Senior Full Stack Engineer
Primary stack
Job description
About the Position
Senior Full Stack Engineer
MWDN is a global IT outstaffing company with 23+ years of experience that connects exceptional tech talent with leading companies across Israel, the USA, Great Britain, and Western Europe. We offer opportunities to work on international products in a stable and professional environment.
Responsibilities
You will design and ship production-grade systems that combine software engineering, data infrastructure, and AI, including:
- Building secure, scalable full-stack product features
- Designing data models, APIs, integrations, and backend architecture
- Creating reliable data pipelines with strong validation and observability
- Shipping high value high trust AI/LLM-powered features
- Building safe agentic workflows with scoped tools, permissions, logging, evals, and failure handling
- Debugging issues across ingestion, transformation, database, API, UI, and AI context
- Designing systems with security, privacy, auditability, and observability
Requirements
- 8+ years building production software
- Strong experience with TypeScript, React, SQL
- Deep backend architecture, API, data modeling, and production debugging skills
- Significant experience with data pipelines, integrations, or data-heavy systems
- Experience building systems that handle sensitive, regulated, and high trust data
- Production experience shipping robust AI/LLM-powered features
- Strong understanding of evals, hallucinations, malformed outputs, retrieval quality, latency, cost, model drift, and provider risk
- Good judgment about when to use an LLM, when to use retrieval, when to improve the data foundation, and when deterministic code is the better answer
- Excellent written and verbal communication in English
- High ownership
Nice to Have
- Built sturdy data pipelines customer facing products rely on
- Care about data correctness before AI or dashboards depend on it
- Can trace a bad number across ingestion, transformation, database, API, UI, and AI context
- Think naturally in failure modes: stale data, duplicate events, schema drift, partial writes, bad joins, expired tokens, provider outages, and malformed model outputs
- Worked in high trust data environments such as finance, investment, legal, healthcare, or enterprise SaaS
- Experience with Supabase, Postgres RLS, Deno, Modal, embeddings, vector search, transcription, GPU workloads, or similar infrastructure
- Worked with data validation, reconciliation, lineage, observability, or audit systems
- Experience with AI evals, AI observability, agent testing, or red-teaming AI systems
We Offer
- People-first management with minimal bureaucracy
- A friendly company culture, proven by employees who choose to return
- Flexible working hours
- 29 days of PTO (18 working days per year plus all national holidays)
- 10 paid recovery days
- Full financial and legal support for independent contractors
- Free English classes, with native speakers or Ukrainian teachers
- Dedicated HR support
About the Company
MWDN is a global IT outstaffing company with 23+ years of experience that connects exceptional tech talent with leading companies across Israel, the USA, Great Britain, and Western Europe. We offer opportunities to work on international products in a stable and professional environment.
Why Choose Us?
- Security: We carefully vet our clients to minimize risks and ensure reliability and timely payments - no fraud or unpleasant surprises.
- Career support: If a project isn’t the right fit, we support you and actively help find new opportunities that match your skills and career goals.
- Legal assistance: We provide guidance on legal matters, including opening and managing your independent contractor or sole proprietorship status, taxes, and related processes.
- Professional development: We offer English courses and professional growth opportunities, as well as team-building events.
MWDN is ranked among the top 5 IT employers in our region according to DOU. We take pride in our transparency and strong commitment to our team. Curious to learn more? See what our employees say about working with us on DOU.
Our Next Steps
- Intro call with a Recruiter
- Intro with the client
- Test Task
- Final client interview
- Offer
Maksym Martyniuk・Recruiter
- LinkedIn: Maksym Martyniuk
- Email: [email protected]
- Phone: +38 068 99 49 726
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© MWDN. This job description was sourced from the employer's public career page. TheJob is not the employer — we index the posting and route candidates to the source. All content rights and hiring decisions belong to the employer.
MWDN Ltd. was created in 2002 as a software development house for healthcare vendor and later expanded its business to build team extensions and RnDcenters for startups and enterprise companies of different profiles that require experts and professionals to help with building innovative products. Currently, MWDN is a team of unique technical talents, which consists of more than 160 professionals from different cities of Ukraine and abroad. Our specialists have worked with clients from the US, Europe, Israel, and have developed 200+ web, mobile, and healthcare products. We offer outstaffing and outsourcing services by creating dedicated teams of developers and by extending our clients staff. We make sure that our customers remote specialists are willing to work according to the company's principles. By choosing this approach, we guarantee that our dedicated experts feel connected to the clients company and are 100% committed to its success.