Software Development Engineer (Senior) – Hybrid

As a Senior Software Development Engineer at DOCOsoft, you will play a critical role in designing, building, and evolving high-quality software systems that power solutions for the London and Global Insurance Markets. You will operate with a high degree of autonomy, technical authority, and accountability, contributing not only through hands-on development but also through architectural decision-making, technical leadership, and mentorship.

You will work closely with product owners, architects, and fellow engineers to translate business needs into scalable, resilient, and maintainable systems, while actively raising engineering standards across the team.

Role Description:

This role is for an experienced engineer who owns outcomes, not just tasks. You will be responsible for shaping technical solutions end-to-end from requirements and design through implementation, testing, deployment, and ongoing evolution.

You will be expected to make sound technical decisions, identify and mitigate risk early, challenge assumptions, and contribute to the long-term health of the codebase and platform. You will act as a technical reference point within the team and provide guidance to less experienced engineers.

Responsibilities:

Own the design and implementation of complex features and subsystems, ensuring they meet functional, performance, security, and maintainability requirements.
Drive technical design and architecture discussions, producing clear, pragmatic designs aligned with system and business goals
Take accountability for code quality, system reliability, and operational stability, not just individual contributions
Mentor and support mid-level and junior engineers, providing technical guidance, feedback, and code review leadership
Identify technical debt, scalability issues, and architectural risks, and proactively propose and deliver improvements
Collaborate closely with product owners and stakeholders to clarify requirements, challenge ambiguity, and shape solutions
Lead by example in engineering best practices, including testing strategies, CI/CD usage, documentation, and secure coding
Contribute to estimation, planning, and prioritisation, bringing realism and technical insight to delivery commitments
Participate in production support and incident resolution, driving root-cause analysis and long-term fixes
Influence and improve development processes within an agile/scrum environment

Skills and Qualifications

5+ years of professional software development experience, including delivery of production systems at scale
Proven experience owning features or systems from design through production

Core Technical Skills

Strong expertise in C# and .NET Core
Deep experience with ASP.NET MVC / Web APIs
Strong command of SQL Server and T-SQL, including performance considerations
Advanced usage of Git, including branching strategies and code review workflows

Engineering Practices

Solid understanding and practical application of software architecture principles, design patterns, and SOLID
Hands-on experience with test-driven development and layered testing strategies
Strong experience with:
- Unit testing (xUnit, NUnit)
- Mocking frameworks (Moq or equivalent)
- Integration and E2E testing (e.g., Playwright)
Experience designing and consuming RESTful APIs with OpenAPI (Swagger)

Architecture & Platforms

Strong understanding of authentication and authorization (OAuth2, OpenID Connect; SAML knowledge a plus)
Familiarity with cloud-native patterns, resilience, and scalability concerns

Nice to Have

Frontend experience with React, Angular, or Vue.js
Experience with Docker and container-based deployments
Practical involvement in CI/CD pipeline design and optimisation
Experience with caching strategies (e.g., Redis)
Exposure to OData, UML, or architectural documentation
Previous experience influencing or defining technical standards
Agile certifications (CSM / PSM)

What Success Looks Like in This Role

After 6–12 months, a successful Senior Engineer at DOCOsoft:

Delivers Through Ownership

Independently owns complex features or subsystems from design through production and support
Translates ambiguous business requirements into clear, pragmatic technical solutions
Delivers work predictably, with minimal rework or late-stage surprises

Improves System Quality and Stability

Leaves the codebase measurably easier to maintain and extend than they found it
Proactively identifies and addresses technical debt, performance issues, and reliability risks
Reduces recurring defects and contributes to more stable production releases

Raises Engineering Standards

Sets a visible example in code quality, testing discipline, and documentation
Provides high-quality code reviews that improve design and maintainability, not just syntax
Influences team practices around testing, CI/CD, and development workflows

Multiplies Team Effectiveness

Acts as a technical reference point for less experienced engineers
Coaches mid-level and junior engineers toward greater independence
Unblocks teammates and shares context to keep delivery moving

Demonstrates Sound Technical Judgment

Makes well-reasoned trade-offs between speed, quality, and long-term maintainability
Challenges requirements and designs constructively when risks or gaps are identified
Avoids over-engineering while ensuring solutions are fit for scale and longevity

Owns Outcomes in Production

Takes responsibility for production issues related to their work
Leads or contributes meaningfully to incident investigation and root-cause analysis
Drives permanent fixes rather than temporary workarounds

Earns Trust and Autonomy

Is trusted by peers and leadership to handle high-impact or high-risk work
Requires minimal oversight and uses autonomy responsibly
Is actively sought out for technical input and decision-making

Who we are:

DOCOsoft is a leading software and services provider to Lloyd’s of London and the broader London insurance market. Since our foundation, we have grown to become one of the leading insurance software specialists in the London Insurance Market. We are a growing team of over 95 colleagues based in Dublin, London, Tokyo, Portugal, Spain, India and Poland.

Here’s what we have to offer:

DOCOsoft aspires to be a market leader in the technology sector, and we are always looking for new ways to approach projects or improve existing content. We look to hire people that will help us achieve this with hard work, enthusiasm and an expression of their own ideas.

We offer our people:

The opportunity to impact our growing business- everyone’s contribution matters!
A team environment that is focused on the creation and delivery of great products for our clients.
Exciting challenges to grow and enhance their skills.
A competitive pay and benefits package including;
- 25 days Annual Leave,
- Private pension,
- Bonus scheme,
- Private health,
- Life assurance.

Equal Opportunity Employer:

DOCOsoft is committed to building an inclusive and diverse team that represents a variety of backgrounds, experiences and perspectives. We welcome applications from all suitably qualified candidates, and do not discriminate on the grounds of race, religion, gender, marital or family status, age, disability, sexual orientation, membership of the travelling community or any other basis as protected by applicable law.

Should you require reasonable accommodations during any stage of the recruitment process, please let us know.

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