architecture.
• Design and deliver Crossplane-based control plane architectures tailored to customer infrastructure and organizational context.
• Build and maintain reference platforms and implementation accelerators that codify Upbound best practices and reduce time-to-value for common use cases.
• Contribute Statements of Work that accurately scope implementation engagements.
• Write code, fix bugs, and build scoped features within Upbound products, provider ecosystem, and Crossplane core where needed to unblock customers.

Technical Voice of the Customer

• Represent customer technical needs internally to influence product roadmap and prioritization.
• Partner with pre-sales SEs to ensure smooth, informed handoffs with full context on customer environment and expectations.
• Identify expansion opportunities as customer technical maturity grows and new Upbound capabilities become relevant.

You are a good fit if you have: 

• Hands-on Kubernetes expertise — operators, controllers, or add-ons; production deployment and management experience.
• Platform engineering or SRE background, with direct experience building or operating an Internal Developer Platform (IDP).
• Deep familiarity with cloud-native tooling: CNCF ecosystem, IaC (Terraform/Pulumi), GitOps (Flux/ArgoCD), CI/CD pipelines.
• Experience across at least two major cloud providers (AWS, GCP, Azure) at production scale.
• Strong programming skills; Go is strongly preferred.
• Proven track record of leading customers through complex technical implementations to successful, measurable outcomes.
• Excellent communication skills — comfortable presenting architecture and trade-offs to both engineering teams and executive stakeholders.
• Able to manage multiple customer engagements simultaneously in a fast-moving startup environment.

It is a plus if: 

• Crossplane power user — contributions to core or the provider ecosystem are very appreciated [for many reasons]
• Active Kubernetes community involvement: contributions, conference talks, technical writing, or open source maintainership.
• CKA or CKAD certification.
• Prior startup, familiarity with coding agents and distributed team experience.

 #LI-REMOTE