Senior Software Engineer

Seccl

. Design, build, and operate reliable, scalable, testable, and maintainable software solutions .

Posted 9/30/2026contractRemote • United KingdomSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing, building, and operating scalable software solutions using TypeScript and Node.js, with a strong focus on financial workflow systems and regulated investment operations. Proven ability to mentor engineers and lead technical delivery in a structured on-call and incident management environment.

Highest-signal resume keywords

Node.js DevelopmentTypeScript ProgrammingAmazon Web Services (AWS)Mentoring EngineersFinancial Services Experience

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Node.jsTypeScriptServerless ProductsMongoDBWorkflow APIsDistributed SystemsTestingObservabilityPerformance OptimizationIncident Management

Soft Skills

CollaborationCommunicationContinuous ImprovementMentorshipAccountability

Tools & Technologies

Amazon Web ServicesServerless FrameworkDocument DatabasesCloud ProvidersIncident Management Tools

Industry Keywords

Financial ServicesFinTechRegulated IndustriesMulti-Region SystemsMulti-Currency Systems

Tech Stack

Tools & technologies

AWSAzureCloudDistributed SystemsGoogle Cloud PlatformJavaScriptMongoDBNode.jsTypeScript

About the role

Key responsibilities & impact

Design, build, and operate reliable, scalable, testable, and maintainable software solutions
Build new functionalities and products using TypeScript and Node.js
Support resilient financial workflow systems and regulated investment operations
Own services across the full software lifecycle from design to operation
Collaborate in a domain-aligned, cross-functional squad with engineering, product, customer-facing, and operations colleagues
Design, implement, and operate services within the assigned domain
Be accountable for product SLAs and iterative improvements
Maintain and extend service documentation
Foster continuous improvement and technical excellence
Provide guidance and mentorship to other engineers
Communicate with non-technical colleagues about the Seccl system
Participate in structured on-call and incident management processes

Requirements

What you’ll need

Must be available quickly to join for 6 months
Strong commercial experience with Node.js, specifically TypeScript
Experience with Amazon Web Services
Experience with Serverless products
Experience with document databases, ideally MongoDB
Experience mentoring engineers
Experience leading technical delivery in a build-and-run engineering model
Experience in a structured on-call process and incident management
Experience working in regulated industries, ideally financial services or FinTech
Experience in a strongly/statically typed language
Strong understanding of designing, building, and running high-quality, standards-compliant workflow APIs
Focus on testing, observability, and performance
Experience with a cloud provider such as AWS, Azure, or GCP
Experience with distributed systems and debugging through tracing and observability
Willingness to be on-call for services
UK right to work required before starting
Experience building financial systems with multi-region, multi-currency, or trading-related complexity advantageous

Benefits

Comp & perks

Remote work within the UK
Six-month contract engagement under O/IR35 requirements
Inclusive and accessible interview experience
B Corp-certified company culture focused on purpose and profit
Opportunity to shape the future of investing across the UK and Europe